Excessive Application of Torque? (Forensic Mechanics)

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Just to keep this in perspective, this is the belt sander, and a 60lb machine (pretty light, by motorcycle and scooter standards) running a 10kw motor with an on/off switch at 50V max, then at 36V, and 20C batteries.  So, on the one hand, there’s not a lot of work to be done.  On the other, it’s an insane amount of torque transferring to the wheels.  But the wheels are spinning, right, and they were built for about 600lb capacity at about 10mph.

Sorry, that’s all the specs I can put together for this particular event. Oh wait.  0-2500RPM in about .06 sec.

So pulling the wheels apart, I see this ^.  …and this, and this:

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Think it got a bit of torque?

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