I don't run a 22 or brushless(souped-up old Mardave Cobra and brushed),
but straight away I'd say drop a tooth or two on the gearing.
Also(going on what the brushless boys say)check any fans are working
correctly,check that any thermal cut-outs are behaving and make sure
you have enough cool air entering the body around the speedo and motor,
especially if you're running in the mid mount config.
BITD when I raced using Ni-Cads,gearing was of paramount importance
to get the best performance and run times out of our old brushed modifieds.
Too high and they'd run too hot,lose performance and absolutely gulp battery power,
too low and they'd wheelspin like hell,you'd lose top speed and get no where.
Mark
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