Team tss-04

[Doowithblue]

Anyone tried a team on their winder? Wondering if offset would be close or dooable. Perhaps a 160-240 or 160-260 with a straight 44 just to start things off simple. One thing I learned from testing one a while back is you don't need giant springs and the delryn washers are a must to prevent spring bind.

 

[ROCKERDAN]

I was sorta thinking the opposite(but similarly)

I was wondering about going to the team primary, keeping stock secondary. And hoping then to be able to run the CAT belt. I think many of us are going to be trying some new approach for belt life.

I just keep talking to more and more cat owners, and my dealer who sells both brands....who has basically NO CAT belt woes, and MANY winder belt woes. Grrrr

Dan

 

[**sj**]

I was sorta thinking the opposite(but similarly)

I was wondering about going to the team primary, keeping stock secondary. And hoping then to be able to run the CAT belt. I think many of us are going to be trying some new approach for belt life.

I just keep talking to more and more cat owners, and my dealer who sells both brands....who has basically NO CAT belt woes, and MANY winder belt woes. Grrrr

Dan

Ya might be the 24-50 gearing ....also might want to check the belt and sheave angles to see if they match up (I bet no)

 

[ROCKERDAN]

Ya might be the 24-50 gearing ....also might want to check the belt and sheave angles to see if they match up (I bet no)

I agree the gearing likely plays into things. Im going back to stock 21/41 for sure.

I would like to be able to run their belt though.

Just wondering, do guys who run STM clutches cure belt issues?

It just does not seem to be one issue to fix, it seems like its a combination of clutch,belt,gears ect ect....and Cat maybe knew more about all this going into the 998 with all their turbo/belt history.

 

[Beerman]

Just wondering, do guys who run STM clutches cure belt issues?

Dan, I had the same question and asked this of a knowledgable turbo Yamaha owner that runs STM clutches - his answer "STM clutches by themselves won't make a difference in belt life - it's still about component combination, parallel, c-to-c and offset."

 

[74Nitro]

I agree the gearing likely plays into things. Im going back to stock 21/41 for sure.

I would like to be able to run their belt though.

Just wondering, do guys who run STM clutches cure belt issues?

It just does not seem to be one issue to fix, it seems like its a combination of clutch,belt,gears ect ect....and Cat maybe knew more about all this going into the 998 with all their turbo/belt history.

Dan, when I grassed dragged many years ago we used Bender split collars, which basically move the stationary sheave over towards the engine. There were a few different thickness's. Don't know if they are available anymore, maybe hauck makes them too. This would allow the wider belt if the right thickness is available. However, the Winder sheaves run less angle than the primary on the Cat I would think. The other Yammie clutches are 14.5 degrees, not sure what the Winder is, maybe 13-13.5

 

[1100saber]

I was sorta thinking the opposite(but similarly)

I was wondering about going to the team primary, keeping stock secondary. And hoping then to be able to run the CAT belt. I think many of us are going to be trying some new approach for belt life.

I just keep talking to more and more cat owners, and my dealer who sells both brands....who has basically NO CAT belt woes, and MANY winder belt woes. Grrrr

Dan

FWIW many of the stock cat primaries on the 998 have been shown to be junk. Early ones cracked, updated ones cracking too.... friend of mine chased low boost/rpm for a week. Pressure test system, swap ecu, map sensor, check turbo, etc etc. We both thought low rpm caused by low boost. Turns out low rpm was causing low boost. They newly replaced updated cat primary was binding horribly. Swapping clutches is what found that.

 

[snowbeast]

Dan, when I grassed dragged many years ago we used Bender split collars, which basically move the stationary sheave over towards the engine. There were a few different thickness's. Don't know if they are available anymore, maybe hauck makes them too. This would allow the wider belt if the right thickness is available. However, the Winder sheaves run less angle than the primary on the Cat I would think. The other Yammie clutches are 14.5 degrees, not sure what the Winder is, maybe 13-13.5

The new Yamaha primary does not have a screw in and out spider,and also nomore split rings,the now solid none movable sheeve,is like poo primary now,not like the old style Yamaha primaries were.

 

[74Nitro]

The new Yamaha primary does not have a screw in and out spider,and also nomore split rings,the now solid none movable sheeve,is like poo primary now,not like the old style Yamaha primaries were.

Snowbeast, thanks for that, I hadn't attempted to pull one apart yet.

 

[**sj**]

pete the sw primary spider does spin on...and is shimmed...the shim is a spider only shim...however...a post and spider shim could be made to change belt spacing...in fact Id bet STM has one...

this setup is very like a Cat shimmed primary..

how do I know...I have had many cat primaries and now SW primaries apart..

 

[snowbeast]

pete the sw primary spider does spin on...and is shimmed...the shim is a spider only shim...however...a post and spider shim could be made to change belt spacing...in fact Id bet STM has one...

this setup is very like a Cat shimmed primary..

how do I know...I have had many cat primaries and now SW primaries apart..

stev,the fish shows it solid,in any of 2017 SW and up,but the apex still shows them like you stated,and I have spun a few off myself to. But if you already took your 2017 clutch and spun off your center spider out of the solid inside sheeve,than at least yours came that way. But on every fish I have seen,none are adjustable,with split washers.

 

[snowbeast]

Hi again SJ (steve) any and all microfish I look up,for any sidewinder weather it be Babbits,or Port Yamaha,all show only solid sheave,and not threaded in like the ape. P/N is 8kc-17610-00-00 and if you go to apex fish,it shows it only how all apes used to scew into,the sheave,that locates onto the crank.

 

[sideshowBob]

stev,the fish shows it solid,in any of 2017 SW and up,but the apex still shows them like you stated,and I have spun a few off myself to. But if you already took your 2017 clutch and spun off your center spider out of the solid inside sheeve,than at least yours came that way. But on every fish I have seen,none are adjustable,with split washers.

Begs the obvious question...will an Apex primary fit on the SW?
Could be the beginning of one possible solution to belt issues....floating the secondary would also be a big improvement.

 

[**sj**]

yes and yes...Ive done a 17' and 18' clutch....have the grunt tool to disassemble and reassemble...

maybe they've changed again...but doubt it..

the apex clutch does fit...however is no sort of fix...as the problem is with the firing order/harmonics of the motor...and the stub output shaft....that motor hammers anything that is bolted to it!

the secondary already floats with all osp/bop/tp float,adjuster and belt change tools...

 

[Big_Phil]

I agree the gearing likely plays into things. Im going back to stock 21/41 for sure.

I would like to be able to run their belt though.

Just wondering, do guys who run STM clutches cure belt issues?

It just does not seem to be one issue to fix, it seems like its a combination of clutch,belt,gears ect ect....and Cat maybe knew more about all this going into the 998 with all their turbo/belt history.

Don't do it. There was a post on the sidewinder facebook group about STM primary clutches on these engines. Lots of failures, cracked sheaves etc. STM doesnt warranty clutches either, so when you break it you are SOL.