Bucket development: A few questions for the wise ones

[F5 Dave]

do a search here on GT125 & you'll find workings, or google 'area' or if you must
pi x Dia sq/4 or 2 pi R squared as we learneded at skool.

But yes Mossy is onto the obvious 180deg through a 24mm carb. If you were real keen short manifold into crankcase & vertical reedblock, one side, other side. kewl huh?

[Henk]

When do i ever turn up??

Never in a French maids uniform

[cotswold]

Never in a French maids uniform

I reckon i would be buggered if i did

[Yow Ling]

2 17mm flatslides would do total area same as one 24mm

MVX250 has 3 x 20mm flatslides, you could do some smoke and mirrors to get them to the 17mm carburetion equivalent

Heres a thread on GT125 bucket http://www.fxr150.co.nz/forum/showthread.php?540-gt125 did i mention its over at the world famous FXR150 site ?

[Bert]

Another sideline conversation starter.

http://www.facebook.com/MJworks.racing

I've been follow this guys work on facebook for a while now (actually one of the only reasons for FB other than getting mates to send me motorcycle stuff from around the world).

I've put together an interesting montage of his homemade swingarm (as part of his KTM LC supermono project) for those that don't want to use FB....

Another project for you Crazyman...

[Pumba]

Another sideline conversation starter.

http://www.facebook.com/MJworks.racing

Link was given somewhere else on here a while ago, the whole build has been a thing of beauty. Wish I had the tools/time/money to give building a frame ago.

[Bert]

Yes; I had been warned that ceramic bearings were a waste of time.

and well after ~10 hours of running I now have to agree and will be heading back to Steel mains.... which is a shame really as they did feel so nice.

Last Sunday I ended up on my head in turn two; after the engine decided to lock solid mid turn and sent me skywards...

So here are a few photos of the state of insides.


Luckily no significant damage has been found as yet; and I'm hoping to extract all the ceramic dust out of the motor.

[mossy1200]

thats nasty stuff.

[husaberg]

Yes; I had been warned that ceramic bearings were a waste of time.

and well after ~10 hours of running I now have to agree and will be heading back to Steel mains.... which is a shame really as they did feel so nice.

Last Sunday I ended up on my head in turn two; after the engine decided to lock solid mid turn and sent me skywards...

So here are a few photos of the state of insides.


Luckily no significant damage has been found as yet; and I'm hoping to extract all the ceramic dust out of the motor.

When one of the kids drops a mug i use an er... vacuum cleaner............Too soon....
PS i am resisting the urge and man i am trying.
Shit thats really a mess though bugger, no injuries to you i hope then also you better tell YOW though cause i think he was thinking similar.....

[Yow Ling]

When one of the kids drops a mug i use an er... vacuum cleaner............Too soon....
PS i am resisting the urge and man i am trying.
Shit thats really a mess though bugger, no injuries to you i hope then also you better tell YOW though cause i think he was thinking similar.....

No I wasnt , Im dutch

[Kickaha]

and well after ~10 hours of running I now have to agree and will be heading back to Steel mains.... which is a shame really as they did feel so nice.

Just replace them every 5, problem solved

[husaberg]

No I wasnt , Im dutch

..............? I just wondered when you said this thats all

Bucket racing is affordable , if you have enough money you can afford it.

Bearings !!!!!!!!! Ceramic bearings are made for what ? Industrial purpose I would guess, so they no problem ,

[Bert]

When one of the kids drops a mug i use an er... vacuum cleaner............Too soon....
PS i am resisting the urge and man i am trying.
Shit thats really a mess though bugger, no injuries to you i hope then .....

Feel Free; sort of have to take what ever is dished out really. funny enough I got the vacuum out to clean it up

Luckily, I think that it all collapse at once (coming to a complete stop mid stroke). There was very little signs of ceramics making it past the transfers ports.
There is only a couple of marks on the crank and some very small scoring in the castings and in the barrel;

As for me, other than a four day headache and few bruises not too bad really; wifefy isn't too happy (two outings two crashes)
and the $$ for doctors and to buy new helmet etc (a little hard to hide those purchases)

Just replace them every 5, problem solved

I haven't completely given up on the idea; but there are other easier performance gains to chase first.


But; I do recall Wobby and/or Fits writing about "Cylindrical roller bearing" anyone played with these??

[husaberg]

But; I do recall Wobby and/or Fits writing about "Cylindrical roller bearing" anyone played with these??

NORTON??? Grumph or KICKA will be able to answer that one.

[TZ350]

But; I do recall Wobby and/or Fits writing about "Cylindrical roller bearing" anyone played with these??

We use double row self aligning phenolic caged ball races, been pretty good so far.

Attachment 237977

Phenolic caged main bearings, Koyo 6205 and 6304 FG C4 max rpm in oil 15-17,000.