Team GPR

[crazy man]

Me and bert will keep you up to date here with are projects
here is my bike i'v started . pic's of the swing arm build coming 264532gpr 100 twin/tf100

[Yow Ling]

Looking forward to this thread developing. Beats tv hands down

[sidwyz]

Nice, keep the pics coming!!

You will have to jig it up and run a production line :clap:

[Bert]

Nice, keep the pics coming!!

You will have to jig it up and run a production line :clap:

All in hand.

And a few conversation starters.

[Yow Ling]

How many of those drums did you make?

[crazy man]

How many of those drums did you make?just the one .started of at 500 kg's for a dyno

[sidwyz]

Thats way cool!!!

So what front end have the steering heads been designed to take?

[TZ350]

This is great, I was seriously impressed by those Crazyman frames I saw at Taupo, and to be looking at making a dyno too, thats very ..... impressive :not:

[codgyoleracer]

just the one .started of at 500 kg's for a dyno


Suprised you got if off your lawn................

[crazy man]

264568dame this slow computer

[crazy man]

Suprised you got if off your lawn................it was a worry ! sat in the shed for awhile

[crazy man]

Thats way cool!!!

So what front end have the steering heads been designed to take?they take inserts so can fit all sorts but up to now had rs125 front ends

[codgyoleracer]

they take inserts so can fit all sorts but up to now had rs125 front ends

So the Britten carbon fibre leading arm didnt work ?

[Brian d marge]

New Zealand has definate talent!!

Well done

Stephen

[chrisc]

All in hand.

And a few conversation starters.

Watching in interest! Can you speak a bit more about the process. Are there more photos of how you jigged it up/held everything in place to weld etc. Nice work guys!

[crazy man]

thanks guys for your nice comments. l have some more pic's l will put up later

[Bert]

WE (I mean you Crazyman) need to add some more history to this thread.

TBA
Members of Team GPR.
The Old days old bikes and fun and games.
Foray into frame building.
The birth of the RSV4-f3 and the GPR frame concept.
Team GPR 2012.
The Dyno.
GPR future Projects.

[crazy man]

264602ok around 4 years ago was the first frame built for the (codgyoleracer ) Glen Williams . the aim was to lose weight and twick the odd thing. the frame ended up at around half the weight of the standard frame .thanks to glen getting me into this frame building!

[crazy man]

264689264690new swing arm . around 30hours of work for the first one just needs a good polish up. made it look like a 2000 honda rsv990 moto gp bike

[crazy man]

264694here is the gpr rsv400 . useing a nc30 motor it was somthing l just wanted to do to be diffent from the rest of the f3 feild. weight is 105 kg/s. built for my bro

[Bert]

Love the GPR-RSV400 (makes me smile every time I see it).:niceone::drool:
can't wait to see the fuel injection kit running. :2thumbsup


And here's another GPR project (based on TZR250).
just needs pipes.


A rather busy little workshop.

[richban]

264689264690new swing arm . around 30hours of work for the first one just needs a good polish up. made it look like a 2000 honda rsv990 moto gp bike

Rocken roll. love your work.

So how do you get on the team:rolleyes:

Sign me up. I will send you my address details for the frame and swing arm.

[Yow Ling]

Rocken roll. love your work.

So how do you get on the team:rolleyes:

Sign me up. I will send you my address details for the frame and swing arm.

Good choice, that will raise the stakes in the Buckets arms race !!

[Brian d marge]

Now we are cooking with gas

Said it once I say it a million time , there is some talent and THIS should be the entry level of racing , starting to look Good

Imagine the red bull rookies , but on buckets all hand made ( no need to change the rules ) ...that would be world class ,,,,,


Hmmmmmm

Stephen

[worm13]

264689264690new swing arm . around 30hours of work for the first one just needs a good polish up. made it look like a 2000 honda rsv990 moto gp bike

your too cool!!!..... oh wait when did the change happen?? awesome work man!!

[crazy man]

Rocken roll. love your work.

So how do you get on the team:rolleyes:

Sign me up. I will send you my address details for the frame and swing arm.you got money ching ching:yes:

[richban]

264748264749264745
you got money ching ching:yes:

I'll get back to you after 8:00pm

I have been a little inspired to bust out the CAD and design up a little bucket swing arm. Will send it through for inspection when its done.

Was thinking a simple version of the FTR swing arm.

[crazy man]

I'll get back to you after 8:00pm

I have been a little inspired to bust out the CAD and design up a little bucket swing arm. Will send it through for inspection when its done.look ford to seeing it

[speedpro]

I'm holden on to my chair waiting to see it as well

[Moooools]

264748264749264745

I'll get back to you after 8:00pm

I have been a little inspired to bust out the CAD and design up a little bucket swing arm. Will send it through for inspection when its done.

Was thinking a simple version of the FTR swing arm.

I want to see this.

Someone suggested using hyper works optistruct to design a frame.

http://www.altairhyperworks.com/?AspxAutoDetectCookieSupport=1

It essentially allows you to import a block of material and apply maximum loads, and then it will optimise the mass of the material against stiffness.
Carbon flat-plate bucket anyone? Kind of using carbon the wrong way I know but easy to manufacture.

Or use it to optimise a set of spun Al wheel halves. Kind of like the old astrolites, but actually light. Probably cheaper than buying RS wheels these days (Should be about 600 to do one set, or less if you did 2 or 3 sets). Do the post machining and make the hub yourself on the mill.

Bring on summer holidays and access to a proper workshop!

[richban]

I want to see this.

Someone suggested using hyper works optistruct to design a frame.

http://www.altairhyperworks.com/?AspxAutoDetectCookieSupport=1

It essentially allows you to import a block of material and apply maximum loads, and then it will optimise the mass of the material against stiffness.
Carbon flat-plate bucket anyone? Kind of using carbon the wrong way I know but easy to manufacture.

Or use it to optimise a set of spun Al wheel halves. Kind of like the old astrolites, but actually light. Probably cheaper than buying RS wheels these days (Should be about 600 to do one set, or less if you did 2 or 3 sets). Do the post machining and make the hub yourself on the mill.

Bring on summer holidays and access to a proper workshop!


Yeah well don't get to excited. I will be going for looks cool and might work.

[Brian d marge]

I use Calculix, free FEA and quite good ... u can get it free CAElinux


I use it for everything from clips to footpegs , then u can optimise the loads , again a free web site ....Daktoa ( sp)


Stephen

[Moooools]

Yeah well don't get to excited. I will be going for looks cool and might work.

Meh don't even worry about the might work bit. Just stick with looks good.

[Moooools]

I use Calculix, free FEA and quite good ... u can get it free CAElinux


I use it for everything from clips to footpegs , then u can optimise the loads , again a free web site ....Daktoa ( sp)


Stephen

Never heard of that.

I use PTC Creo parametric. Just because I have free access to it.
Also have free access to hyperworks through FSAE.

And by free I mean I pay Uni an extortionate sum of money and get that thrown in as a bonus.

[richban]

Basic 2D look. Lots more thinking to do but have run out of Beer.

264761

[Moooools]

Basic 2D look. Lots more thinking to do but have run out of Beer.

264761

Looks like a swing arm.
What is the width as it gets towards the axle blocks? Looks quite skinny.

Material? Ali sheet?

[fi5hy]

I'm holden on to my chair waiting to see it as well

boom boo:killingmem..........

[richban]

Looks like a swing arm.
What is the width as it gets towards the axle blocks? Looks quite skinny.

Material? Ali sheet?

15mm yes very skinny. Yes Ali 2mm sheet. Strong bits still Ali sheet with external over layed ali gussets. really only a visual. I will work on:yawn: more detail later. If I don't loose interest.

[Brian d marge]

Never heard of that.

I use PTC Creo parametric. Just because I have free access to it.
Also have free access to hyperworks through FSAE.

And by free I mean I pay Uni an extortionate sum of money and get that thrown in as a bonus.

It runs better under windows due to a company called bconvergence but here is the Linux link


http://www.caelinux.com/CMS/

not as nice as say solid works , but free, works well and for me open source

I export from Varicad in STEP/stl , netgen or GSHM to mesh then export as an Abquas file then open as Calculix

Then I use a free service ( sometimes )

http://www.onlinefeasolver.com/demo.php or http://dakota.sandia.gov/software.html

to get optimization

then back to varicad to redesign


then I send drawings to Engineers , and they tell me what A twat I am ...or I stuff up a dimension


Stephen

[Yow Ling]

It runs better under windows due to a company called bconvergence but here is the Linux link


http://www.caelinux.com/CMS/

not as nice as say solid works , but free, works well and for me open source

I export from Varicad in STEP/stl , netgen or GSHM to mesh then export as an Abquas file then open as Calculix

Then I use a free service ( sometimes )

http://www.onlinefeasolver.com/demo.php or http://dakota.sandia.gov/software.html

to get optimization

then back to varicad to redesign


then I send drawings to Engineers , and they tell me what A twat I am ...or I stuff up a dimension


Stephen

And that is the very reason I hate mixing computers with metalwork

[Brian d marge]

And that is the very reason I hate mixing computers with metalwork

you dont like metalwork?

Stephen

[crazy man]

Basic 2D look. Lots more thinking to do but have run out of Beer.

264761think l can make a lot better job of my next one with a lot lease weld

[crazy man]

264782the gpr400 with fairing of

[crazy man]

the start of machineing the dyno roller:mellow:264784

[Yow Ling]

264782the gpr400 with fairing of

NZ must be starting to run low on RS125 NX4 swingarms, in 5 or 10 years they will be blaming GPR for wrecking all the old GP bikes

[crazy man]

NZ must be starting to run low on RS125 NX4 swingarms, in 5 or 10 years they will be blaming GPR for wrecking all the old GP bikesthat one went through 2 frames that brock in half lol the first which l welded back together. its going back in hense the reason for making new swing arms l hate wreaking rs125

[husaberg]

FTR Moto Gp how they do it.

I will link it to crazy's thread or just post it there as well

[CM2005]

awesome Scott!! How are you and ya bro? these frames look great dude - i'm sure a "bucket" load of different swingarms etc could fit i.e fzr250 rear end. very very nice, im sure they'll be popular

[crazy man]

awesome Scott!! How are you and ya bro? these frames look great dude - i'm sure a "bucket" load of different swingarms etc could fit i.e fzr250 rear end. very very nice, im sure they'll be popularwe are all good ! l'm injoying going back to buckets instead of the fast bikes (to fast now days for me) did you race yesterday?

[Bert]

Another bit to puzzle:

264891

[speedpro]

MegaSquirt

[husaberg]

MegaSquirt


Microsquirt?

[Bert]

SpeedPro won. chocolate fish next time I see you mike. :msn-wink:

No; while its for a GPR its not one of the buckets.

[crazy man]

264955a nice prezzy from bert for my new bike.. finshed welding it up today. dont know if a should go with the tf/rgv or the tf/rgv with a short stroke to keep the 125 size cyclinder or the more stocker tf type engine water cooled? before the twin goes in it

[koba]

264955a nice prezzy from bert for my new bike.. finshed welding it up today. dont know if a should go with the tf/rgv or the tf/rgv with a short stroke to keep the 125 size cyclinder or the more stocker tf type engine water cooled? before the twin goes in it

If it's just temporary I'd go with the easiest option. No point in going silly on something that's 'just for now'.

[crazy man]

If it's just temporary I'd go with the easiest option. No point in going silly on something that's 'just for now'.don't realy know what will be the best. l like reliably . prombly the big reed ported tf100 . never did port it much at the time so l could play around with it later down the track. l need bert to work out the port timing and chamber for me

[crazy man]

265008starting to come together now but still alot of work to go

[carburator]

Me and bert will keep you up to date here with are projects
here is my bike i'v started . pic's of the swing arm build coming 264532gpr 100 twin/tf100

That my man is pure porn!
very TRX850 style ( ok sue me I own one )

[husaberg]

That my man is pure porn!
very TRX850 style ( ok sue me I own one )


Interestingly the initial hot set up for a TRX850 was to bin thew swingarm and forks for YZF750 forks swing arm wheels etc.
almost slotted straight in.:eek:

[carburator]

Interestingly the initial hot set up for a TRX850 was to bin thew swingarm and forks for YZF750 forks swing arm wheels etc.
almost slotted straight in.:eek:

yes they do, infact the over racing 15 bikes where that setup, three came to NZ
I had one, the R6_KID has got one and the other ? who knows where that went.

I built up one for road use with the YZF750 setup and gearbox ( trx was 5 speed )
not a rocketship like a modern r1 but made a lot of people guess on the road.

Im currently in the throws ( either I sell all the last of the goodies ) or Im going to make
someone local to me with a 09 r1 cross plane chassis a offer and put 09R1 running
gear on a trxframe but do the early r6 tail setup as the bum on a trx is not
lady like at all...

[husaberg]

yes they do, infact the over racing 15 bikes where that setup, three came to NZ
I had one, the R6_KID has got one and the other ? who knows where that went.

I built up one for road use with the YZF750 setup and gearbox ( trx was 5 speed )
not a rocketship like a modern r1 but made a lot of people guess on the road.

Im currently in the throws ( either I sell all the last of the goodies ) or Im going to make
someone local to me with a 09 r1 cross plane chassis a offer and put 09R1 running
gear on a trxframe but do the early r6 tail setup as the bum on a trx is not
lady like at all...

Far be it from me to suggest as in my opinion the R1 isn't the most svelte either. Maybe aprilia 250 style. unless of course you perfer the more generousness curves
http://dodrt.dod.no/004/images/rs250r.jpg

[Bert]

Interesting Sunday racing.

first thing; big thanks to the Wellington team for putting on a great day even though it was rather cold for half of it. good turn out of bikes and some great racing to watch (even the Kart guys were watching).


not quite sure how the B-grade "I'm going out to warn up the bike for the A-grade rider (cause he's too cold to go on the track)" rider; ends up winning the first A-grade race... :first:

then come back to burgle B-grade for the rest of the day.... the aforementioned A-grade rider could only manage best place of second :lol::lol::lol:

Well done crazyman; I'm sure that it means your little bro is shouting the second round after I shout first round (for crashing again)...:Oops:


Yes well Team GPR crash test dummy was in full flight. Nice little high side in turn 2; left me walking in circles for a little while.
Motor locked up solid and spat me off; source of the issue munched up ceramic bearing.... photos to come soon.
And well my FFM M9 helmet has seen better days (pulled it apart tonight find the internals smashed into two pieces); that explains the headache and slightly sore neck....
Time for an upgrade (anyone tried a Airoh helmet) ???

more to come.

[crazy man]

me a burgler :cool: lol l went back to b grade cause there faster lol l found the track had a lot more grip in the wet than years ago. had a good days racing . ps how is the body after flying a bike bert (-;

[Bert]

Well, Crazyman has finished the hard part; 300kg roller mounted and running smooth as silk.
plus the addition of some alloy tread-plate to finish things off... :love:

Now I've got to sort out the electrics and software
(watch this space; I refuse to pay $500 for interface; when we do it on a daily basis at work).. just got to get my shit together.

[husaberg]

Well, Crazyman has finished the hard part; 300kg roller mounted and running smooth as silk.
plus the addition of some alloy tread-plate to finish things off... :love:

Now I've got to sort out the electrics and software (watch this space)..

Yow's doing the same at the moment check his thread

[TZ350]

Well, Crazyman has finished the hard part; 300kg roller mounted and running smooth as silk. Now I've got to sort out the electrics and software (watch this space)..

Wow you guys do some impressive stuff, thats two dynos being built. Buckets is getting seriously interesting.

[crazy man]

who is that madmen on the dyno lol:innocent:

[Bert]

Wow you guys do some impressive stuff, thats two dynos being built. Buckets is getting seriously interesting.
Well there isn't that much to do in Palmy Rob.... :psst:and we don't loose 10 hours a week just getting to&from work; this enables some extra project time:niceone:


The GPR Twin Smoker... Crazyman's toy since (he's a burglar and has to move out of B) :killingme:killingme:killingme

GPR100PT Progress:
Hole fixed in the casing, new pistons, new heads and another Crazy Man frame.
GPR Handbuilt Product range has expanded: Swingarm, rearsets and triple clamps... :niceone:

[F5 Dave]

Crumbs, mounted puts in perspective that S/W. No way it would flex.

[Ivan]

damn this is looking good my poor frames buried in the shed while i mucking round with other projects ave to finish it eeekkk what shocks you guys running??? you using the linkless one you showed me at yours bert or are you running a link setup how does the single cylinder 4 stroke go in this style of frame around kaitoke? right gonna drag out the pieces and finish this

[Bert]

damn this is looking good my poor frames buried in the shed while i mucking round with other projects ave to finish it eeekkk

Just hurry up and get on with it; You will be married with kids before you get it finished...


what shocks you guys running??? you using the linkless one you showed me at yours bert or are you running a link setup

Currently just running through the stock of RS bits and it is configured the same as a RS; with adjustable dog/linkage. But we have a plan when supplies run out.


how does the single cylinder 4 stroke go in this style of frame around kaitoke? right gonna drag out the pieces and finish this

Both Regan and Scott are having a ball on the FXR.



Crumbs, mounted puts in perspective that S/W. No way it would flex.
??? WTF are you on about ??? Let me guess the new swingarm looks solid ???

[crazy man]

Crumbs, mounted puts in perspective that S/W. No way it would flex.what you talking about willis

[Moooools]

what you talking about willis

He is a bit slow. Maybe if he had that 100 finished he would be more onto it.:innocent:

I think he means the swing arm is looking stiff.

[F5 Dave]

yeah thousand cc stiff;). As you said make the 1st one stronger & see from there.

[crazy man]

got the front wheel mounted but all burn out and had it with the projected now

[Yow Ling]

got the front wheel mounted but all burn out and had it with the projected now

Does appear you need a break.

[crazy man]

266459l have winner (-; over 50hp eat your hart out lol:banana:

[worm13]

266459l have winner (-; over 50hp eat your hart out lol:banana:

is that all the 750 puts out.... stop using the excuse that your slow and just admit the bike is rubbish!! :lol::lol::killingme:killingme

[crazy man]

is that all the 750 puts out.... stop using the excuse that your slow and just admit the bike is rubbish!! :lol::lol::killingme:killingmethats a 150 man lol l cant get the thing right most the time it reading 350 hp lol

[Bert]

Things have been a little quite at team GPR headquarters; Everyone has been head down a55 up working on new projects.

But given all the interest in the GT125s of late here's an updated photo of Crazyman's LC 100 twin getting close now (if only he had more time..)...

267513

Having seen this in the flesh; I reckon you 4ts need to watch out :2thumbsup

Love the hydroformed Pipes & swingarm. and not to mention the team GPR bling...

I think we have both decided that the tank shape isn't working for either of our bikes (too tall and too rounded).
So we will be doing a few mods (and sharp'ing it up) to this one and then use it as a plug too make a female mould... watch this space...

[F5 Dave]

Looking forward to seeing the twin in action. Sounded good last time I saw it - which I think was Ohakune street race. Maybe.

[crazy man]

l cant remember if l took it to Ohakune but yer cant wait to get it back out racing. l never took it back out after l realy got some good power out of it. l guess l felt it may go bang on me . so what will happen will happen

[F5 Dave]

It was some street race, maybe Foxton, but I have a clear fuzzy picture in my mind if that makes sense.

[worm13]

l cant remember if l took it to Ohakune but yer cant wait to get it back out racing. l never took it back out after l realy got some good power out of it. l guess l felt if may go bang on me . so what will happen will happen

And that stopped you why?? you never used that theroy with the other buckets hahaha :)

[crazy man]

And that stopped you why?? you never used that theroy with the other buckets hahaha :)prombly was the time l moved to f3

[husaberg]

I guess Brent may have showed you this thread Scott.

http://www.pit-lane.biz/t3107-gp-125-250-why-hydroforming-is-not-as-good-as-welded-cones

Don't worry about the title holey shit look at his pipes the guys a Artist, anyway he avoids the wrinkles by........... well you can read.

<center><img src="http://i44.servimg.com/u/f44/17/64/11/27/mvc-0111.jpg" width="640px"/><center>

[worm13]

prombly was the time l moved to f3

Oh I thought the move to f3 was because you wanted to make a bigger bang!! :lol::lol::lol:

[crazy man]

the good thing l like about hydroforming pips is you can make 5 of them to 1 of the other . more chance for more hp by changing little things every time you make one. l made the ones on the twin over 10 years ago. l had to change them around a bit to suit the new frame. a good starting of point for now untill l get back into it. l made a machine for folding the edges around the sheet cut outs.

[crazy man]

Oh I thought the move to f3 was because you wanted to make a bigger bang!! :lol::lol::lol:and l did to:ar15:

[mossy1200]

Makes me want to build a 2 smoker.

Anyone want a Buell,RSV,R6,XL,XR,CRF,TL thingy. Will trade something fast that handles well plus cash.

[crazy man]

Makes me want to build a 2 smoker.

Anyone want a Buell,RSV,R6,XL,XR,CRF,TL thingy. Will trade something fast that handles well plus cash.it is fun but building it reliable is the trick! so time will tell

[worm13]

and l did to:ar15:

My hero!!:clap::clap:

[Bert]

So Crazyman, tell us all about the Team GPR's efforts today...

So did anyone carry on the crash testing of the GPR frames????

A & B grade wins???

[richban]

So Crazyman, tell us all about the Team GPR's efforts today...

So did anyone carry on the crash testing of the GPR frames????

A & B grade wins???

Didn't see the A win but watched the B grade get burgled. he he. Was good to see some many new faces out there. I am so itching to get back amongst it.

[F5 Dave]

There was a nice little Pirouette at the hairpin when it got wet later in the day.

So where were you, you slacker?

[Bert]

There was a nice little Pirouette at the hairpin when it got wet later in the day.

So where were you, you slacker?

Manflu :sick: and engine still sitting on the bench...:facepalm:

next month..

[Henk]

Manflu :sick:

I'm sure they have some cement for oil spills you could have borrowed.

[crazy man]

So Crazyman, tell us all about the Team GPR's efforts today...

So did anyone carry on the crash testing of the GPR frames????

A & B grade wins???you better come out and keep me honest berty but hopfully l will have the new bike going soon for a grade. l did come of after going out in a grade in third place when it started to rain so first off on the four stroke. the bro got his first win in stead of starting out the back with mr fastie. but a fun day all round

[crazy man]

just timed myself of my video.. l'm way to slow for A grade

[gatch]

All good man. I just bought the legendary old silver with red stripe cb125.

I'm keen to have a crack at the B grade title.

[crazy man]

All good man. I just bought the legendary old silver with red stripe cb125.

I'm keen to have a crack at the B grade title.you better post a pic of it.. l'v not seen it.. its going to be all go in b grade then. what about your gl145 sparder thingy

[Skunk]

you better post a pic of it.. l'v not seen it.. its going to be all go in b grade then

Really? You'd have to be a real newbie to not have seen that old CB single.

[crazy man]

Really? You'd have to be a real newbie to not have seen that old CB single.l'm a old newbie? or somthing like that lol .only done about 4 meeting in 10 years

[worm13]

l'm a old newbie? or somthing like that lol .only done about 4 meeting in 10 years

old newbie dont you mean a has been or even a was been hahaha

[F5 Dave]

Hey Scott, it was Murray Cross's old CB.

[crazy man]

Hey Scott, it was Murray Cross's old CB.ok l know it the one with the worlds longest muffer on it lol but went not to bad

[F5 Dave]

Well it now has the worlds most buckled wheel but previous owner didn't seem motivated to fix it.

[gatch]

you better post a pic of it.. l'v not seen it.. its going to be all go in b grade then. what about your gl145 sparder thingy

Spada is still suffering from unknown engine gremlins. It's relegated to the unpopular corner of the shed for now.


Well it now has the worlds most buckled wheel but previous owner didn't seem motivated to fix it.

I'm certain it has a new wheel on the front now. And a new tire or two ?

[crazy man]

whats the Spada / gl145 doing that we cant fix on here?

[husaberg]

Spada is still suffering from unknown engine gremlins.

<img src="http://news.autocarpoint.co.nz/portals/0/ACP_MediaGallery/30856/7524_p.jpg" width="208px"/> <img src="http://icanhascheezburger.wordpress.com/files/2008/01/funny-pictures-gremlin-cat-screams.jpg" width="340px"/>

[gatch]

whats the Spada / gl145 doing that we cant fix on here?

Doesn't rev over 5k rpm. It just coughs and farts and goes nowhere.

So far as I can see, the wiring is sound. Timing is spot on. Cam timing is spot on. There is no leaks in the inlet/head/exhaust. Motor is stock except for shorter pipe. Compression is good. Valve clearances are good. Not sure if its the stock carb, but its about the same size, just a little keihin round slide job. Have tried jets from 105-122, doesn't seem to make a difference..

Obviously I'm missing something, but I can't figure it out..

[crazy man]

Doesn't rev over 5k rpm. It just coughs and farts and goes nowhere.

So far as I can see, the wiring is sound. Timing is spot on. Cam timing is spot on. There is no leaks in the inlet/head/exhaust. Motor is stock except for shorter pipe. Compression is good. Valve clearances are good. Not sure if its the stock carb, but its about the same size, just a little keihin round slide job. Have tried jets from 105-122, doesn't seem to make a difference..

Obviously I'm missing something, but I can't figure it out..has it ever run right? no air box stuffed plug comes to mine

[husaberg]

has it every run right? no air box stuffed plug comes to mine

Fuel, air, compression and er...... ignition might be more than the plug.
but by pass the kill for a start.

[richban]

Doesn't rev over 5k rpm. It just coughs and farts and goes nowhere.

So far as I can see, the wiring is sound. Timing is spot on. Cam timing is spot on. There is no leaks in the inlet/head/exhaust. Motor is stock except for shorter pipe. Compression is good. Valve clearances are good. Not sure if its the stock carb, but its about the same size, just a little keihin round slide job. Have tried jets from 105-122, doesn't seem to make a difference..

Obviously I'm missing something, but I can't figure it out..



I had the same problem when I put the engine in my new bike. Was the carb that had been kicking around on the bench for quite a while. Engine would only rev to mid throttle. Cleaned it and all good.

[husaberg]

I had the same problem when I put the engine in my new bike. Was the carb that had been kicking around on the bench for quite a while. Engine would only rev to mid throttle. Cleaned it and all good.

I had a mainjet come loose (because i didn't tighten it i guess) ran a bit rich over 1/2 throttle surprisingly:facepalm:
ie would run over 1/2 throttle

[Grumph]

Doesn't rev over 5k rpm. It just coughs and farts and goes nowhere.

So far as I can see, the wiring is sound. Timing is spot on. Cam timing is spot on. There is no leaks in the inlet/head/exhaust. Motor is stock except for shorter pipe. Compression is good. Valve clearances are good. Not sure if its the stock carb, but its about the same size, just a little keihin round slide job. Have tried jets from 105-122, doesn't seem to make a difference..

Obviously I'm missing something, but I can't figure it out..

Put a timing light on it...sounds like it's not advancing.

[bucketracer]

Doesn't rev over 5k rpm. It just coughs and farts and goes nowhere.

5K is where its starting to make power and cylinder pressure, so possibly an electrical breakdown under load in the coil, cap, plug or black box.

Dad tells me TZ's sometimes had a similar problem and it was the spring in the kill switch going into sympathetic oscillation at a certain rpm allowing the button to bounce around killing the motor like a rev limiter.

[gatch]

Come to think of it, the kill switch doesn't actually work now. "On" is on and "off" is also on. If the switch is poked, maybe there is another bad connection.

I'll remove the loom (3 wires), strip all the terminals and solder them.

[crazy man]

just got the cosh drive made for my front wheel to make it a rear . thank god dads in new york l dont have to sneak now

[worm13]

just got the cosh drive made for my front wheel to make it a rear . thank god dads in new york l dont have to sneak now

sounds shady to me!!

[husaberg]

just got the cosh drive made for my front wheel to make it a rear . thank god dads in new york l dont have to sneak now

post a pic please Scott have to do the same.
Front to rear con version but the CBR400 NC23 is a little weak around the disk mounting for my liking.:shifty:




below is a few ideas i have stolen. My original idea was similar to the Aprilia and the bottom one.But now i see the SL100 Honda had bolt on pegs i kind of are leaning towards an hybrid of them both system.

<img src="http://www.emotouk.com/mvagusta/cushdrive/cush_lrg2.jpg" width="340px"/><img src="http://i44.tinypic.com/206d2fo.jpg" width="340px"/><img src="http://i41.tinypic.com/33p52r7.jpg" width="340px"/><img src="http://www.stevemaney.com/products/Cush%20drive%20unit.jpg" width="340px"/><img src="http://www.oppracing.com/images/uploaded/160182_sprocket_carr_p62662_062b1e.jpg" width="340px"/><img src="http://www.davidsilverspares.co.uk/graphics/parts/41241222000P_large.jpg" width="340px"/><img src="http://i139.photobucket.com/albums/q320/bmcdonau/SL100/Picture1283.jpg" width="340px"/><img src="http://www.3upracing.co.uk/images/TZR3MA-YPVS/PC150253.JPG" width="340px"/><img src=" http://images.wemoto.com/full/CUSH_DRIVE/10014611.jpg" width="162px"/>

[crazy man]

post a pic please Scott have to do the same.
Front to rear con version but the CBR400 NC23 is a little weak around the disk mounting for my liking.:shifty:ok will tomorrow

[crazy man]

269168269175hope thats helps glen . l had to change the pitch to the rs because of the wheel spigit been larger. and a new pic of my bucket build

[F5 Dave]

what are you using for donut dampers Scott? they look bought. My old NF4 RS ones are pretty tired.

[crazy man]

what are you using for donut dampers Scott? they look bought. My old NF4 RS ones are pretty tired.there just bought ones there ,but have made ones for rs wheels. we have made them out of urethane. they last very well

[Grumph]

what are you using for donut dampers Scott? they look bought. My old NF4 RS ones are pretty tired.

A few years back when you'd see 7 to 10 RS125's at a canterbury club day, I was making the cush donuts up in urethane.
Russ Bleach was ordering a good size batch twice a year - we had a good business going for a while.
A lot of those chassis are now appearing in buckets and need the same cush rubbers....

Talk to me at the BOB...it may be worth doing another batch.

[F5 Dave]

Sounds fair, when I bought a spoked hub off him 10 years ago it had no bushes, so he was holding out:shit:

I've never tried machining something soft, I can imagine the funny side. I suppose one could throw some rod in the freezer & act quick.

[Buckets4Me]

id be keen for 2 sets of them for rs wheels ;)

[kel]

id be keen for 2 sets of them for rs wheels ;)

I'd be keen for two sets also. Probably a few more up here that would be interested as well.

[Grumph]

Apologies for diverting your thread, Scott...if you've got the time you're welcome to supply these guys....

i will be at the BoB - and will discuss a batch anyway - it'll supplement the pension....

[ellipsis]

supplementary tension....

...are you sure you want it...

[crazy man]

Apologies for diverting your thread, Scott...if you've got the time you're welcome to supply these guys....

i will be at the BoB - and will discuss a batch anyway - it'll supplement the pension....thats fine Greg , l seem to stuggle to get my own stuff done these days.. so go for it

[quallman1234]

I'd be keen for two sets also. Probably a few more up here that would be interested as well.

2 Sets here too

[Bert]

thats fine Greg , l seem to stuggle to get my own stuff done these days.. so go for it

Sounds like you need a hand.... I need a break... how about Thursday??
Bucket bits building bullshit (and maybe Beer) 5 B's now we're talking...:pinch:

[husaberg]

Sounds like you need a hand.... I need a break... how about Thursday??
Bucket bits building bullshit (and maybe Beer) 5 B's now we're talking...:pinch:

Er..... six or is that 7 if Bert/Brent will be there:whistle:

I forgot to ask Scott
http://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=269168&d=1346297829&thumb=1
Is that a converted front?
Are you using the allen heads to locate it?
Whats going to hold in against the hub?

[crazy man]

Sounds like you need a hand.... I need a break... how about Thursday??
Bucket bits building bullshit (and maybe Beer) 5 B's now we're talking...:pinch:all go then thursday rock on

[Bert]

I forgot to ask Scott
http://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=269168&d=1346297829&thumb=1
Is that a converted front?
Are you using the allen heads to locate it?
Whats going to hold in against the hub?

Look really cool; in-fact already put my order in for my 50cc or wets...
I'm sure Scott will be back soon; Husa it will work out the same as a RS125 (so I'm assuming he will make a quick change bearing hub?).

[crazy man]

Er..... six or is that 7 if Bert/Brent will be there:whistle:

I forgot to ask Scott
http://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=269168&d=1346297829&thumb=1
Is that a converted front?
Are you using the allen heads to locate it?
Whats going to hold in against the hub?thats a cbr900 front wheel and yes useing allen head or cap screws and counter board into the plate

[Sketchy_Racer]

thats a cbr900 front wheel and yes useing allen head or cap screws and counter board into the plate

For what it is worth I have been running a CBR600 front wheel on the rear of my bucket for a couple years now, I have been running it direct drive without any rubber bushes and it has been great with no problems with chain damage etc. If anything I like the feel direct connection with the rear when getting on the gas out of corners.

Nice machine work, looks factory!

[husaberg]

thats a cbr900 front wheel and yes useing allen head or cap screws and counter board into the plate


I was meaning the the Allen head poking out of the sprocket but i now guess they are just sitting there.
For a minute i thought you were going to use them to locate the sprocket inside the bushes (by the head) if that makes sense to you.
but i gather you are going to locate it the traditional RS way as Bert said with the three fingered bearing carrier to sandwich the sprocket.


For what it is worth I have been running a CBR600 front wheel on the rear of my bucket for a couple years now, I have been running it direct drive without any rubber bushes and it has been great with no problems with chain damage etc. If anything I like the feel direct connection with the rear when getting on the gas out of corners.

Nice machine work, looks factory!
I made a bit of a mistake with my choice of CBR400 NC23 wheel (Front for Rear)as the disk mounting holes are 2 mm smaller than most Honda's and there is piss all support around the disk mounting to make them bigger.
I hoping the theory the brakes probably have more hp than the engine anyway so it should hopefully still be up to it.
not only that the NF4 frame doesn't love the 3.5 rear as much as i would like it too.
oh yes it does look nice.

[Drew]

Did that motor start out as an X4, or a GT?

[crazy man]

Did that motor start out as an X4, or a GT?it started life as a gt

[crazy man]

I was meaning the the Allen head poking out of the sprocket but i now guess they are just sitting there.
For a minute i thought you were going to use them to locate the sprocket inside the bushes (by the head) if that makes sense to you.
but i gather you are going to locate it the traditional RS way as Bert said with the three fingered bearing carrier to sandwich the sprocket.


I made a bit of a mistake with my choice of CBR400 NC23 wheel (Front for Rear)as the disk mounting holes are 2 mm smaller than most Honda's and there is piss all support around the disk mounting to make them bigger.
I hoping the theory the brakes probably have more hp than the engine anyway so it should hopefully still be up to it.
not only that the NF4 frame doesn't love the 3.5 rear as much as i would like it too.
oh yes it does look nice.yes the allen heads is for locating the sprocket inside the bushes like a rs

[Sketchy_Racer]

I made a bit of a mistake with my choice of CBR400 NC23 wheel (Front for Rear)as the disk mounting holes are 2 mm smaller than most Honda's and there is piss all support around the disk mounting to make them bigger.
I hoping the theory the brakes probably have more hp than the engine anyway so it should hopefully still be up to it.
not only that the NF4 frame doesn't love the 3.5 rear as much as i would like it too.
oh yes it does look nice.

I'm guessing when you mean it has a smaller screw pattern you mean that it has M6 threads as opposed to M8?

If that's the case you will have absolutely no problem what so ever as mine is the same. The force required to break the clamping force between the wheel and the sprocket carrier will be heaps. And even if it did the 6 x M6 cap screws will hold it easily

[Drew]

it started life as a gt

Easier or harder to start with an X4 ya reckon, given that they already have allowence for reeds?

[Bert]

For what it is worth I have been running a CBR600 front wheel on the rear of my bucket for a couple years now, I have been running it direct drive without any rubber bushes and it has been great with no problems with chain damage etc. If anything I like the feel direct connection with the rear when getting on the gas out of corners.

Nice machine work, looks factory!

Sorry Sketchy
buts here's a couple of sneaky pics (been saving them since 2010):innocent:
269406269407



Easier or harder to start with an X4 ya reckon, given that they already have allowence for reeds?
Got to be easier to start with the X4. reeds area really your best option...

[crazy man]

Easier or harder to start with an X4 ya reckon, given that they already have allowence for reeds?l have never had a x4 . untill you said on you thread they are diffient l had no idea. saves me looking for a sec motor and making the misstack of getting the wrong motor. have you had to make ex chamber for your bike or robbed somthing close of somthing?

[Drew]

l have never had a x4 . untill you said on you thread they are diffient l had no idea. saves me looking for a sec motor and making the misstack of getting the wrong motor. have you had to make ex chamber for your bike or robbed somthing close of somthing?

I have chucked some horrible home grown bits together to get it running. I have zero experience with two strokes, and no idea how to make pipes.

I'm waiting till someone with a clue sees what I'm running (if I ever get the heap of shit to a track), and take pity on me.

[crazy man]

I have chucked some horrible home grown bits together to get it running. I have zero experience with two strokes, and no idea how to make pipes.

I'm waiting till someone with a clue sees what I'm running (if I ever get the heap of shit to a track), and take pity on me.l thought some 65 cc mx chambers may do the job ok. l did have 2 spear ones for my bike but cant find them for the love of me .. but been over 10 years from when l last run the engine

[richban]

269406


Haaa ha I remember that day. To lazy to change that rear tyre. Was entertaining to watch.

[Drew]

l thought some 65 cc mx chambers may do the job ok. l did have 2 spear ones for my bike but cant find them for the love of me .. but been over 10 years from when l last run the engine

Would be easier to just chuck on some motoX critters on there I guess, wonder what sorta rev range we're talking about compared to the 10,000 optimistic limit on my motor.

I'll stop hijacking this thread now. Sorry.

[Sketchy_Racer]

Haaa ha I remember that day. To lazy to change that rear tyre. Was entertaining to watch.

Haha yeah it was the day I got a wild tank slapper coming down the hill and scared the poop out of the people watching on pit wall (and myself!) It's on video somewhere, a huge step out as I turned into the chicane coming down the hill

[crazy man]

Would be easier to just chuck on some motoX critters on there I guess, wonder what sorta rev range we're talking about compared to the 10,000 optimistic limit on my motor.

I'll stop hijacking this thread now. Sorry.thats fine l will just send you the bill lol

[Bert]

Would be easier to just chuck on some motoX critters on there I guess, wonder what sorta rev range we're talking about compared to the 10,000 optimistic limit on my motor.

I'll stop hijacking this thread now. Sorry.

Don't worry Drew; your not hijacking the thread (you are not calling us all c#nts yet)..

Take a port rubbing and do some measurements (port heights and sizes); we can all put a couple of cents in designing a pipe.
Then you can match it up to the closest miniMX, racing scooter (or comp chainsaw:innocent:) pipe....

why 10000 RPM? they were built for rev'ing and if you really want to get anything out of it lift the limit a little more.

a question for you - what's the con-rod spec's (length, little/big end sizes etc)?

[F5 Dave]

10,000 is probably a good idea as Drew will be too tight to rebuild the crank to handle more revs.

Husi I also found my 3.5" spoked wet only fits at the very back of the NF4 sw. Have to be lucky with gearing & chain length.

[kel]

Husi I also found my 3.5" spoked wet only fits at the very back of the NF4 sw. Have to be lucky with gearing & chain length.
This must be the pre 91 swingarm (has the supports welded in right down at the junction rather than half way up the swingarm). 91 to 94 swingarms are 170mm wide and take the 3.5" rim. Was 93/94 they first offered the 3.5" rim, it drops straight. I believe some of the latter rims have a wider hub, this is why the NX4 sprocket bearing collar thingy doesnt work in the NF4, you end up with 5mm or so gap. Seems to be only part 3 (collar) from the parts manual that would need to be changed?

[Drew]

Don't worry Drew; your not hijacking the thread (you are not calling us all c#nts yet)..

Take a port rubbing and do some measurements (port heights and sizes); we can all put a couple of cents in designing a pipe.
Then you can match it up to the closest miniMX, racing scooter (or comp chainsaw:innocent:) pipe....

why 10000 RPM? they were built for rev'ing and if you really want to get anything out of it lift the limit a little more.

a question for you - what's the con-rod spec's (length, little/big end sizes etc)?I call everyone cunt. The way some people call everyone bro, or mate. It's just my way.

Port rubbing is an unfamiliar term for me, but I guess from the context I stick a piece of cardboard down a cylinder and rub it to get an outline? That'll tell me how far from the top everything is? Given the stroke being set, it's possible to determine timing?

Someone posted in my build thread about rod sizes, all I remember is 12mm gudgeon, which means KTM65 slugs are a go as replacements.

Dave, you're more than welcome to come pick up one of the spare cranks and have it built to rev like fuck. I just don't have the money.

[jasonu]

This must be the pre 91 swingarm (has the supports welded in right down at the junction rather than half way up the swingarm). 91 to 94 swingarms are 170mm wide and take the 3.5" rim. Was 93/94 they first offered the 3.5" rim, it drops straight. I believe some of the latter rims have a wider hub, this is why the NX4 sprocket bearing collar thingy doesnt work in the NF4, you end up with 5mm or so gap. Seems to be only part 3 (collar) from the parts manual that would need to be changed?

You are correct

[F5 Dave]

Hmm, I thought I had an '89 & two '91 swing arms pass through my mitts, I ended up using what I though were the 91s, they are different to the 89. The bikes came with 91 forks 90s are thinner/damper rod & pre adjusters. Weird.

I have found the 89 sprocket collar doesn't work on 91 wheels, its ~5mm too short

[F5 Dave]

. . Dave, you're more than welcome to come pick up one of the spare cranks and have it built to rev like fuck. I just don't have the money.
and either do I. Cunty.;)

[jasonu]

Hmm, I thought I had an '89 & two '91 swing arms pass through my mitts, I ended up using what I though were the 91s, they are different to the 89. The bikes came with 91 forks 90s are thinner/damper rod & pre adjusters. Weird.

The 89 sa has a sheet metal web where the sa meets the brace, 90 thru 94 have a bit of square section joining the sa to the brace a bit further up.
Correct about the forks. The 94 rear wheel is 3.5 wide ie it has the NX4 rim with the NF4 hub and spoke pattern and has '93' cast into one of the spokes.

[Drew]

and either do I. Cunty.;)

I'm gonna sell the good motor out of my RGV, to fund a half decent build. Got a clever (very fuckin clever actually) machinist who is willing to help with things, and very good mate who has lots of motorcycle bits lying around, and I do alright swinging spanners.

All hinging on one small thing. Me enjoying riding round small tracks, on small bikes. I know I fuckin hated riding an RGV at a full sized track.

[F5 Dave]

The 89 sa has a sheet metal web where the sa meets the brace, 90 thru 94 have a bit of square section joining the sa to the brace a bit further up. . .
Yes my 89 had the sheet metal & my others had the square section. But perhaps the 90 was thinner than the 91-94 despite the square section?

[F5 Dave]

I'm gonna sell the good motor out of my RGV, to fund a half decent build. Got a clever (very fuckin clever actually) machinist who is willing to help with things, and very good mate who has lots of motorcycle bits lying around, and I do alright swinging spanners.

All hinging on one small thing. Me enjoying riding round small tracks, on small bikes. I know I fuckin hated riding an RGV at a full sized track.

yeah I sold an old bike to fund a few things, but all it did was clear existing debt & make me think I was rich for a fleeting time.

That Sketchy guy seems to like the RGV as a bucket chassis so I think you'll cope.


- that's not to say you won't whine like an old Valiant diff which leaked its oil out in the late 80s.

[Drew]

- that's not to say you won't whine like an old Valiant diff which leaked its oil out in the late 80s.Hahahahahahahaha, old Valient diff. Cunt.

[crazy man]

what you homo's up to ? l could be close to pulling of my bike build in the next 2 weeks

[kel]

what you homo's up to ? l could be close to pulling of my bike build in the next 2 weeks

well at least he didnt say "pulling off":laugh:

[Bert]

what you homo's up to ? l could be close to pulling of my bike build in the next 2 weeks

2 weeks, two days mate. Stop watching motoGPs!!

tank; electrics and all go... Beat Regan's gpr400 build; how long has it been now??
put aside that other project and sort this one out; then :drinkup:

http://gprnz.com/ (http://gprnz.zohosites.com/)

[crazy man]

2 weeks, two days mate. Stop watching motoGPs!!

tank; electrics and all go... Beat Regan's gpr400 build; how long has it been now??
put aside that other project and sort this one out; then :drinkup:whats going on in 2 weeks two days? spent 3 hours cleaning the carbs. bit of a mess. just putting on the electrics . bought the water pump . still a bit to go . regans bike was running tonight just needs the chain. hes made a nice tidy job of it..and yes a tank ? l could just put the rg50 one on to get me going. oh yer motogp humm ..bye

[crazy man]

well at least he didnt say "pulling off":laugh:smarty pants:crazy:

[Bert]

I call everyone cunt. The way some people call everyone bro, or mate. It's just my way.

Port rubbing is an unfamiliar term for me, but I guess from the context I stick a piece of cardboard down a cylinder and rub it to get an outline? That'll tell me how far from the top everything is? Given the stroke being set, it's possible to determine timing?

bro mate c#nt or in this case Drew..

Yes; stick in some think'ish paper or card and rub it hard enough to get an out-line of all the ports (without moving moving it).
then as you say stroke is set and the basic calc's are form 3 maths from there...
(or go back through the 500 pages of the ESE thread for more complex calculations)

you should end up with something like this.
269472

[speedpro]

It makesw it easier to scan the portmap into the PC if you put the edge of the paper between ports.

[crazy man]

the real beast fired into life today .sounds better than ever just has a small fuel block to one of the carbs.:woohoo:

[Sketchy_Racer]

the real beast fired into life today .sounds better than ever just has a small fuel block to one of the carbs.:woohoo:

Nice I wish I was having the same success! Argh electronics!

[Bert]

the real beast fired into life today .sounds better than ever just has a small fuel block to one of the carbs.:woohoo:


http://youtu.be/IIxcQr-eglE

one very smiley Crazyman !!!!

or visit:

http://www.gprnz.com/blogs/category/Projects/

[crazy man]

lol l see you did get a smile at the end to:eek:

[worm13]

I had a little wee from the sound of it... sounds pretty sweet!

[richban]

lol l see you did get a smile at the end to:eek:



Nice work. Now you can stop with the B grade burgling.

[bucketracer]

Great work, 100cc water cooled 2-Stroke twin, love the sound.

[crazy man]

Nice work. Now you can stop with the B grade burgling.so you want to lap me and catch me doing a superman of my bike:eek:

[gatch]

so you want to lap me and catch me doing a superman of my bike:eek:

Gonna be there next weekend ? So I can learn you how to ride a bike ??

[crazy man]

Gonna be there next weekend ? So I can learn you how to ride a bike ??but your the one lap wonder:msn-wink:

[gatch]

It'll be a fast lap though..

[kel]

the real beast fired into life today

naah theres only one beast; 100kg, 31hp and black! Besides your bike's too pretty. You'll need to give it a more meaningful effeminate name. :innocent:

[crazy man]

naah theres only one beast; 100kg, 31hp and black! Besides your bike's too pretty. You'll need to give it a more meaningful effeminate name. :innocent:my bike bike was known as the beast 15 years ago but now l guess it is only the motor that remains l guess l better call it beauty and the beast lol

[Bert]

hummm:
http://www.trademe.co.nz/a.asp?id=513236882&cc=602&pid=225214466&hbc=&ct=link

[chrisc]

Hey crazy man

May I ask if you could describe your process for welding together the head stock to the top tubes?
I'm just wondering how you keep it all together, square and from twisting when you weld it.

Thanks!

[Drew]

Hey crazy man

May I ask if you could describe your process for welding together the head stock to the top tubes?
I'm just wondering how you keep it all together, square and from twisting when you weld it.

Thanks!It's called a 'gig' or 'jig'.

A post for headstock to sit on, and braces to hold everything else in the right spot.

[crazy man]

Hey crazy man

May I ask if you could describe your process for welding together the head stock to the top tubes?
I'm just wondering how you keep it all together, square and from twisting when you weld it.

Thanks!l would be letting it out the bag lol but l can tell you its done on a milling machine

[chrisc]

It's called a 'gig' or 'jig'.

A post for headstock to sit on, and braces to hold everything else in the right spot.

Sorry, I understand the concept of a jig haha. I was more so looking for a description of his jig, or even a photo for interests sake. I've seen jigs like the following:

Random internet image of jig example
(http://i.ebayimg.com/t/Bicycle-frame-jig-PLANS-Build-custom-chopper-bike-/24/!Bqo+blwB2k~$(KGrHqYOKk!EucO3h6pyBLwVSicpbw~~_3.JP G)

http://www.elsberg-tuning.dk/images/framejig06.jpg

And was wondering if crazyman had done similar or used a smaller jig for just the top tubes and the headstock.

[Drew]

l would be letting it out the bag lol but l can tell you its done on a milling machine


Sorry, I understand the concept of a jig haha. I was more so looking for a description of his jig, or even a photo for interests sake. I've seen jigs like the following:

Random internet image of jig example
(http://i.ebayimg.com/t/Bicycle-frame-jig-PLANS-Build-custom-chopper-bike-/24/!Bqo+blwB2k~$(KGrHqYOKk!EucO3h6pyBLwVSicpbw~~_3.JP G)

http://www.elsberg-tuning.dk/images/framejig06.jpg

And was wondering if crazyman had done similar or used a smaller jig for just the top tubes and the headstock.Looks like I was wrong anyway.

[chrisc]

Yeah I guessed wrong too

[crazy man]

l will have a look at the link . l do it more the tool makers way rather than the fab way. l have never see anyone do it like l do but you never know

[crazy man]

Yeah I guessed wrong tooare you making that ? looks good but thats how most are done but not a bad jig at the end of the day

[chrisc]

are you making that ? looks good but thats how most are done but not a bad jig at the end of the day

Haha I wish! When I finish the current projects, the next one is a bucket frame build based on RS suspension and a 2 stroke single so I am watching eagerly to learn what I can

[crazy man]

Haha I wish! When I finish the current projects, the next one is a bucket frame build based on RS suspension and a 2 stroke single so I am watching eagerly to learn what I canl; may let it out the bag one day but only any good if you have the gear to do it . but the normal way seems to work for most .l just dont know how they keep them state in there jigs ? but must turn out close

[crazy man]

Haha I wish! When I finish the current projects, the next one is a bucket frame build based on RS suspension and a 2 stroke single so I am watching eagerly to learn what I canand yes projects! l'v got to meany my self dam it

[gatch]

and yes projects! l'v got to meany my self dam it

I don't know how you do it. After spending my working week making parts for cunts who hardly even know what it is they want, the last thing I want to do is start making parts for myself or my mates. I wish I just got paid to be a cynical knowitall. Then I'd get paid for my hobby and I could then spend my new found spare time making bikes.

[Brian d marge]

I don't know how you do it. After spending my working week making parts for cunts who hardly even know what it is they want, the last thing I want to do is start making parts for myself or my mates. I wish I just got paid to be a cynical knowitall. Then I'd get paid for my hobby and I could then spend my new found spare time making bikes.


you didnt go and make your hobby your job .......oh dear ....my hobby was motorcycles years ago ....

Stephen

[Bert]

l; may let it out the bag one day but only any good if you have the gear to do it . but the normal way seems to work for most .l just don't know how they keep them straight in their jigs ? but must turn out close

One days some photos might surface... (I wasn't even allowed to take photos of the jigs/mill setup; even for my own records).
more details and project steps will be documented (check out www.GPRnz.com).

Side note: GPR dyno.
Our geek student (read computer programming nerd) has nearly completed our own GPR dyno software; interfaced with our own custom Arduino microprocessor interface.
The ALPHA version will be tested next week (just in time as I've just got my motor back together).
Interface is not only the dyno bits (drum speed, RPM, Airtemp & humidity) but also four other analogue channels (knock, temps, oxygen blablbabla you get the drift)

If all successful for the dyno; the same interface design will get an upgrade and can also be used for on-bike monitoring/datalogging.
too flash for buckets; but we have some other projects on the go!!

[TZ350]

Side note: GPR dyno. Our geek student (read computer programming nerd) has nearly completed our own GPR dyno software; interfaced with our own custom Arduino microprocessor interface. The ALPHA version will be tested next week (just in time as I've just got my motor back together). Interface is not only the dyno bits (drum speed, RPM, Airtemp & humidity) but also four other analogue channels (knock, temps, oxygen blablbabla you get the drift) If all successful for the dyno; the same interface design will get an upgrade and can also be used for on-bike monitoring/datalogging.

That sounds realy good, very impressed and slightly envious.

[quallman1234]

One days some photos might surface... (I wasn't even allowed to take photos of the jigs/mill setup; even for my own records).
more details and project steps will be documented (check out www.GPRnz.com).

Side note: GPR dyno.
Our geek student (read computer programming nerd) has nearly completed our own GPR dyno software; interfaced with our own custom Arduino microprocessor interface.
The ALPHA version will be tested next week (just in time as I've just got my motor back together).
Interface is not only the dyno bits (drum speed, RPM, Airtemp & humidity) but also four other analogue channels (knock, temps, oxygen blablbabla you get the drift)

If all successful for the dyno; the same interface design will get an upgrade and can also be used for on-bike monitoring/datalogging.
too flash for buckets; but we have some other projects on the go!!

That sounds good. Arduino is the way to go! So simple. I have recently made a suspension datalogger on to a SD card with it.

[Yow Ling]

Will this flashy as dyno software be available to purchase?

Ive been tinkering with this drum over the weekend, the big bit of steel is 80mm x 400 diameter, all up around 200 kg with 2 of those plus the drum and endplates
The skinny little axle is 40 mm

270211

[Yow Ling]

I don't know how you do it. After spending my working week making parts for cunts who hardly even know what it is they want, the last thing I want to do is start making parts for myself or my mates. I wish I just got paid to be a cynical knowitall. Then I'd get paid for my hobby and I could then spend my new found spare time making bikes.

Maybe he has a better attitude

[quallman1234]

Will this flashy as dyno software be available to purchase?

Ive been tinkering with this drum over the weekend, the big bit of steel is 80mm x 400 diameter, all up around 200 kg with 2 of those plus the drum and endplates
The skinny little axle is 40 mm

270211

Easy way to do it is use a excel macro.

Hall effect sensor -> Arduino microcontroller -> USB/Serial -> CSV on PC
you can then import the CSV into a excel macro and make it automatically create graphs.

[Drew]

Easy way to do it is use a excel macro.

Hall effect sensor -> Arduino microcontroller -> USB/Serial -> CSV on PC
you can then import the CSV into a excel macro and make it automatically create graphs.You my friend, will be coming round to do this magic on my rolling road.

I do not like the idea of blowing up any more motors, so a tune without having to ride down the road listening to the bike is gonna be better. Having a graph for comparison is a super added bonus!

[quallman1234]

You my friend, will be coming round to do this magic on my rolling road.

I do not like the idea of blowing up any more motors, so a tune without having to ride down the road listening to the bike is gonna be better. Having a graph for comparison is a super added bonus!

Are you going to try make a dyno?

[Drew]

Are you going to try make a dyno?Not a particularly accurate one. Just some thing to laod the motor for tuning. A biasic table type rolling road to use as work bench/tuning platform.

[jellywrestler]

Will this flashy as dyno software be available to purchase?

Ive been tinkering with this drum over the weekend, the big bit of steel is 80mm x 400 diameter, all up around 200 kg with 2 of those plus the drum and endplates
The skinny little axle is 40 mm

270211

if that dont happen you could make a flinstones car!

[Yow Ling]

if that dont happen you could make a flinstones car!

It would only ever be a Flintstones unicycle, one of these is more than enough

[Bert]

That sounds good. Arduino is the way to go! So simple. I have recently made a suspension datalogger on to a SD card with it.

Have to say we are quite impressed with the Arduino's and what they are capable of (outside of this use).
They are never going to replace a real logger; but they have some good offerings and open source examples (and if 10 year olds can make them work; well....)..


Will this flashy as dyno software be available to purchase?

Ive been tinkering with this drum over the weekend, the big bit of steel is 80mm x 400 diameter, all up around 200 kg with 2 of those plus the drum and endplates
The skinny little axle is 40 mm

270211

Yes; we are hoping that we will have a sell'able product soon; I'll post some screenshots after we do some testing this week.
Engineering wise, best talk to Crazyman.


Easy way to do it is use a excel macro.
Hall effect sensor -> Arduino microcontroller -> USB/Serial -> CSV on PC
you can then import the CSV into a excel macro and make it automatically create graphs.

Yes you can; but why?
even in that example why wouldn't you use the serial coms lib write some simple code (even in vba) and connect the PC up (via UBS or Serial) in real time and do it all on the fly??
the choices are endless. but whom has the time.

What we are trying to do is provide an enduser interface (like many other ones out there); as a replacement for some tied software and hardware... at a price that wont break the bank!!.
and we found someone with the time (good old student looking for a project!)...:wacko:



Not a particularly accurate one. Just some thing to laod the motor for tuning. A biasic table type rolling road to use as work bench/tuning platform.

use a hydraulic pump driven off the chain.

[Sketchy_Racer]

For those interested there is a few helpful tools on this site,

http://www.dtec.net.au/Tech%20Articles.htm

one being a inertia calculator as well as mass selection.

I am looking at making a dyno but am not sure what style yet. An eddy current dyno would be cool but $$$

[crazy man]

looks like l'm going to have to build my self a cool fast bucket . the 2 stroke was just for some fun . but keep looking here ! things will happen if l find some money

[TZ350]

<iframe width="420" height="315" src="http://www.youtube.com/embed/HYxs6qF6-oE" frameborder="0" allowfullscreen></iframe>

Disk brake dyno, simple torqe arm with load cell and shaft encoder for rpm.

[Grumph]

According to the engineer whose rolling road we used to use, a pair of Holden HQ discs and calipers can absorb around 150hp comfortably for a fairly long session.
The only problem with his setup was the air over oil load actuating/adjusting method which simply wasn't fast enough - for a bike.
Worked OK on cars.
Having also used one of the Wgtn made Dynopak hydraulic dynos I reckon the disc setup could be rigged to work like the Dynopak which holds the load at a set RPM - or set RPM steps - for a set period. Usually 5 seconds or so, then goes on to the next RPM step.
The one I used we set to record at 250 RPM steps with a max rpm set which the dyno would not let the motor exceed.
Once the operator hears the motor held at the max RPM - or reads it on the tacho - he shuts it down.

Prints out a curve with 250 RPM steps so pretty accurate curve shape.

[Bert]

Interesting Sunday racing.

.......

Yes well Team GPR crash test dummy was in full flight. Nice little high side in turn 2; left me walking in circles for a little while.
Motor locked up solid and spat me off; source of the issue munched up ceramic bearing.... photos to come soon.
And well my FFM M9 helmet has seen better days (pulled it apart tonight find the internals smashed into two pieces); that explains the headache and slightly sore neck....
Time for an upgrade (anyone tried a Airoh helmet) ???

...

Right; well its taken since mid June to get my A into G and finally the TZR100 is going again. new mains bearings (steal C3's this time) & a new piston etc.

After the initial stuffing around with the clutch its all go; including the powervalve servo (thanks Wobbly for the required bits). So some more carb tuning and we will be back next round.
Still haven't done the new higher compression head yet; but given I seem to manage to crash things already so I'm not likely to need the extra power in the near future.:killingme

The long awaited Dyno software Beta test this week (looking like Thursday); I'll post up some screen shots afterwards.

[Bert]

The long awaited Dyno software Beta test this week (looking like Thursday); I'll post up some screen shots afterwards.

Right Thursday turned to Friday; and was compounded with communication issues with the arduino (which I then smoked by the looks of it). limited time meant we didn't resolve these issues.
however the software interface looks great (I will get around to posting up some screenshots).
Our man has done a great job sorting out not only the real time dial display, but also playback, graphs and tool to enable the uses to over plot previous runs; plus a lot of user configurable bits and reports.
Will be building another arduino (with a bit more voltage protection) and do a second beta test run next week.
plus make a couple more disks for the optical pick up (2 and 4 hole options to go with the 10 hole variant) to reduce information overload..

Its all coming along well.


There are some other great examples of DIY dynos in development



Making progress on my dyno, would have done more but after getting the big wheels out of the car boot Im rooted !

l270756270757


Speaking of dyno's, Kyle and I have almost finished our inertia dyno too, did all the machining last weekend and got the frame together this arvo.

What software you looking at running Yow?

270758270759

[Sketchy_Racer]

Looking forward to seeing this screen shot.

How much do you think you will be selling the software for?

[Bert]

Looking forward to seeing this screen shot.

How much do you think you will be selling the software for?

270799

Starting point; don't read too much into the dial labels and scales (the two big ones are dyno roller speed and engine rpm and just need the auto range setup).
The secondaries are what ever you want to add; sensor wise; or they can be calculated values...
.net application; direct USB coms to the Arduino (with coms terminal for debugging); 0.1 sec refresh/recording rate. blabalabla you get the idea.
The choice of colours is to enhance the use with a projector (so one can have a big view when doing testing).
270800

As I've stated the software while built for the dyno primarily if can also be a tool for the use with Arduino data logger (i.e. recording race data on the bike etc.).
so the graphical options are a plenty; currently every thing is time based; but will need to do some more work on a final output: RPM vs. Calculated power (in the HTML reports section).
270801

For you Sketchy; I'm sure we can cut a deal.
you might want to talk to Crazy man on how he balanced up his roller.

[crazy man]

270823getting there with it . got a working front and rear brake fuel tank made . just need to make a tank cover and wire the water pump in. thanks to bert l got a nice controller to turn the water pump on and of at the right temperture,. so the next round is looking good.

[ac3_snow]

getting there with it .

Very sexy piece of work!!
Love watching the updates of your bikes, and very interested in your dyno building progress.

[Ivan]

so nice looking!!! when are you next at kaitoke?? im racing a flat track possibly on ashurst road on the 28th can bring the airbox mould up then?? opr if your in kaitoke sometime soon could drop it off then??

[crazy man]

so nice looking!!! when are you next at kaitoke?? im racing a flat track possibly on ashurst road on the 28th can bring the airbox mould up then?? opr if your in kaitoke sometime soon could drop it off then??28th is are next meeting. will see if l can get somone to pick it up of you then or have to make another date

[crazy man]

just a hand full of things to finsh the bike now . hope it goes ok

[Bert]

Gotta love long weekends.

Some solid hours spent getting things right for summer.

So after the failure of ceramic bearings we are back to trusty old C3s & new YZ100 piston (given the mess made). 34mm carb.
The powervalve is all working; it seems to help full the mid range hole that it had (no print-outs yet too fully confirm its successful application).

Engine is still in a mild state of tune and liked running on 98 rather than race fuel (which would fit given the low comp).
finally got around to adding one of Wobby's radiator bypass units (been sitting under the bench for a while); seems to hold the head temp around 72 degrees.
still got some jetting work to do, but it's close. It seems to run up thought the rev range well now and doesn't seem to suffer flat spots at any point above 4000.

here's an attempted plug chop run to wet people's appetite.

Turn up the sound....


https://www.youtube.com/watch?v=8pKZ2JG7Tv8&feature=plcp

Dyno software is coming along actually managed to get a few runs out of it on Sat; programmer is off fixing a few graphical bugs (mainly around the start of plots and calculations) hopefully by the endo f the week we will have a working version to show off..

[husaberg]

Neat sounds yummy.....

[crazy man]

near finshed
http://images.trademe.co.nz/photoserver/50/238382750_full.jpg

[husaberg]

near finshed
http://images.trademe.co.nz/photoserver/50/238382750_full.jpg
<img src="http://images.trademe.co.nz/photoserver/50/238382750_full.jpg" width="560px"/><img src="http://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=270823&d=1348981305" width="560px"/>
Is the Swingarm Satan's stepbrother (Honda) or one of your own?

[Bert]

Is the Swingarm Satan's stepbrother (Honda) or one of your own?

Go back to page2 :msn-wink:

http://www.kiwibiker.co.nz/forums/showthread.php/150352-Team-GPR?p=1130337596#post1130337596



Looks bloody flash!

[husaberg]

Go back to page2 :msn-wink:

http://www.kiwibiker.co.nz/forums/showthread.php/150352-Team-GPR?p=1130337596#post1130337596



Looks bloody flash!

Yeah, i seen that. (it was on the chassis thread too i think) but was wondering if it was the "Scott version" i guess it is then?

[crazy man]

Yeah, i seen that. (it was on the chassis thread too i think) but was wondering if it was the "Scott version" i guess it is then?so did you think l should call it Satan's stepbrother ? lol cool name.. better than uni link and the rest

[F5 Dave]

Cagiva called their linkage system 'Soft Damp' which was a bit lame, but it's copying a Hoonda part, how about 'Ghey Arm':lol:

[jasonu]

Cagiva called their linkage system 'Soft Damp' which was a bit lame, but it's copying a Hoonda part, how about 'Ghey Arm':lol:

How about leaving giving things names to the gaylords...

[crazy man]

what about gay arm:mad:

[crazy man]

How about leaving giving things names to the gaylords...you can't have to best looking bucket forever

[husaberg]

Cagiva called their linkage system 'Soft Damp' which was a bit lame, but it's copying a Hoonda part, how about 'Ghey Arm':lol:

Rising Damp..........
Or the missing link....... in reference to Scott's old avatar.

so did you think l should call it Satan's stepbrother ? lol cool name.. better than uni link and the rest

The Satan's stepbrother was in reference "to the evil that is Honda" according to some Honda is the devil if not its at least at close relative.

A bit of thoroughly useless information is The old Gull arm was actually patented by Frits Egli don't know what he called it, but Honda payed him to use it.As did Yamaha as well.

[F5 Dave]

Rising Damp..........
Or the missing link....... in reference to Scott's old avatar.


The Satan's stepbrother was in reference "to the evil that is Honda" according to some Honda is the devil if not its at least at close relative.

A bit of thoroughly useless information is The old Gull arm was actually patented by Frits Egli don't know what he called it, but Honda payed him to use it.As did Yamaha as well.

But Suzuki didn't so the story goes which is why the P model RGVs lost the bannana. Supposedly. P was a better lighter stronger arm anyway.

[husaberg]

But Suzuki didn't so the story goes which is why the P model RGVs lost the bannana. Supposedly. P was a better lighter stronger arm anyway.

i should probably clear up what i meant rather than wrote Fitz Egli patented "a triangulated non linkaged swing arm". (I am not sure re the bananna and Gull curve as well.) He issued license to Yamaha and Honda to produce them.
Actually the Germans borrowed the Telelever off a pom who made laveda specials he had showed them a prototype he had done in the hope of selling them the idea. He heard nothing. Then all of a sudden they were producing them.....
When he asked for a explanation they sent him a new BMW he let it go as he hadn't patented it.Whoops
http://www.tonyfoale.com/gallery/FrontEnd/images/bmw_telelever_jpg.jpg Could have been Saxon i think?

Could never understand the Gull arm on the 4 strokes fashion i guess.Put a bend where it should be straight and it is always going to cost weight or strength.

[jasonu]

what about gay arm:mad:

Funny shit right there!!!


you can't have to best looking bucket forever

No worries there. I don't think what I have right now can be classed as a bike, just a pile of bits...

[F5 Dave]

i. . .
Actually the Germans borrowed the Telelever off a pom who made laveda specials he had showed them a prototype he had done in the hope of selling them the idea. He heard nothing. Then all of a sudden they were producing them.....
. . .

Nigel someone, yeah Saxon.

[TZ350]

so did you think l should call it Satan's Stepbrother ?

Good name ......

[seymour14]

Yo Crazyman, your sidecar swinger has made an appearance, just checking to see if this works!

[crazy man]

ya pic is working boyo

[seymour14]

The long awaited first upload (hope this works, it is my first attempt ever). Link is http://youtu.be/Hm8Ihy7X0ok

Enjoy fellow Bucketeers!!:2thumbsup

[Yow Ling]

That was great, heres the version for people who dont read


http://www.youtube.com/watch?v=Hm8Ihy7X0ok&feature=youtu.be

[seymour14]

Forgot to add the link to our Forum, so cheers for that. It was a pretty blustery day, and you can hear the wind howling away nicely over those cool bucket sounds!

Will upload another one in the next day or two (that took about 40 minutes to upload)! Will try it again minus the anti shaking option, because it appears the video is stuttering more then the original, and the shaking version is easier to watch.

:cool:

[Bert]

The long awaited first upload (hope this works, it is my first attempt ever). Link is http://youtu.be/Hm8Ihy7X0ok

Enjoy fellow Bucketeers!!:2thumbsup

Some great footage (It transferred really well Seymour); my ,how things have changed at Taupo.

Spotted a couple of people that are still involved today: 4:25 F5 Dave and Crazy man battling it out for third until.... and was that Steadman leading the F4 pack and Diprose in second??




Right, Second of the series of historical short films from the GPR Archives:

1999 Bucket Sidecar NZGP Taupo

http://youtu.be/L2qhlwSEags

[seymour14]

Great to see this footage again, seems like yesterday! Hope all you sidecar passengers take some pointers from my swinging technique!! Can't believe I still have a left shoulder.:blink:

[F5 Dave]

. . .
Spotted a couple of people that are still involved today: 4:25 F5 Dave and Crazy man battling it out for third until.... and was that Steadman leading the F4 pack and Diprose in second??
. . .

Hmm, that was the crazy wet race was it?? Scott on the Hub centre on slicks came past me & took us both off the track, but I thought that was where Dave Di passed me. If I was on the H you may see the bent bars as I'd crashed early on in the race, but mounted straight off without losing too much. Ahh, good old yoko 101s in Sprint compound

[crazy man]

Hmm, that was the crazy wet race was it?? Scott on the Hub centre on slicks came past me & took us both off the track, but I thought that was where Dave Di passed me. If I was on the H you may see the bent bars as I'd crashed early on in the race, but mounted straight off without losing too much. Ahh, good old yoko 101s in Sprint compoundthe wet race was the year after that one year 2000