Blown belts?

[ROCKERDAN]

Yamaha still says the sidewinder doesn't have belt issues. It's "operator" error they claim. I was told to warm the belt up slow when it's cold.

I do that and still blow belts.

My 16 viper with mpi turbo did not eat belts i only blew one in 5000 miles and it was a big old pull when it blew. That sled had the same power as a sidewinder.

Well at least that is a viper which is same style of engine mounting and chassie. So Whats different? Roller secondary.

Sure would be nice to find a smokin gun and then put blown belts in the past on SW.

 

[krm]

Well at least that is a viper which is same style of engine mounting and chassie. So Whats different? Roller secondary.

Sure would be nice to find a smokin gun and then put blown belts in the past on SW.

It's either heat ,running out of gear ,or alignment that causes belt issues

 

[Joe ltx-le]

It's either heat ,running out of gear ,or alignment that causes belt issues

I agree for sure , but I believe your missing 1 more cause. Improper clutch operation, either binding or sticking like a lot of guys are saying when snapping belts.
I feel confident it's not heat with my machine or clutch offset..

So when measuring alignment between the clutches ( offset ) your only measuring distance. As I'm sure a lot of you know that's only one alignment check. I don't have the setup to check angular misalignment. It's something to look at though.

 

[1nc 2000]

The secondary clutch sheave bushing had excessive amount of play on my sled. Haven't blown a belt since it was changed.

 

[ROCKERDAN]

It's either heat ,running out of gear ,or alignment that causes belt issues

I think we can rule out heat....my 1200 clutch and belt were ultra hot on 4tec, and never blew a belt, now its alot less HP but these SW belts and clutches when I felt them were much cooler then any sled ive owned since my apex.

I just wonder how good these belts are?

Does anyone know if the cat 998 belt is anywhere close in dimension?

And if the cats are doing ok on belts, and they are hotter we know....I think we can rule out a chassie flex issue.

Gearing is different on cats isnt it?

Don had thrown an idea out to me, in which the gearing on the LTx and the Rtx are identical for 17. And the majority sold were Ltx....could it be that the gearing is too tall? And then many of us went up even more to 22 tooth. But wouldnt that cause alot heat then if it was too tall gearing?

And the fact they Snap begs the fact of on/off the flipper and secondary not keeping up to keep belt taught on backshift, and then snap when flipper is whacked again. Maybe these new torsional springs will help?

There are guy that rode these things pretty hard and had what I would call pretty decent belt life too. Just dont hear from them as much. I have no problem swapping in a new belt around 1200 miles or so, if they can hold that long id be happy.

But its the snapping of belts with low miles that bugs me, cause now you are afraid to hold it on the lakes, for fear of F***ing up your nice new ride, and so the search for belly protectors is on....sure bringing back memories of 2012 where I had Frank make me some nice custom bottom protector and new Top belt guard....that will be a big seller im guessing again with SW.

 

[ROCKERDAN]

The secondary clutch sheave bushing had excessive amount of play on my sled. Haven't blown a belt since it was changed.

Is that the Helix bushing? Or is there another im missing.

Anyone have issues with dalton helix and belts? Could it be something simple like the stock helix is made in China or something and is garbage? LOL

 

[1nc 2000]

Is that the Helix bushing? Or is there another im missing.

Anyone have issues with dalton helix and belts? Could it be something simple like the stock helix is made in China or something and is garbage? LOL[/Q

The bushing in the sliding sheave. (Inboard sheave)
Not the helix bushing.

 

[ROCKERDAN]

gotcha.....so was yours loose enough to feel play when on Jshaft?


And you blew belts before this and was better after?

 

[1nc 2000]

Yes snapped belts prior. Secondary helix was shimmed for coil binding also and still snapped belts, offset was set at maximum. All within the first thousand miles. Replaced bushing in secondary sheave and put on over 1200 miles with no belt issues.
Sled is stock.

My nytro has over 19000 miles on it and when this same bushing would get worn it would cause the secondary to bind and bog down my motor at times. After changing bushing my nytro would be fine. On my sidewinder it would just snap the belt instead of bogging motor down.

 

[ROCKERDAN]

Great report, and thank you. The more things we can all check the better for everyone with issues.

 

[Joe ltx-le]

I checked my secondary bushing. It didn't look damaged , but it did have a fair bit of play on the shaft.

Are you saying that the new bushings are a tighter tolerance 1nc?

 

[Joe ltx-le]

A little photo memory for this chat.

My first run up north on my winder.

Around 200 miles

 

[1nc 2000]

Don't think they changed the tolerances on the bushing as it's the same bushing that is in the non roller secondary clutch.

 

[ROCKERDAN]

I wonder if the rollers all not touching equally, and then rollers flat spotting, could make that inner sheave bushing go bad quickly.

This could all stem from the new roller, and Yammie never needed the helix tolerances to be so perfect with cast helix as the plastic pucks would wear in and take up any intolerance. But now with rollers the problem shows up right away. I believe both Cat and I know DOO use 2 rollers, where as Yam might be the only 3 roller secondary that I know of from factory. So the tolerances need to be spot on for rollers.

I am interested to get my new sled, and compare the stock helix and how it sets against rollers NEW, vs the nice dalton helix I got.

Dan

 

[Joe ltx-le]

I wonder if the rollers all not touching equally, and then rollers flat spotting, could make that inner sheave bushing go bad quickly.

This could all stem from the new roller, and Yammie never needed the helix tolerances to be so perfect with cast helix as the plastic pucks would wear in and take up any intolerance. But now with rollers the problem shows up right away.

I am interested to get my new sled, and compare the stock helix and how it sets against rollers NEW, vs the nice dalton helix I got.

Dan

Funny story.
Today I went to the local dealer on the way home. They have an anniversary machine on the floor. I asked to take the side panel off ( buddy didn't know how but I showed him). Two rollers touching and one floating way off the helix worse then my sled. Doesn't look any different.