Shreaded belts

[quadracer1]

I have a 90 mxr and run the GNCC series with it, in the last 2 races my son has shredded the belt each time. The first belt had 5 races on it, but had no wear. This last race was a brand new belt. Has this happened to anyone, or does anybody have any ideas. Thanks

[mcatvme]

Are you running a stock belt or a malossi belt?

[woodsracer22]

belt is building to much heat check your rear spring to weak?

[dodgepower]

ditto what woods racer said.

[quadracer1]

Stock kevlar belts, 2400 spring.

[woodsracer22]

2400 koso to stiff causes alot of heat and stress on the belt also. The stock belt is not kevlar. Try a Malossi kevlar belt and a 2000 Koso spring.The idea is to have a spring that is stiff enough so the belt won't slip but not to stiff causing to much side pressure on the belt that builds to much heat. A worn or sticking rear pulley can also cause a belt to break.

[hotquads1]

this can also occur due to belt being out of allign, from frnt pulley to rear , a slight difference will cause much heat . if you have recently pulled or replaced the frnt variator , check spacing .
marc

Originally posted by quadracer1
I have a 90 mxr and run the GNCC series with it, in the last 2 races my son has shredded the belt each time. The first belt had 5 races on it, but had no wear. This last race was a brand new belt. Has this happened to anyone, or does anybody have any ideas. Thanks


THE REASON IS YOU GOT A BAD FRONT VARIATOR THE SHIM IN THE CENTER BROKE LOOSE I WOULD LOOK AT THE FRONT BEFORE DESTROYING THE REAR COLETON CHEESEMAN RACING TWO TIME AMA FLAT TRACK CHAMPION ON DINLI T-REX 90CC WICKED