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What's going on with my belt/clutching?

RYDPWDR

Well-known member
Premium Member
First off I will say I'm not a clutch tuner, I kinda go off what people find that works and use that. I have a 2012 800 with 200 miles, blue-pink primary, black-purple 2ndary. We ride in the trees on and off the throttle all day and ride very hard, but no long hill climbs. Ride at 8000' and up. Clutch runs hot and already have cords coming out of side and the inside cogs are scraped and chewed up on 115 belt. I took a picture of this belt beside a old belt off my edge motor with over 1000 miles on so you can see the difference (left and bottom is the pro belt). I personally have never seen the inside cogs look like this or is that normal? Is it caused by belt slipping or ??? Deflection is set properly. I always thought if cords coming out you either have too much heat or alignment issue and what about the inside cogs looking like that? Thanks
IMG-20120213-00178.jpg

IMG-20120213-00179.jpg
 
clutch/belt

when you grab ahold of your primary can you lift it up and down?
does the finned ruber bushing part of the motor mounts move at all.
I have an 11 pro and it does this.
 
Belt deflection OK. Looks like inside of belt is rubbing on primary. The part where it sits when it idles. Belt is to tight between the two clutches.
 
shim your secondary out but also remember to add a washer in the bolt so that the clutch floats i had to do this with mine the inside cord was pulling i gained 300 rpm,i also installed the derlin washers made a huge diff on shifting no binding
 
The 115 is a hard belt. It is made for strength, but will slip, causing more clutch heat. The type of riding you are doing also makes a lot of clutch heat. If tree riding is what you like, I would suggest that you try lower gearing. If you haven't already, you should put a delrin washer under the cup of secondary. I'm sure you know that keeping the sheaves clean, and scrubbing the belt will get rid of some of the heat.

I like tree riding myself, good luck,
SD
 
Of the three we have (2 11s and one 12) all the clutches were out of line. The secondary needs one thin washer removed
 
Thanks for ideas. I do run a delrin under my spring cup and also in my primary now also after snapping a primary spring. The 115 belt was designed for the 900's because they abused belts so bad, so I know they are tough. Think I'll try the 122 this time, little softer but still kevlar. Guess I'll drag it to polaris when I pickup a new belt and have them check alignment etc...something is not right.
 
It also looks to me like your deflection is a little tight, this could be a contributing factor to your belts running extremely hot. I also think it is a good idea to get your secondary alignment checked. There are alot of guys out there getting 1,000 to 1,500 miles out of a belt that ride quite hard. I have 650 miles on my original belt with no issues whatsoever. I personally think the 1122 is a fantastic belt at much less cost.
 
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