Shifter and belt - Can-Am Commander Forum
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post #1 of 32 Old 08-05-2019, 11:09 AM Thread Starter
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Shifter and belt

My 18 Commander 1000 (250 miles, 2in lift, 2in wheel spacers, twin air filter kit, 30" tires) has horrible belt squealing. I have replaced the belt 3 times and its quiet for about 50 miles then starts squealing again around 30mph or 2500 rpm, its not the rear end because it will do it in park by just reving the engine. I had UATV do the lock up mod, upgraded one way bearing, custom springs and weights and another new belt. It does accelerate better for sure but the noise is back and 80% of the time I cant shift through the gears(P,R,N,H,L) with the engine running. If I turn the engine off then it shifts just fine.... Please help this SXS is driving me nuts
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post #2 of 32 Old 08-05-2019, 11:31 AM
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Are you getting burned belt residue on the sheaves from slippage? It is the general consensus that 30 inch tires are a bit much for the stock clutch and other components.

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post #3 of 32 Old 08-05-2019, 11:36 AM Thread Starter
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Its not a stock clutch, UATV sent me different springs and custom grind my weights for my altitude and tire size. Yes there is a decent amount of belt residue. I have been using the Gates C-12 belts. They are a fairly light weight tire, Quadboss QBT846 37/38lbs

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post #4 of 32 Old 08-05-2019, 11:41 AM
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30Ē rubber is hard on the stock clutch . And I would switch to the mav belt being the gates isnít working for you. Some have no issues with gates c12 most do. And sense you are running 30Ē rubber you definitely need to get your clutch locked or get aftermarket clutch .
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post #5 of 32 Old 08-05-2019, 11:44 AM Thread Starter
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Read above: I did have UATV do the lock up mod, sealed one way, custom clutch springs and weights were grind to my altitude and tire size. I will try the Mav belt
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post #6 of 32 Old 08-05-2019, 11:53 AM
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It's still a stock clutch(with modifications). With 30 inch tires, it's not only the weight, but the additional circumference of the tire that adds load to have to move.

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post #7 of 32 Old 08-05-2019, 12:08 PM
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Need to pull the cover off start it up and watch the primary if itís trying to turn or turning the belt while idling thatís why you canít shift. Guessing the c12 belt is to wide if you have changed everything else . Check it again before you take it off then before putting it back together with mav belt on see if itís doing the same thing . I the weights are sticking it will try to keep belt engaged. So if c12 is wider than factory which in most cases it around 1mm wider it wonít help matters . You lose a lot of gearing going from 27Ē to 30Ē rubber . Most that run 30Ē are stuck with running low gear most of the time .
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post #8 of 32 Old 08-05-2019, 12:10 PM Thread Starter
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Oh ok I got ya, what options are there for aftermarket clutches that are different? There are no clutch kits out there for my altitude ( 7000ft - 11000ft) thats why I had UATV do their mods. After reading I am going to order some of that WS2 stuff to add to my gearbox to see if that helps with my shifting problem. How do you know how much to add? I just ordered the Maverick 422280364 belt and I will regrease my one way even though its brand new.

update I found a 212 belt, should I order that one or is the 364 the same?

Last edited by LM74; 08-05-2019 at 12:14 PM.
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post #9 of 32 Old 08-05-2019, 12:12 PM Thread Starter
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The 30" tires dont seem to have robbed me of much power, in H it will throw you in the seat and still does 65mph. Im sure if I was using big heavy mud tires that would be different but here in Colorado there is no need for a mud tire.
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post #10 of 32 Old 08-05-2019, 12:17 PM
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Doesnít matter how it feels . 3Ē of rubber is big difference in gearing .


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