blown belt issue fixed

[Lonerider]

Blew belts at 80 miles. I spent thousands of dollars to fix this problem, I have input from a lot of racers, aftermarket manufacturers, dealers, engineers. I have 5878 miles on my sidewinder & this past week I finally have it to a point I CANNOT BLOW A BELT! The spec that Yamaha is bs in my opinion. It works for one but not others. WHY , simple - quality control. We all know some sleds have a shim, maybe 2, to far out or in...

We got my 2 sidewinders to be able to withstand full throttle pulls time after time, 8000 rpm runs till your thumb was tired and then bang it wide open, Non stop hour rides as fast as we could go.(Chapleau to Searchmont ) in 4 hours. It doesn't blow anymore. 1578 miles this past week. 2 sidewinders both with TD flash running 265 powertrail.

Long story- not short, this is what how we did it & we are running now. ( not talking about the stuff that didn't work or how many springs, weights, primary & things that do not fix the issue.) For starters you must have the alinement tool from Hurricane. ( primary & secondary are not all the same thickness ) The tool allows you the only way I have found to measure wear the BELT RIDES, not how thick a casting is or how much was cut off a casting. Once you see how far out of alinement you are the hard part starts. I had to have my secondary shaft milled down 342/1000 & remove all shims to get it were I am running it now. ( this number is different from machine to machine or if we changed primary or secondary, this is why you must have the tool to start.) I worked with Micro Belmont to have my secondary shaft cut down. ( THANKS GARY ) NOTE: I cut down the aluminum plug the same amount as what I had cut off the secondary shaft. ( Thanks to PATS Motorsports) By cutting the plug ( part # 8kc-RA714-00-00) down it solved the floating clutch problem i got when we cut the secondary. Now its none floating or a fixed secondary. (ONLY 1 sled needed to have any cut off secondary to get it alined.) Next we needed OEM YAMAHA PARTS. larger secondary shims, cost about $1 each, 2 different sizes. part number 8jp-RA448-00-00 & 8jp-Ra449-00-00. (1mm and 2mm shim) AND small shims 8kc-RA446-00-00 & 8kc-RA447-00-00, .2 & .5 thick. Use the large shims to get the EXACT ALINEMENT!!! Nothing except exactly perfect will work. I quote dave from Hurricane: GET IT EXACT!

Now the secondary is alined you need to Buy a new helix, stock helix is a major part of the problem in our opinion. (YAMAHA changed the helix on the new 2019 models??) Because they are part of the problem? We are now running the Thunder Products secondary rollers & Holeshot 33/35 helix and also went added the Dalton Orange secondary spring. Why this product, just the brand WE picked with input from people we talked to. This helix shifts smooth & backshift smooth not allowing slack in the belt like the stock helix does. Now it time to set belt deflection or belt ride hight & engagement. We have our belts VERY lose. Belt sits very high on secondary 1/8 above or more. We have ours so it is able to just spin, turn or rotate the belt without primary or secondary moving. (TRAIL SETUP, NOT FOR OFF TRAIL, LOOSE BELTS WILL BLOW IN POWER EVERTIME)

By doing this the sidewinder belt life increased a lot, But we were not satisfied, we both were having primary spring bind, I broke my first primary spring in less than 500 miles & and jasons lasted much long with glide washers, but still broke, we tested different weights & springs. 1 sled runs Dalton QAY-70 and 1 sled runs Dalton DTYA -1 weights. WHY? by mistake, Two same model sleds, same flash, same helix, Completely different shifting & top end speed with these weights, so different you would not believe you are ridding matching sleds, not even close. We both like the spring rate of stock springs but by adding the Dalton Black Green spring to the primary the horsepower came ALIVE, not for everyone, very jumpy, quick or racy feeling. Along with the spring we installed Thunder products glide washers to cut down on the primary spring bind. (helps but still broke a STOCK spring with them.)

Belts -- 8jp's we cannot get to last on flashed sidewinders. So we went to 8dn belts. How? We simple added shims to the belt ride hight. We had to add different combinations of shims to get the very loose belt that is needed to make the belts last. NOTE: remember I need to cut my plug, so how much you add WILL be different from sled to sled. ( factory shims a .2 & .5 thick. we are running a equivalent to .7 or one of each. MOST PEOPLE disagree with adding this much shim, but we aren't blowing belts anymore.


This is no BS, NO product pusher, just what a spent, THOUSANDS of dollars to enjoy my sled, I HATED this sidewinder from the first ride. Now at lease it doesn't blow belts.

 

[WVTurboLTX]

So which Daltons do you like better? You said they run different but didn't say which weights did what.

 

[theewarrior]

Are you saying we shouldn't float the secondary?

 

[Finesy]

Too much work, trading them in is easier

 

[stevewithOCD]

Well thanks for posting these results.
The first thing i notice is you said the clutch castings are not the same so therefore you can't just measure the "offset" the conventional way.
That's why you recommend Hurricane's tool. Correct?

 

[JPS]

I have been thinking quality control may be all over the place. My Sidewinder and a friends both 2017 from as close as we can check our offset is about the same, both sleds still have original belts, 1500 miles on one machine and 1800 on the other. mine came from factory with no shim, friends machine came from factory with 2 shims. lucky we are not having belt issues, 2 same sidewinders with very different alignment from factory

 

[STAIN]

Too much work, trading them in is easier

That was constructive..........

 

[NYTurbo]

I have been thinking quality control may be all over the place. My Sidewinder and a friends both 2017 from as close as we can check our offset is about the same, both sleds still have original belts, 1500 miles on one machine and 1800 on the other. mine came from factory with no shim, friends machine came from factory with 2 shims. lucky we are not having belt issues, 2 same sidewinders with very different alignment from factory

Sounds like you have a dealer that actually checked the offset before you took delivery.

 

[XP123]

Wow nice work but boy it all sounds like a pain in the azz. I just want to ride my sleds.

 

[Lonerider]

Are you saying we shouldn't float the secondary?

It took lots of blown belts and steps forward and backward to not blow belts anymore. Cutting the plug was a long way into the fix. It must be cut down if you cut down the secondary shaft. I tried a floating clutch and blew belts. Pats Motorsports pointed this out. They are cutting secondary ‘s and the plug. This is input from a very knowledgeable dealer. So I had them do it on the spot. One step of many. No one thing fixed it. It all works together. I put on over 2400 miles the past 30 days No one adjustment did the trick

 

[Lonerider]

Well thanks for posting these results.
The first thing i notice is you said the clutch castings are not the same so therefore you can't just measure the "offset" the conventional way.
That's why you recommend Hurricane's tool. Correct?

Yes

 

[NYTurbo]

What' the significance of cutting the plug ?

 

[Lonerider]

Wow nice work but boy it all sounds like a pain in the azz. I just want to ride my sleds.

And that’s why We fixed it and shared how with all who are having the same issue. Not trying to be a big shot. TY and all of you have helped me be able to do this. Help when you can

 

[Lonerider]

What' the significance of cutting the plug ?

. As you can read in another comment, some have 1 or 2 shims. There are also different amount of shims in by the plug and not to mention people are saying 1 or 2 shims. There are different size shims. One guy may have a 1 mm shim and the next 2 mm shim or two 1 mm shim... same in by the plug. There are 2 shim sizes. The large washer needs to be flush wth helix and tight without the belt on. Lots of trial and air in this step to get it right. We added to many and had to few many ties.

 

[XP123]

And that’s why We fixed it and shared how with all who are having the same issue. Not trying to be a big shot. TY and all of you have helped me be able to do this. Help when you can

I think it's awesome what you did. I'm just glad I don't have a belt blower because there is no way I would've had the patience to go through what you did.