Primary clutch exploded

[NYTurbo]

I will quit being so Yamaha when u doo & cat lovers acknowledge you ride a Yamaha because they are the best ... lol

Lol.

 

[Mototown]

There is more to this story than just a picture with a piece of the cover cracking. Who's to say that owner, or whoever put that clutch together, didn't bolt it down crooked and crack that cover on install? Again, too many unanswered questions. If the towers were to spread, all three or six would look like that and the bolts in the cover would be bent as well. I just don't see that happening from running. They would ALL be doing this, and they they are not. Somethings amiss here.

If that cover is tightened properly and bolts torqued correctly on install, I don't see this happening to the Team from running. I'll find out shortly as I'll be trying one myself.

Why are you so against the Team? Reports or pictures of them blowing are non-existant on HCS for the 998. I have a post where I asked about it as well and no one has replied with broken covers or blown clutches.
I agree but u can say the same for Yamaha what did the owner do or didn’t do for the clutch to break . Check & and change rollers most of Yamahas clutch problems go away




Hello! These things are Cats, not Yamahas. You're riding an Arctic Cat with a Yamaha engine in it and Yamaha decals on it!

yes , but I can bet u probably only here because of Yamaha s motor

I agree but u can say the same for Yamaha what did the owner do or didn’t do for the clutch to break . Check & and change rollers most of Yamahas clutch problems go away

 

[KnappAttack]

yes , but I can bet u probably only here because of Yamaha s motor

Actually not. Although it is better than the old Twin Suzuki that was in the Cat chassis earlier, Its not as good as the 1200 Rotax for boost, nor is it as good as the Apex engine. I'm only on the thing for its ride and handling. IMO the 998 is nothing special, I'd take a 1200 Rotax or a Apex for a turbo poweplant any day of the week.

 

[Crossfire12]

I will quit being so Yamaha when u doo & cat lovers acknowledge you ride a Yamaha because they are the best ... lol

It’s good to see that Yamaha finally put a motor in a arctic cat, and arctic cat put a chassis around a motor for Yamaha because Yamaha could never make a sled ,just a motorcycle engine , then they tried to make a chassis around it RX1, apex, now you have a sled. Just different colors ,and by the way ac didn’t make the clutchyamaha clutch

 

[ClutchMaster]

It’s good to see that Yamaha finally put a motor in a arctic cat, and arctic cat put a chassis around a motor for Yamaha because Yamaha could never make a sled ,just a motorcycle engine , then they tried to make a chassis around it RX1, apex, now you have a sled. Just different colors ,and by the way ac didn’t make the clutchyamaha clutch

^^^^^^^^
This is classic....... Yamaha has had the best clutching in the industry for years period, no other manufacturer even comes close. Arctic Cat clutching/clutches have had many more issues over the years. Sidewinder is the first yamaha sled with any real clutch issues, most of it because people are putting huge power tunes in them.

Over the years other manufacturers have been way behind Yamaha on their clutching. They have finally caught up and have decent trail
friendly clutching, but has taken them way to long.

As far as building a chassis, well it might handle fairly well but I have never owned a sled with so many stupid issues. Seems like I’m continually fixing stuff on the chassis, AC has horrible reliability....always has, always will.

They can’t build a decent motor so they had Yamaha do it for them. M2C

So put your machine gun away.

 

[ROCKERDAN]

Being OCD sucks.....hard to sleep with images of blown clutches in my head...LOL

So this AM made a couple calls, PMs and posts....got some info here. Not that Im jumping ship already as mine has barely been used this season so far, lots more miles coming up soon though.

It does seem for 270+ tunes to get longevity and peace of mine, the one way to go is to go aftermarket. I believe belt life from what im reading and hearing comes along with these clutches as well. Currently the STM is not doing well in comparison to the Pro4 and the TAPP, so I dug deeper into these two.

TAPP($1350 us) costs more then Pro4 3 arm($1195 us).

Pro4 is a 3 arm Billet clutch(not 4) that uses a comet style design flyweight, which allows for use of our current YAM/Dalton weights. Pro4 3 arm uses a TRA spring.

TAPP is a 4 arm Billet clutch, which is a TRA design more or less...it uses ramps and arms, and has Clickers like a TRA which is handy for tunes, and also has ramps that can be turned around for diff profile. TAPP has been tested/run for some of the best reviews on BIG BOOST turbo 1200 doos over several seasons. TAPP uses the 8DN YAM belt(from Japan) and Dave at powder lites is impressed with this belt and the longevity these highly boosted doos are getting from them. TAPP does not need anything for 10,000 miles, and some are over 20,000 miles with no wear.

Really hard to deny the TAPP. And while the Pro4 3 arm may be a great billet clutch, I think the price point of $1195 for an EMPTY clutch is not as good as a fully loaded TAPP for just $155 more.

I think going this route is eventually what most tuned guys will need to do, if they want to keep a tuned 998 around for many seasons/miles. I like the idea of keeping this clutch from one sled to the next, if/when you trade up. Removing the stocker before it wears out/explodes and selling sled stock.

Just more info for us all to consider as miles pile onto our Winders.

Dan

 

[snowbeast]

There was someone last year from this site that sent me pics of his clutch letting go...all stock. Then I believe @snowbeast had a clutch that was cracked....don't remember if stock or flashed.

(Not trying to throw you under the bus Snowbeast...just trying to keep info correct)

That's ok,but my stock 17 primary clutch is still ok,ido need to get back up to camp where it now is,and remove it,check it over completely,looking for stress and crack areas.

 

[journeyman]

That's ok,but my stock 17 primary clutch is still ok,ido need to get back up to camp where it now is,and remove it,check it over completely,looking for stress and crack areas.

Gotta do the same on my new machine. The original owner lived in the UP of Michigan, was 67 years old and an easy rider. He had the updated Yamaha rollers installed at the dealer but the sled has 4400 miles.....no blown belts yet. I want to go through the clutches before I leave to Michigan in a month for my annual week long trip.

 

[ClutchMaster]

Being OCD sucks.....hard to sleep with images of blown clutches in my head...LOL

So this AM made a couple calls, PMs and posts....got some info here. Not that Im jumping ship already as mine has barely been used this season so far, lots more miles coming up soon though.

It does seem for 270+ tunes to get longevity and peace of mine, the one way to go is to go aftermarket. I believe belt life from what im reading and hearing comes along with these clutches as well. Currently the STM is not doing well in comparison to the Pro4 and the TAPP, so I dug deeper into these two.

TAPP($1350 us) costs more then Pro4 3 arm($1195 us).

Pro4 is a 3 arm Billet clutch(not 4) that uses a comet style design flyweight, which allows for use of our current YAM/Dalton weights. Pro4 3 arm uses a TRA spring.

TAPP is a 4 arm Billet clutch, which is a TRA design more or less...it uses ramps and arms, and has Clickers like a TRA which is handy for tunes, and also has ramps that can be turned around for diff profile. TAPP has been tested/run for some of the best reviews on BIG BOOST turbo 1200 doos over several seasons. TAPP uses the 8DN YAM belt(from Japan) and Dave at powder lites is impressed with this belt and the longevity these highly boosted doos are getting from them. TAPP does not need anything for 10,000 miles, and some are over 20,000 miles with no wear.

Really hard to deny the TAPP. And while the Pro4 3 arm may be a great billet clutch, I think the price point of $1195 for an EMPTY clutch is not as good as a fully loaded TAPP for just $155 more.

I think going this route is eventually what most tuned guys will need to do, if they want to keep a tuned 998 around for many seasons/miles. I like the idea of keeping this clutch from one sled to the next, if/when you trade up. Removing the stocker before it wears out/explodes and selling sled stock.

Just more info for us all to consider as miles pile onto our Winders.

Dan

Dan I’m not sure where your getting your information that STM clutches aren’t doing well?
You can get the 3 arm tied tower clutch for $1075 empty, take your yamaha weights and throw them in, or any other weights you wish to run for that matter. They will run any style weight you want so your current calibration stays with the clutch. You can run the huge assortment of ski-doo springs available (currently the biggest selection on the market).
It can run any belt width you want by changing a spider shim. The 3 arm clutch can hold 400 horsepower no problem.

Sure if you want to monkey around learning about and paying for ski-doo ramps, arms, pins.

Never being able to run a setup other winders are running/recommending.

Yea go ahead and get the Tapp clutch.

As for the Billet Pro-4 show me a website that has spare parts? I couldn’t even find any info on the web about the details on the Billet
pro-4?

STM is clearly my choice for all of the above reasons

 

[BlueByYou2000]

I just looked at mine. 1200 miles. First 1000 was with EVO stage 4 tune, 265ish HP. Last 200 miles have been Precision Stage 3, 280ish HP. All 3 rollers look good and have just a tiny bit of slop, not any more than any of my Apex turbos. I run STM weights. All 3 feel exactly the same and washers look good. How tight are the rollers when installed brand new on the pin?

I should add, ive never held this sled wide open for anything longer than 1000 feet or so, the race is long over by then. Which make me wonder and think alot of these issues are coming from guys who are top of end freaks and holding these WOT for further distances than I am. They run out of gear and stay in the throttle. Imagine the forces that creates.

 

[WVTurboLTX]

Dan I’m not sure where your getting your information that STM clutches aren’t doing well?
You can get the 3 arm tied tower clutch for $1075 empty, take your yamaha weights and throw them in, or any other weights you wish to run for that matter. They will run any style weight you want so your current calibration stays with the clutch. You can run the huge assortment of ski-doo springs available (currently the biggest selection on the market).
It can run any belt width you want by changing a spider shim. The 3 arm clutch can hold 400 horsepower no problem.

Sure if you want to monkey around learning about and paying for ski-doo ramps, arms, pins.

Never being able to run a setup other winders are running/recommending.

Yea go ahead and get the Tapp clutch.

As for the Billet Pro-4 show me a website that has spare parts? I couldn’t even find any info on the web about the details on the Billet
pro-4?

STM is clearly my choice for all of the above reasons

 

[WVTurboLTX]

Sounds like there have been some issues They are aware of.

 

[Thunder Products]

As for the Billet Pro-4 show me a website that has spare parts? I couldn’t even find any info on the web about the details on the Billet
pro-4?

Pro 4 Performance does not have a website. He has a facebook page. Also, not a vendor but is looking to be a vendor here.

 

[snowbeast]

Gotta do the same on my new machine. The original owner lived in the UP of Michigan, was 67 years old and an easy rider. He had the updated Yamaha rollers installed at the dealer but the sled has 4400 miles.....no blown belts yet. I want to go through the clutches before I leave to Michigan in a month for my annual week long trip.

Ya,my sled has around 3600 miles now,and when we installed my new track this fall,we did a good check over of every thing except the clutch,go figure.

 

[Crossfire12]

^^^^^^^^
This is classic....... Yamaha has had the best clutching in the industry for years period, no other manufacturer even comes close. Arctic Cat clutching/clutches have had many more issues over the years. Sidewinder is the first yamaha sled with any real clutch issues, most of it because people are putting huge power tunes in them.

Over the years other manufacturers have been way behind Yamaha on their clutching. They have finally caught up and have decent trail
friendly clutching, but has taken them way to long.

As far as building a chassis, well it might handle fairly well but I have never owned a sled with so many stupid issues. Seems like I’m continually fixing stuff on the chassis, AC has horrible reliability....always has, always will.

They can’t build a decent motor so they had Yamaha do it for them. M2C

So put your machine gun away.

No disrespect ,but that was then this is now they are made in thief river falls. I used to run a Suzuki