FXR Bucket

[thealmightytaco]

I can't seem to find the rules anywhere, other than in F5 you can have up to 50cc 2 stroke or 100cc 4 stroke, and in F4 you can have up to 100cc 2 stroke or up to 140cc 4 stroke. But in the AMCC F4 results there's guys racin' 140 AND 150cc FXR's.

I've got an FXR, and I'm keen to bucket it, make a weekend kit for it, then put it back in road trim for the rest of the week, but what exactly are the rules for FXR's in buckets? Is it okay to keep the 150cc? How the hell do you make 'em 140cc? Without permanently altering it all, aka grinding the crank etc. Carb restrictions? If so what? Where exactly are the official rules? The MNZ pdf's seem to crash my Mozilla everytime I close them so if I knew which one to go to that'd be awesome. Yeah.

Any help much appreciated, cheers.

[justsomeguy]

http://www.trademe.co.nz/Trade-Me-Motors/Motorbikes/Motorbikes/Sports-tourer/auction-41510208.htm

[thealmightytaco]

Yeah I tried to ask him, he wouldn't tell me a damn thing as you can see. But I already have an FXR, I aint buyin another one.

[justsomeguy]

I just read his comments. What a bastard.......:wacko:

[John]

Yeah I tried to ask him, he wouldn't tell me a damn thing as you can see. But I already have an FXR, I aint buyin another one.
shit what a toss pot that cunt is, fuck. that actually makes me fucken sick what a pompus self rightous fuck he is.

[FROSTY]

read this thread
http://www.kiwibiker.co.nz/forums/showthread.php?t=3032
all the road race rules apply to buckets.
They also have suplimentary regs re track damage.
In essence anything that might hit the track in a crash needs to be plastic.
bar end weights need to be replaced with plastic bungs.
Footpegs must be fully encased in rubber or have a plastic "shou" under them. I think theyve even insisted on rear axle bolts being encased in a plastic sleeve.--Skateboard wheels are good for this.
Johm Conner is the man to talk to at amcc
try www.amcc.org then racing then buckets
New open class rules allow 150cc open class buckets

[dangerous]

I can't seem to find the rules anywhere, other than in F5 you can have up to 50cc 2 stroke or 100cc 4 stroke, and in F4 you can have up to 100cc 2 stroke or up to 140cc 4 stroke. But in the AMCC F4 results there's guys racin' 140 AND 150cc FXR's.

Dont know about all the F4/F5 carry on as down here we have an open class in either proddy or modified, Earler this year the 4 stroke max cc's was raised from 140cc too 150cc, so FXR's are fine for racing..... so just get out there and do it:2thumbsup

IMHO, the cc limit shouldent have been raised as the FXR isent a 'bucket' its a factory bike.... (waiting for wise arse crack from Kickaha)
However a rooky on a FXR isent going to do to much damage but a top racer in the field on one will just clean up every time... to me buckets is just that, the good old Kiwi invention a back yard asembly of shit from several bikes.... just like my 2 piles a shit :rockon:

[gav]

Tony Mac has one (FXR) not sure if he's any faster than on his old Honda, still looks fairly standard though.....

[Sketchy_Racer]

i ride a FXR and they are no where near as compedidtive as some of the top bucket guys, they only make about 12.5 hp on a dyno (the factory claims 20) but a XR250 carb bolts straight on and gets it up to i think it was 15 hp or similar, so not to bad. the standard tyres on them are absolute bullshit in a racing environment so that would be the first change i would recommend to anyone with on of these :)

oh an bolt the handle bars underneath the top triple clamp so you dont feel like you are riding a chopper :)

[Ivan]

but if you can get the CBR 150 ask RG100!! bout that, if you are serious try getting an aftermarket CDI so it revs higher a new race exhaust and a new carb bucket rules have been opened up to 150 4 stroke now as well


cheers

[Kickaha]

Tony Mac has one (FXR) not sure if he's any faster than on his old Honda, still looks fairly standard though.....

Bog stock standard apart from the rear slick and he's leaving it that way for now

[dangerous]

Tony Mac has one (FXR) not sure if he's any faster than on his old Honda, still looks fairly standard though.....
Ohhh its fast allright but he is a good rider, tell me that isent a fast getaway

[thealmightytaco]

Cheers guys, much more helpful than that dude on trademe, he's a total used car salesman. But yeah, current plan is to strip all fairings and maybe put on a smaller plastic fuel tank, put on good tyres, do all the things on Frosty's link and do it to it. Then if the handle bars piss me off I'll swap them over the triple clamp too, but I'll test that.

But this avo, being a mechanical engineer whos' recently befriended a hog ridin' welder by trade, thought I might look at designing a whole new frame and put the engine, tyres, spring and forks into it. Then there's no chance of me devaluing the FXR with crashes, bar rupturing the engine of course, and it'd be a total homemade bucket. With a sweet engine.

[froggyfrenchman]

be real careful when you build your own frame... there is 1457655500000000 diferent ways to go wrong there.

[texmo]

when you gonna race taco?

[thealmightytaco]

As soon as tex but I don't the next amcc meeting is till next year now init? And I'm not worried about that froggy, gotta start somewhere. And there's bound to be a book on it, I know how roll centres for cars work, not sure what the equivalent is on a bike but I'll get some reading done and find out.

[Buddha#81]

But when that homemade frame works think of the grin factor.

[dangerous]

Bike: honda bucket
Location: christchurch
Posts: 1
But when that homemade frame works think of the grin factor.
Who the fuk are you then? :2thumbsup bet ya bike is slow, mind you it wont blow up like Kickaha's does cos its a Honda.... having said that I hear it puts ya on your arse quite well..... like last w/e :spudbn:

Welcom to KB spud

[Sketchy_Racer]

reffering to the pic before of the fxr start,

they can get a really good start off the line because they have a very low first gear and a lot of torque but after about third gear on a standard i was getting toasted down the straight.

they are not the perfect bucket ( a honda CBR150RR from tailand fills that gap) but pretty damn close IMO

[Buddha#81]

i think you know who i am Dangerous. yes i did spend some time on my arse last weekend only to test the the new leathers are up to the task:doh: . Now they look like real race leathers. Four stroke honda singles all the way, although a FXR could be on the cards, waiting to see how Tony's goes next season.

[Kickaha]

Who the fuk are you then?

He's one of the other guys who has kicked your arse all season :finger:

[gav]

Like that narrows it down..........:shake:

[Buddha#81]

I rode a stock fxr on the road today, they dont seem to fast but its hard to tell dodging cars on a busy street. It only seemed to produce power after 9k. Must admit it would be my choice of rides for 2hr endurance races:2thumbsup . Your being abit harsh on Dangerous,:bash: Gav that only means i could be one of 10-15 riders. Im thinking of posting a photo of the back of me and my bike for a clue (it would have to be a small photo though):shake: .

[dangerous]

Im thinking of posting a photo of the back of me and my bike for a clue (it would have to be a small photo though):shake: .
Hey... I'll save ya the trouble

pic: 1 Spud Racer draging the chain behind Dangerous & K14
pic: 2 Ohhhh would ya look at that Dangerous still out the frount, K14 slacking of a bit tho geee stanko's even ahead of him
pic: 3 well at least ya in frount of ya big bro....... hey weres Kickaha?
pic: 4 Ohhhh there he is :2thumbsup

[thealmightytaco]

Damn that looks like fun.

Conceptual development on the frame has begun, cause I'm bored, but it's movin' pretty slowly because I have nothing to measure the FXR bits with just now. In a week or so though I should have somethin' worthy of construction, prime for moving all the FXR parts onto. Watch this space.

[Buddha#81]

yeah i know how you computa types can doctor photos. I must be lapping you guys. That is the only worry suzuki 4 stroke motors dont seem to finish any races in chch, maybe the FXR rev limiter is the holy grail.???

[ajturbo]

you wankers.....:bash:

if this new contrat does not arrive, looks like i may have to move down ......

[thealmightytaco]

I'll never fit all 2 & 3/4 of these bikes at my house now, have to move by end of the month I'm told cause owner is moving back to NZ, and going to a smaller venue. So thinking I'll sell the NSR, keep it's seized engine (only seized one cylinder though) and see if I can do something with that, sleeve down to 100cc I'm told, and just a few frame mods. Or there's an AR50 on trademe that looks like fun.

[Kickaha]

yeah i know how you computa types can doctor photos. I must be lapping you guys. That is the only worry suzuki 4 stroke motors dont seem to finish any races in chch, maybe the FXR rev limiter is the holy grail.???

You need the FXR to improve your power to weight ratio

The next generation of 4 stroke Suzuki is already on the drawing board (we know what the last problem was) and this will finish races without blowing up and in front of your Honda :finger:

[dangerous]

this will finish races without blowing up and in front of your Honda :finger:
AHHHHHHHHHHHHHhhhh HAHAHAAAAAAAAAAAaa................. Ya hear that spud racer.... the old boy is becomming deluded, what ever next.... dont tell me he will be riding that zookie :lol:

[diesel pig]

Kickaha will lick your arse... I mean kick your arse Dangerous

[thealmightytaco]

Total thread hijack. Not that I mind.

Changed my mind though, gonna sell the FXR instead, the NSR is too fast and coo'. Then buy some other cheap sac while I slowly build up the extreme custom NSR100.

Total.

[Sketchy_Racer]

Custom ehh???? that sounds like fun.

You will have to keep us posted about the 'mods' you do to it ;)

[Buddha#81]

Kickaha's engine rebuilds are like talk CHEAP. At least the next sub standard Suzuki rebuild is using Honda quality parts that my friend is a large step in the correct direction away from the darkside, we can teach you the way of the Jedi. If all else fails Dangerous can come to the rescue AGAIN.

[Buddha#81]

Custom nsr100 sounds like something that OCC off Discovery channel would knock up (high bars and fwd controls). Sorry about the thread hijack but some things just need to be told.

[dangerous]

Total thread hijack. Not that I mind.
Course ya dont, Yesterday I raced both my buckets against a top rider on a FXR.
1st my worked MB in a home built replica..... well down the straights the FXR still pulled away but slowly, I was clocked at 140-150k, but I cought up in the corners providing I dident stuf a gear change up.
2nd my CB125T... this race it was wetish so the FXR rider backed off alowing me to pass several times CB top speed 130-140k now on a dry track I'd say the FRX would blitz me, but due to good handling I'd do ok in the tight shit.


If all else fails Dangerous can come to the rescue AGAIN.
And remind me why I do that again.... after all the shit I get from him :slap: ohhh thats right so I can rub it in that not even he can root a Honda :lol:

[Kickaha]

If all else fails Dangerous can come to the rescue AGAIN.

Fuck him I've got new friends now who lend me bikes, Hi Stanko:2thumbsup




And remind me why I do that again.... after all the shit I get from him :slap: ohhh thats right so I can rub it in that not even he can root a Honda :lol:


Bet I fucking can, I just haven't tried hard enough yet :finger:

[thealmightytaco]

Hey lads, anyone know of a ruling against using "competition engine parts?" Asking around about suitable pistons for the NSR100 project guy seemed to think there might be a ruling against using a competition specific piston, I can't see why there would be but if anyone knows or can tell me where the rules are in that monstrous bloody MNZ rulebook, let me know. Cheers.

[gav]

No, you can't use competition engine parts! Otherwise you could build something like this and and heres a NSR100 for ya to work towards!
The forst is a CR80 in a RS125 rolling chassis, the other is a Jap spec NS80 witha 100cc big bore kit.

[thealmightytaco]

Chapter 24. Lookin' at the amendments first is a good idea. And "engines must be derived from non-competition engines" but there's "no restriction on the make, type or design of carburettor, ignition, exhaust, piston, cam, valve springs or cooling system except for class eligibility."

So I think the piston is okay, but is the NSR a non-competition engine? I'll email MNZ.

[Sketchy_Racer]

yes the nsr engine is a competition engine???? i think it is.

but i also think that if you modify it to a 100cc it wont count anymore,

saying this i dont 'know' but im pretty sure(ish) :)

[Bert]

No, you can't use competition engine parts! Otherwise you could build something like this and and heres a NSR100 for ya to work towards!
The forst is a CR80 in a RS125 rolling chassis, the other is a Jap spec NS80 witha 100cc big bore kit.

Now won't that be a great race class, 80cc MX's and a race frame. - They race them over in the UK (young'in - up to 17) - maybe we could drop the two stroke limit to 85cc vs the 4's at 150. - now that MX parts are soooo cheep.

[Sketchy_Racer]

Now won't that be a great race class, 80cc MX's and a race frame. - They race them over in the UK (young'in - up to 17) - maybe we could drop the two stroke limit to 85cc vs the 4's at 150. - now that MX parts are soooo cheep.


yea they should allow 85cc mx bike engines, but, thay have to be stock standard not modified :) that would be very cool. Make it alot easier to get a compeditive engine in the racing without having to spend lots of money and time to make an old one go fast :)

[thealmightytaco]

yes the nsr engine is a competition engine???? i think it is.

but i also think that if you modify it to a 100cc it wont count anymore,

saying this i dont 'know' but im pretty sure(ish) :)

Yeah that's what I thought RG. Have emailed MNZ, waiting for reply, but I think plans may have to take yet another drastic change.

Anyone got a CB125 they wanna offload?

[Sketchy_Racer]

shessh taco!! you change your mind worse than a woman!! but if you do build a bucket i would use the NSR frame, it would handle quite well.
From what i hear, they run the same geometry as a CBR 250 of the similar year, and they handle really well :) good luck tho

[thealmightytaco]

shessh taco!! you change your mind worse than a woman!!

Hey man, it's conceptual development stages here, I can do what I wants. Wont buy anything for sure till there are definitive ruling though, cause the NSR100 would be sweet, though a touch heavy with all that extra unused chassis and gearbox potential.

[geoffm]

Damn that looks like fun.

Conceptual development on the frame has begun, cause I'm bored, but it's movin' pretty slowly because I have nothing to measure the FXR bits with just now. In a week or so though I should have somethin' worthy of construction, prime for moving all the FXR parts onto. Watch this space.

You be wanting to join the Motorcycle Chassis mailing list then, and pick the brains of the likes of Tony Foale. Have a look at Michael Moore's Eurospares site.
You will also be wanting to buy/ borrow Foale and Willoby's book on Chassis design, not to mention Tony Foale's new chassis book and CD with design proggies in it. John Robinson's book is also worth a read.
Mine are out on loan to someone else at present, but you might be able to get it through the library.
Have a play with a 3D frame analysis program. I played with MultiFrame years ago on a bike chassis. It makes interesting experimenting. I think there might be free/ demo versions around which will do the job.
Geoff

[thealmightytaco]

Awesome, I'll them up, the books and the program. Cheers geoff.

[Sketchy_Racer]

Hey man, it's conceptual development stages here, I can do what I wants. .

lol, Fair enough, the more development that goes into something, generally the better it comes out once built :) :banana:

[Kickaha]

You will also be wanting to buy/ borrow Foale and Willoby's book on Chassis design, not to mention Tony Foale's new chassis book and CD with design proggies in it.

Is this an updated version of the old book? and how much extra stuff is in it?

[gav]

Is this an updated version of the old book? and how much extra stuff is in it?
I think its engine's you need to work on, not chassis' :bleh: :finger:

[Kickaha]

I think its engine's you need to work on, not chassis' :bleh: :finger:

Already sorted, or at least it will be by the time the series starts again
We know what the problem was and how to fix it :yes:

[gav]

Already sorted, or at least it will be by the time the series starts again
We know what the problem was and how to fix it :yes:

I see, so theres two possibilities:
1. You've left it standard
2. Someone else has done the motor work.
:whistle: :msn-wink:

[diesel pig]

I see, so theres two possibilities:
1. You've left it standard
2. Someone else has done the motor work.
:whistle: :msn-wink:

Neither so he's fucked:killingme

[thealmightytaco]

Right, it's goin' top secret underground for a while, so a) you don't know what I'm doin', b) so I don't fill the forums with uselessness, not that that's not gonna happen elsewhere anyway, and c) cause nothings really happening and wont do for a while.

But I got a Suzuki GT125 off trademe for $166, havent seen it yet and it hasn't been started in 5 years but I'll make it do something, hopefully though I can just put sticky rubber on and be away till the NSR100 is goin'.

Watch out for it!