Stock Winder belt issues - No tuned sleds

[race24x]

I wanted to start a new thread on this. I am hoping to hear fixes for stock HP sleds. What have you done what clutch kits did you add and got rid of your blown belt issues.

500 Miles - Blew 2 belts both at higher speeds on groomed trails when I hit the throttle to accelerate again after slowing down from 100 MPH or up belt disintegrated, blew in half.
Dealer checked the offset, set spring to 6-2, replaced the flat spotted Yami rollers with Cat ones
1350 Miles - Dealer cleaned clutches set spring to 6-1
1444 Miles - Blew belt at about 30Mph on groomed trail hit straight away nailed the throttle belt disintegrated, blew in half
1475 Miles - Dealer set secondary back to 6-2 double checked rollers and offset gave instructions about warming belt up before each ride slowly like breaking in a new belt but not as long. I normally do this but it was because I like to let the engine warm up completely.

 

[ClutchMaster]

I wanted to start a new thread on this. I am hoping to hear fixes for stock HP sleds. What have you done what clutch kits did you add and got rid of your blown belt issues.

500 Miles - Blew 2 belts both at higher speeds on groomed trails when I hit the throttle to accelerate again after slowing down from 100 MPH or up belt disintegrated, blew in half.
Dealer checked the offset, set spring to 6-2, replaced the flat spotted Yami rollers with Cat ones
1350 Miles - Dealer cleaned clutches set spring to 6-1
1444 Miles - Blew belt at about 30Mph on groomed trail hit straight away nailed the throttle belt disintegrated, blew in half
1475 Miles - Dealer set secondary back to 6-2 double checked rollers and offset gave instructions about warming belt up before each ride slowly like breaking in a new belt but not as long. I normally do this but it was because I like to let the engine warm up completely.

Have you checked your alignment?

 

[Keith Schmitz]

I had my stock SE clutches machined, 1600 miles, with no issues. I did also change my helix & rollers. I keep wondering if the model has something to do with it?

If i remember correctly, all the LE’s & longer tracks were delivered first. I got my SE in early December. Could it have been a change they made at the factory?

 

[grubf]

Sounds like a secondary issue. Not backshifting right. When you can it after letting off the massive torque of the fuel injected turbo charged 3 cylinder Japanese monster trys to upshift rapidly but the belt is too low in the secondary. If this was a '72 Chevelle it would be like shifting into 4th gear while going 40 and then revving it up all the way and dropping the clutch. It is in the wrong gear and something has to give. The '72 Chevelle would just go baaaaaaaaaa. But the 200 horse Sidewinder has enough snort to want to try to pull that higher gear. When it can't the weakest link will fail. In this case it is the belt. Your problem is in the secondary.

 

[Soupy]

17 Ltx le here. Always been a belt blower.

 

[ClutchMaster]

Sounds like a secondary issue. Not backshifting right. When you can it after letting off the massive torque of the fuel injected turbo charged 3 cylinder Japanese monster trys to upshift rapidly but the belt is too low in the secondary. If this was a '72 Chevelle it would be like shifting into 4th gear while going 40 and then revving it up all the way and dropping the clutch. It is in the wrong gear and something has to give. The '72 Chevelle would just go baaaaaaaaaa. But the 200 horse Sidewinder has enough snort to want to try to pull that higher gear. When it can't the weakest link will fail. In this case it is the belt. Your problem is in the secondary.

This is 100% speculation. What if his offset or Center to Center is off? Any tuning to a snowmobile clutch without checking alignment is a waste of time. 80% of stock clutched belt blowers I’ve worked on are out of alignment. The othe 20% are mechanical issues.

 

[race24x]

2017 LTX SE here.
GrubF I wonder if that is part of the issue why at 6-2 I didnt see an issue and when they put it back to 6-1 I blew a belt Put it back to 6-2 but I havent tried it again yet. 6-2 it should backshift a bit quicker right?

 

[ClutchMaster]

2017 LTX SE here.
GrubF I wonder if that is part of the issue why at 6-2 I didnt see an issue and when they put it back to 6-1 I blew a belt Put it back to 6-2 but I havent tried it again yet. 6-2 it should backshift a bit quicker right?

Thanks for answering my question, good luck fixing your clutching woes. Your welcome.

 

[grubf]

He said dealer checked his offset so I am assuming that is correct. Center to center could be an issue but I doubt it. Not with the way these are locked together. Of course it is just speculation. But for belts to blow without obvious heat stress or high miles there has to be a reason. I have seen this before on other sleds. I have seen where an unstudded sled won't hook up enough to cause belt issues but after it was aggresively studded it turned into a belt blower. It doesn't take much. Stick in a heavier spring in the helix or get a quicker backshifting helix. One at a time though.

 

[grubf]

Your dealer did all he could do. Check factory settings and advise you on being nice to your belt. Remember these sleds are still relatively new. There are many little details still to be learned. Also your dealer probably does not have a big box that says DALTON CLUTCH PARTS that he can try. About all he can do is play around with the settings on the stock secondary. Which he did. But at some point your belt is getting tight and the motor has enough power to shift no matter what so it is snapping the weak link. You don't have enough miles on it to have much of anything worn out. You have fixed the flat spotted rollers and after that there is very little to go wrong with the drive clutch.

 

[Big_Phil]

I bought a demo this year, and I blew 2 belts pretty quickly until I figured out what was happening.

There is a problem in the secondary clutch and it is not closing all the way when you jam the brakes and lock up the track. The belt gets stuck in the secondary, and when you give it hard gas, the belt is half way up the primary and deep in the secondary, then it snaps.


My dealer changed the bushings in the secondary today for me, and it seems to move alot smoother now. I am 90% sure this is the fix of the problem, I will report back later tonight if i go for a ride. Its pretty cold and snow out today.

 

[stevewithOCD]

Joe ltx-le had a wicked belt blower until his dealer gave him 2 new clutches. Problem gone for him.
If they put in all old parts & didn't change anything else, then it proves that his problem just may have been a binding clutch.

I think the basics like the CLUTCHMASTER said need to be checked first to start with a clean canvas...

 

[fourload]

Changed out my stock setup for TPI orange secondary and primary with glide washers and their rollers. After hearing about all the spring binding issues and bad rollers I was nervous about blowing belts so I decided to change the stock springs. Much less black dust than stock now. Many full throttle lake and trail runs with almost 400 miles on the sled and the belt looks perfect.

 

[ROCKERDAN]

Stock secondary spring is a problem IMO...Just not fast enough backshift(snapped belts) and also too much slippage, causing massive belt dust.

Im testing now with orange TP sec spring and a 33/35 helix, and wider torlon rollers....Threw in a new Ultimax, so will see this weekend how the belt dust is.

Dan

 

[XP123]

I put 1500 miles on my belt last year with stock clutching. Lots of hard acceleration runs but not too many long WOT pulls. Belt looks great. This year 250 more miles but now with big venom clutch kit and 33/35 Dalton helix and orange secondary spring. Lots of hard acceleration runs and some deep snow trail breaking. close to 1800 miles on original belt and it still looks great with no chords pulling or damaged cogs.