Quote:
Originally Posted by Monochron
Belts DO stretch instantaneously. If you shock load the belt hard enough it will flex outward in such a way that it can stretch slightly. Possibly enough to skip some teeth. I have some high speed video of this if you want to verify.
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I don't have the high speed camera to investigate this but I'd be curious if this was the belt stretching or a combination of, pulley shafts deflecting under high load, the teeth on the opposite pulley compressing, and the teeth on the skipping pulley compressing and bending. The way the belt is constructed I'd be much less surprised if it was the neoprene teeth deforming rather than the fiberglass tensile member stretching. I don't think they stretch much (more then negligibly) before failing but I don't know the exact numbers (elongation at break) on that.