Cat Belt

[newtayami]

Has anyone shimmed and ran a 112 Cat belt on the Yamaha clutches?
I beat the tar out of 112 belts on my 18psi boosted ZR 998.
Other options I am thinking is Cat Primary with stock Yamaha driven, but not too sure if the tapers are different?
Cat Primary with Pro4 driven is another option.....as well as Yamaha primary with Pro4 driven.
Trying not to change the JS to Cat spline.

 

[KnappAttack]

I have a new Team 998 primary sitting here to try along with the Cat belt, but haven’t sized it up yet. I’m sure it will work just fine on the Yamaha secondary, but I honestly think the root cause of the Yamaha belt failures is the secondary alignment and secondary float.

Get it lined up per Hurricane bar and get rid of the float and it will no longer pop belts at will. Few guys have done this and have had no more belt failures. I and many just need snow to test for ourselves.

 

[Crossfire12]

STM secondary !

 

[newtayami]

No thanks....I have a Pro4 on my cat 998.

 

[Crossfire12]

No thanks....I have a Pro4 on my cat 998.

How’s the belts holding up, I hammer mine for a thousand miles belt still looks new.

 

[newtayami]

No issue on Race 30psi and 18psi on the trail.

 

[rxwhopper]

I have a new Team 998 primary sitting here to try along with the Cat belt, but haven’t sized it up yet. I’m sure it will work just fine on the Yamaha secondary, but I honestly think the root cause of the Yamaha belt failures is the secondary alignment and secondary float.

Get it lined up per Hurricane bar and get rid of the float and it will no longer pop belts at will. Few guys have done this and have had no more belt failures. I and many just need snow to test for ourselves.

wondering what you mean by float? thought the new roller was fixed? i put a viper secondary that floats on mine never had a belt issue since. thought maybe the float was good

 

[ROCKERDAN]

Im giving mine this season with the new changes first. Im hoping for good results.

Agree with Mike, and I will slap a TEAM Primary on if need be(likely next season) with the stock secondary. Most Cat 998s who run a tune are going with Ron's Torsional secondary. I have measured(approx) Diameters of Cat vs Yam secondaries, and the YAM is larger by approx 1/4 to 3/8" inch. Looking at a new cat next to a winder, the cat belt sits above their secondary with its auto-deflection. So IMO the 112 belt will sit about perfect(as its a tad longer and obviously wider At 1.5") in the stock YAM secondary. But it will come down to mock-up and testing to get the correct offset, Id still aim for 1 to 1 but would like to check cat's bar and spec them out to compare.

It might be a good upgrade anyway, hearing/seeing more and more 998 YAM primarys that are getting rattled so hard things are getting bad, pins/rollers getting hammered and holes are becoming out of round. Seems the TEAM is near quiet, so maybe they will hold up longer? Time will tell.

Dan

 

[WVTurboLTX]

The roller secondary floats once the belt engages. With this much power, the thought is, the shafts could torque slightly under heavy load, clutch slides all the way out, stays there through the shift then is way out of alignment at full shift causing the belt to blow. I machined mine based on Dave's tool and am going to lock it down and see what happens.

 

[WVTurboLTX]

I used to float my secondarys on the original rev chassis and it helped belt life, it wore out the inner hub on the clutch every 4000 miles though. It worked with 150 hp but with this much torque and HP its a different game.

 

[newtayami]

Im giving mine this season with the new changes first. Im hoping for good results.

Agree with Mike, and I will slap a TEAM Primary on if need be(likely next season) with the stock secondary. Most Cat 998s who run a tune are going with Ron's Torsional secondary. I have measured(approx) Diameters of Cat vs Yam secondaries, and the YAM is larger by approx 1/4 to 3/8" inch. Looking at a new cat next to a winder, the cat belt sits above their secondary with its auto-deflection. So IMO the 112 belt will sit about perfect(as its a tad longer and obviously wider At 1.5") in the stock YAM secondary. But it will come down to mock-up and testing to get the correct offset, Id still aim for 1 to 1 but would like to check cat's bar and spec them out to compare.

It might be a good upgrade anyway, hearing/seeing more and more 998 YAM primarys that are getting rattled so hard things are getting bad, pins/rollers getting hammered and holes are becoming out of round. Seems the TEAM is near quiet, so maybe they will hold up longer? Time will tell.

Dan

Hi Dan
I am a Cat guy we have 3 998 Cats....we run Team clutches 112 belt and my 17 Cat also has Ronnies torsional (good friend and racing colleague for 20 years). We trail ride very hard, on 17-18 psi all day...and the Cat clutches work...I also have a Pro4 secondary on another with Team Primary...also a very troublefree set up. This is my first Yamaha because I wanted a 141 (144 hacksaw). The Teams primary its important to break it down and clearance and index them all, some are so tight from the factory you can even push it down the towers with no spring in it. Also there is a problem with the runout on some of them on the fixed sheave so something also to check with a dial if you do go the route. However when set up properly they run well....even on 30psi with +100g /tower....Glad I have extra team clutches after reading all this, as well I have another Pro4 driven with the Yam spline to test and try with roller cover.

 

[stevewithOCD]

Hi NEWT. Welcome aboard!
So the Team clutches need a little TLC & dialing in then they run good.
If a guy just buys a Cat & rides it, what kind of problems & belt life can he expect hard trail riding?

 

[newtayami]

Hi NEWT. Welcome aboard!
So the Team clutches need a little TLC & dialing in then they run good.
If a guy just buys a Cat & rides it, what kind of problems & belt life can he expect hard trail riding?

Stock or flashed?

 

[stevewithOCD]

Just a plain 'ol blue collar guy that hops on his stock sled & rides & doesn't do anything until it breaks.

 

[BTP]

I have not had an issue with my Team clutches and belt life on the 270 / 290R tunes. I run Ron's kit as well with various versions of weights. I run the clutches out of box other than weights and springs. I have three setups I run depending on trail or drag race on lake.