Last saturday i went riding quads with my buddies. I didnt put any pressure on my quad, i was acturally dirving pretty calm. After about half an hour on the trails my quad gave me a loud bang, the quad stoped and smoke started pouring from the left side. As it turned out, my belt snapped. I replaced it within the same hour and agian, in about 20 minutes of riding time the same thing happened...

Whats goin on? please help.