Jaguars failing

[Racer26]

oh. I forgot to mention that when I opened the case to look at the damage to the jags we toasted, there was NO noticable chunks, flecks, or specks, of metal shavings inside.

I'm very reluctant to just accept that all magic-smoke-emitting failure modes are user-error-induced.

I think its rather likely that either (and this does sort of qualify as user error i suppose) a loose or otherwise high resistance connection is causing the jags to enter some weird failure mode. Alternately, it has been suggested that the loads induced by running a motor full forward and jamming it to full reverse very quickly can reach huge numbers. I expect that some of the toasted FET failure modes could be caused by this happening in a fashion that the fault-detect circuit couldn't detect fast enough.

I can't say carte-blanche that it wasn't our fault they blew, but IMO they blew for other reasons. I know the precautions we take.