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Obviously I asked Matt his thoughts;


“Its of course hard to say exactly what happened but I think its because of a weak gear. In other words, a gear that was not as strong as it needed to be and it just broke off. I say this because of the clean break and if it was due to a load, more teeth would have sheared. I have seen this gears missing 3 or 4 teeth when taking gear boxes down.


Also, teeth broken due to running the bike hard is typically happening in first or second gears. In 4th, you are already at speed and not accelerating much any longer.”


I wonder, purely as a layman, that ‘using all the torque available’ in top would have put undue stress upon the box?


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