[DonRotolo]

To really understand why the belt failed, we'd need a lot more information, and good photos of the broken ends. Incorrect tensioning, both over and under, is my best guess for the root cause of the failure. tdlrali is also correct, the shock loading these belts would see is likely way over the design limit. In an inustrial setting, with no shock loads over the limit and optimal tensioning, a belt like that might last a year of continuous use.

The solution is simple, though: Inspect the belts every 5 or 10 matches and replace what looks worn - or - just replace them every competition.

Don