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post #11 of 15 (permalink) Old 03-13-2014, 07:07 AM
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Not to completely derail, but I'm curious as to how the belt slipping led to a roll-over. Also, hope everyone's ok (which I'm assuming they are otherwise you prob would have stated it.)

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post #12 of 15 (permalink) Old 03-13-2014, 07:31 AM
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Not to completely derail, but I'm curious as to how the belt slipping led to a roll-over. Also, hope everyone's ok (which I'm assuming they are otherwise you prob would have stated it.)
Happened to one of the can am guys I have ridden with. Basically due to the fact he was running oversized tires with 3,000 miles on the original belt. To compound the situation he haden't done any clutch work to the bike. He was doing a slick moderate hill climb lost momentum due to lack of wheel speed from the belt slipping. Almost made it up then the belt blows apart sending him sliding (brakes locked) backwards into the tree line. Luckily for the tress and the fact that the trail was curved. If it wasn't for those two factors it would have been a lot more damage then a bent rear rack and busted chainsaw mount.

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post #13 of 15 (permalink) Old 03-13-2014, 07:32 AM Thread Starter
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we were headed up a short steep section. My step son was driving. His first time driving that machine (he has a 110cc kid quad) on the trails. I was on the back. heading up the steep spot the belt slipped and we lost momentum and forward progress. as we started to roll backwards my step son gunned it (instead of letting it roll back and taking a second shot) and the belt caught. and over we went. I acted as a roll cage for him as I'd grabbed onto the handle bars the second we lost momentum. and everything was fine. I attempted the hill climb again and couldn't even get enough momentum/speed going to start up the hill because the belt was slipping so bad. Pulled the clutch cover drain plug and let it drain/dry for a bit. once that was done we were back in business, but this time with my step son riding behind a friend of mine and me on my machine alone.

there were two factors that caused us to go over. 1 the slipping belt. and 2 my fat ass on the back. 1/3 of the weight of the machine up high and on the back on a steep section just isn't a good combination. Had he been going up on his own (granted it was short, like I could stand at the bottom and be taller than it) I doubt it would have gone over.

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post #14 of 15 (permalink) Old 03-15-2014, 02:26 PM
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If you're belt is hourglassing in idle, you have a clutch issue and that problem exists whether its in gear or in park. The primary clutch is always spinning (connected to the crankshaft) and is not affected by what gear you have the bike in at idle. The secondary will always free spin in neutral and park, only in the other gears will it actually try to drive something. So if your belt is moving/rotating at idle in neutral or park, you have a problem.
Wouldn't the primary always have a "grip" on the belt, causing the belt to rotate with the primary all the time? Isn't that why everyone says not to idle in gear? Because the primary is always gripping, therefore spinning the belt?

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post #15 of 15 (permalink) Old 03-15-2014, 03:14 PM
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Originally Posted by Amdforever View Post
If you're belt is hourglassing in idle, you have a clutch issue and that problem exists whether its in gear or in park. The primary clutch is always spinning (connected to the crankshaft) and is not affected by what gear you have the bike in at idle. The secondary will always free spin in neutral and park, only in the other gears will it actually try to drive something. So if your belt is moving/rotating at idle in neutral or park, you have a problem.
Wouldn't the primary always have a "grip" on the belt, causing the belt to rotate with the primary all the time? Isn't that why everyone says not to idle in gear? Because the primary is always gripping, therefore spinning the belt?
Nope. The primary should always release the belt at idle. If it were always gripping the belt then that would mean the secondary is always turning, thus making it hard as hell to get into gear

When I installed my QSC clutch kit, due to the weight setup and spring config for mine and my type of riding, the weights were already pushing on the spider at idle, causing the belt to rotate and creating the problems I just mentioned above. I had to add one of their shims just to get it to stop doing that at idle.
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