Wrist pin bearings

[Yow Ling]

Any help apreciated.
For a two stroke engine, longish story the bottom end im using has a 22mm pin, 105 long rod , and a 19mm OD for the small end. The piston has a 14mm pin, i can find 18mm x 14 no problem but 19 14 are a bit harder to find. Do they exist? 19 x 15 and 20 x 15 are both available.

Worst case is having to bore the piston to 15mm, not realy what I want to do

[T.W.R]

Timken bearing product list

http://www.timken.com/en-us/products/bearings/productlist/Pages/default.aspx

NSK bearing application list

http://www.google.co.nz/url?q=http://www.jp.nsk.com/app02/BearingGuide/html/bearing.html&sa=X&ei=OLYITICyNoK8M7CllLYE&ved=0CCUQ0gIoATAA&usg=AFQjCNGYwfeG43qtNIv_a34LFacpi5t52w

[Bert]

I ran into the same issue. and ended up opting for boring out the piston to suit the rod and cutting down the wrist pin (not ideal, but a good starting point). also set the clips futher in, so to reduce the potential for things to start falling apart (I'll let you know how it turns out soon)...

I think "Busa pete" came up with another solution...

so, what are you building?

[Yow Ling]

here is link to some stuff about my proposed engine

http://www.fxr150.co.nz/discussion/viewtopic.php?f=6&t=329

Its all suzuki stuff that kinda fits together, bit like that guy Duff up norf has

[Yow Ling]

Got the bearing stuff sorted, Diesel Pig had the answers , h100 rod and bearings

[Bert]

right, well, nice!!!!! I assume that its a RGV barrel?
did you do the sleeve yourself? if so nice job.

It great to see so many two stroke projects coming on...

[Yow Ling]

Wallace at Marshland engineering made the sleeve , marked the ports on it and roughed the ports , i spent a few hours grinding the ports to the mask Wallace etched on thesleeve, the nervy bit was fitting it which went really well. Yea its a RGV250 VJ22 barrell

[Bert]

That's some nice work. I couldn't stomach it and open up the wallet, though I'd be keen to give it a go next time (as you can get some cheapish blank sleeves out of Thailand ~$20 + shipping).

Did you get the power valves working? or are you going to lock them in the "racing position"?

The bridged exhaust port opens up more options.

What's the length of the H100 rods? 110?

[speedpro]

Pro-X are your friends for mixing and matching bearings. I bought the rod kit i wanted and then went through the catalogue till I found the bearing I needed.

I've done that with the RGV barrel on a full crankcase reed conversion TF125 bottom end. Don't try using the standard screwed up combustion chamber shape, weld it up and cut it back to a nice squish into a bowl type of setup. It'll give you instant horsepower and a better spread.

[Yow Ling]

That's some nice work. I couldn't stomach it and open up the wallet, though I'd be keen to give it a go next time (as you can get some cheapish blank sleeves out of Thailand ~$20 + shipping).

Did you get the power valves working? or are you going to lock them in the "racing position"?

The bridged exhaust port opens up more options.

What's the length of the H100 rods? 110?
turns out H100/MB are no good as only 100 long and 15mm small end.

I a going to turn up some plugs to replace the PV's mostly because I dont have pvs, but can look at fitting them later i needed, not sure how effective they would be as they are 4 or 5mm further from the piston face than the std 125cc barrel.

I agree about the bridged port, seems to be the way to go, look inside a rs125 or cr125 or just about anythng thats fast they all have them

[Yow Ling]

Thanks Mike , I had a dummy run at relocating the spark plug in a old head, went alright but had a couple of inclusions or holes in the threaded part so I will have another stab at it before doing a good one. I was thinking I would try to scale a CR125 combustion chamber for my 50mm bore and see how it goes

[Bert]

I've found / modified a neat excel spreadsheet, that does a lot of maths in terms of head design and squish velocities, volumes / shapes etc
PM me you email address and I'll send a copy to you if ya interested ( i cant seem to up load it).

If you destroy your good head let me know (I've got a few sitting around the shed from the bad old days).

[TZ350]

From Bert…and originaly posted on the team ESE thread, some might find these pages useful, when it comes to sizes/product numbers of conrods and bearings etc.:-

http://www.kevinbreedonracing.co.uk/products_conrods.asp
Speedpro, Busa Pete, Bert and Yow Lings new projects are adding a bit of interest to the bucket homebrew scene .........more pictures :soon: please....

[Bert]

Don't forget about wally's 4T twin, F5dave's 100 (if he gets it finished) and I'm sure Bren must have something on the way.

The big question is---> has buckets taken over as the NZ's premiere formula class yet????

[Kickaha]

The big question is---> has buckets taken over as the NZ's premiere formula class yet????

What do you mean yet?

[bucketracer]

Don't forget about wally's 4T twin, F5dave's 100 (if he gets it finished) and I'm sure Bren must have something on the way.

The big question is---> has buckets taken over as the NZ's premiere formula class yet????

I think at Taupo there was the max number of bikes (42?) allowed, more F4 bikes on the grid than any other class????

That bike of Wallys is pretty light and Daves 100 should be quick, great, lots of interesting stuff going on.

Buckets are NZ's premiere formula class, most bang for buck fun anyway.

[Yow Ling]

I think at Taupo there was the max number of bikes (42?) allowed, more F4 bikes on the grid than any other class????

That bike of Wallys is pretty light and Daves 100 should be quick, great, lots of interesting stuff going on.

Buckets are NZ's premiere formula class, most bang for buck fun anyway.

While I was waiting at the BP yesterday for them to finish fixing the oil leak in the Gulf and to finish making my coffee, i went and read their magazines, KR or BRM not sure which, had a story about some CBR150 scheme that somebody has dreamt up. for $500 per round (season) you get to race a CBR150 set up lika race bike . They hope to have 10 starters. Is thi the best marketing thing since tying weed onto a stick ?

Down here thats just bucket racing, doesnt matter how flash you paint them up, they just buckets . Last year we ran a one make / model series over 6 rounds "The FXR Cup" was $5 to enter but you provided your own bike. We wernt to anal on rules , just FXR engine, normal bucket rules apply. They are promoting this CBR stuff as "propper" racing. If the powers that be saw how popular it is to have bukets on big tracks they may be suprised. we had 25 entries in te FXR cup and awarded over $1000 in prizes and money (ok we didnt make any money).

Buckets is a bit like the new sherrif in Blazing saddles, everyone knows its good just not ready to be seen out in public yet

[Henk]

Being a bit of a cynic and all I suspect the reason they don't want buckets at other meets is that it is such a laugh that it may stop people going off and getting "proper" race bikes. Until now in Auckland that hasn't been too much of an issue since you'd have to be a bit retarded to want to ride a bucket round Puke in any case. Hampton Downs however might be another story.

[Kickaha]

Being a bit of a cynic and all I suspect the reason they don't want buckets at other meets is that it is such a laugh that it may stop people going off and getting "proper" race bikes. Until now in Auckland that hasn't been too much of an issue since you'd have to be a bit retarded to want to ride a bucket round Puke in any case. Hampton Downs however might be another story.

It'd be awesome (thats coming from some who doesn't favour large track racing on buckets) except for maybe the climb up the hill onto the start finish straight

[TZ350]

........thats coming from some who doesn't favour large track racing on buckets........

Is that, you don't enjoy riding a Bucket on a large track yourself or you think its wrong to run Buckets on a full track?

In a somewhat retarded moment Team ESE ran a GP125 on methanol and 15% nitro around Puke one track day, Chambers pissed off a few big bikes, overtaking them at both ends of the track, around the sweeper or through the esses and over the hill.

What fun it was.........

[Henk]

No objection to long tracks, just that you'd have time to read a book down the back straight. Not a great fan of puke even on a full sized bike to be honest, but that's just my opinion.

[Bert]

Buckets are NZ's premiere formula class, most bang for buck fun anyway.


Being a bit of a cynic and all I suspect the reason they don't want buckets at other meets is that it is such a laugh that it may stop people going off and getting "proper" race bikes.


.
Buckets is a bit like the new sherrif in Blazing saddles, everyone knows its good just not ready to be seen out in public yet

Given these comments and the large numbers of riders and bikes, why arn't we as a whole working together and making sure we have some representation in MNZ? Not that i want to stiff any active clubs around the country but why hasn't the conversation started about a national body for bucket racing (aka sidecar association)?

anyway back to the CBR150 class thingy thats going on. what a hoot (at lease some more cbr150s being available for buckets in the next few years), I can't really see mum and dads paying 500 at shot for the crazy kids to go racing.
But when i saw it being offered up, i though to myself how many opportunities is this going to open up for buckets in the mainstream sport. the speed differentials between streetstock and a cbr150 is going to be quite large, so are they going to make a new class for them or hang them off the back?? if they are going to leave them in, then why not full the field right up with buckets? we've already seen plenty of embarrassed streetstockers over resent years.

[gav]

Hmm, the CBR150 that runs down here has no problem running at the front of the Streetstock class.

[Kickaha]

Is that, you don't enjoy riding a Bucket on a large track yourself or you think its wrong to run Buckets on a full track? .

A bit of both, although the likes of B track and Taupo short track are ok, Levels is also ok as it really only has 1 decent straight, but the likes of Manfield, Puke and even Teretonga:sleep::zzzz:

[speedpro]

Manfeild is OK on a fast bucket, I've chased Stefan Merriman round there with him on a CR125, great fun. That was the old main track. Even Puke isn't as bad as you'd think, always trying to suck in behind someone and lining them up for the pass under brakes. The sweeper at the end of the front straight was good for getting past the streetstock guys, they'd be scraping and you could ride round them still flat on the tank.

[gatch]

Is that, you don't enjoy riding a Bucket on a large track yourself or you think its wrong to run Buckets on a full track?

In a somewhat retarded moment Team ESE ran a GP125 on methanol and 15% nitro around Puke one track day, Chambers pissed off a few big bikes, overtaking them at both ends of the track, around the sweeper or through the esses and over the hill.

What fun it was.........

Now that would be entertaining.

Did you see much of a performance gain with the nitro blend ?

[husaberg]

I left these off the links in the rules for Husaberg thread
http://http://www.samarin.net/?productos (http://www.samarin.net/?productos)
http://www.pvlsverige.se/vrm/index/index22.html

As you probably have figured out ProX pg51 do one that seems legal for a rod.
not totally sure, but i think the RGV250 is the same ask TZ not sure if available individually though ie without the rest of the crank.


The DR200 I think is a no go. From Memory the FXR150 is a 30mm pin like a Honda.
KTM do a lovely bearing but you can't use that. KTM also do a nice strong rod but can't use that either.
There is a yummy MMC one that weighs only 98 grams as well but you can't use that either.Unless you custom order it then it would be legal?


Anyway I digress here is a nice 37mm big end long rod SR125 in the first list
http://www.mxcomposites.com/con_rod.php
http://www.connectingrod.com.tw/ktm.htm
http://www.pro-x.com/downloads/Technical.pdf
more rods here for the inquisitive types
http://www.kevinbreedonracing.co.uk/products_conrods.asp
http://www.connectingrod.com.tw/honda.htm
http://www.samarin.nl/webshop/index.php?act=viewCat&catId=32
http://www.tkrj.co.jp/
http://findebookee.com/c/connecting-rod the one is capt

Here are some one of them I was going to use for the original stroker xr200.