When do belts blow?

M

mile9c1

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Joined
May 9, 2013
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268
Age
44
Location
Grand Rapids, MI
At what thickness do belts start to break? All my belts are several years old and show wear (34.2mm) but they are still well within the wear limit (33.5mm). Would you guys replace them at this point?
 

For me it all depends on the condition of the belt. Also am I getting the best performance? or is the belt holding the sled back?
 
Hey my friend just bought a used F1000... we've gone 230 miles so far and no blown belts :sled1:

I've never ridden a new belt so I don't have much to compare my performance to.
 
chris700readhead said:
I don't know about that devinzz1 I've been running an xs805 for three years now
Click to expand...

Had it on for exactly a week and I got the blow on the gopro. It may have been defective but when I tried to get another with the 1 year warranty they wouldnt cover it without the bill. Put a yamaha one on and have been running it ever since. vlcsnap-189628.jpg
 
If you blew an xs805 I would be worried about alignment of your clutches. Yamaha's generally don't do that when the clutches work right and are aligned.
 
I usually pop a 8dn after I have gotten it hot towing someone or breaking trail at low speeds. Usually the top layer peels 1st and if you catch it you are fine. Otherwise it makes a mess.
 
the plug holder on the air box is where you want them. that holder is real sturdy. i had a few of those SRX holders that go on the belt cover laying around so i put a couple on my viper. Bad idea...

never fails we have a problem on the trails with another sled and they dont have extra plugs along. "hey jason, can i borrow some?" So i thought id carry some extra. NOT ANYMORE... :) I have 3 for me and none for you... :)
 
You are fine as long as it is not glazed or cupped. Does it still perform well without any chatter or slipping? I have run them down to 33 and even 32.5 mm before replacing.

Heat is what makes them blow. Not just when heated, but after a belt has been overheated and then cools it will likely blow the next time it is stressed. The delamination mentioned by main is a great indicator that it is about to come apart. Catch it and save yourself a job cleaning out the cords. It can also save you from clutch guard damage. The higher horse sleds can wreck the clutch guards when they blow a belt at high speeds. Towing another sled is a great way to overheat a belt. I sometimes add more twist in the secondary when towing, but have had that backfire because it doesn't let the primary shift up to a point where there is more belt contact and it slips. Generally it helps to add more twist.
 
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