Snowmobile Racing

This past weekend, we had some issues with our TRA II primary clutches on the 1500 asphalt sled.  We managed to break two of the moveable sheaves.

I am aware of the "race dept." clutches, which are forged.  They are tougher, but the tolerances are different and do not respond quite as well to our application. Plus, those parts are all obsolete / replaced with newer versions. 

My question is:  Is there any interest in a precision billet TRA 2 style primary ? Completely interchangeable with all OEM parts.Would include the fixed half and the moveable half.  Use your gov cup, spring cup cover, hardware, etc.

I think we could get these in hand for around $ 900

Any input ?

I gotta believe you'd sell a bunch of them. At that price especially. Lot's of fast sleds out there still running a TRA. Lanny, the Oliver Brothers, the Big D and Fish show.

I know that a people capable of making them have talked about producing and they have never come through. Patent issue?  I would really like a couple, I know a few racers in Norway and Sweden that would buy them. I cant speak for Lanny, but I am sure he and his crew would use them.

Ya, I've heard of all the different ones "coming", but nothing.

It's a very difficult part to make, requires 3d digitizing and modeling.  i.e. first one is very costly.

I have looked into building these, believe me 900 bucks would be a bargain!  Alot of machining there.....

i will take 3 at 900 keep us posted

Anyone??  I was voted in for two on the 15's

First 10 ordered today.

modeling and tool path is EXPENSIVE.

If you want one of the first 10, please email me.

busa747@yahoo.com

The first one will be done next week.

Very excited about these.  I had no idea how "out of whack" the parts were that we've been using.  So far, price is staying below $ 1000

There are a couple of the first run not yet spoken for.

If you are interested in one of these, please email me ---->  jamie.bellman@bellmanoil.com

The "Tar Biscuit", the "Mystery Machine", or the "Rinker Rocket"?  What 15 is getting tested first??????

dont the tra 2's have the small shafts

I have twisted off a couple at the spline

havent you ever twisted one off

the newer tra's have a much bigger shaft

I have not ever twisted one of these shafts, but I've only ran around 320 hp.

Not sure on the differences in dimensions between these and the newer stuff.  I do know these work pretty well drag racing and I do not like the press together clutches. (like the TRA 5)

Are these clutches with the old style 1:10 30 mm taper or the new .75:1 taper?

I don't know the technical terms on the tapers.

Most will be for the 3 cylinder 809 tapers and a few will be the smaller tapers (like the 583 twin).

Hope that makes sense ?

They would be the 1:10 30mm taper. I would like at least one, and as soon as I talk to the boys over seas maybe a few more.

jamie, will pass on info to the boys around here... if we still ran doo would take one TQ

Jamie Bellman:

Ya, I've heard of all the different ones "coming", but nothing.

It's a very difficult part to make, requires 3d digitizing and modeling.  i.e. first one is very costly.

We're using solid works for this one.  Didn't realize that is what you did Frank.  That is some cool stuff for sure.