What size torque arm do I need for this hub motor??

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Deleted member 4366

Guest
The gears don't break on geared hub-motors because they're strong enough for what they're supposed to do, so let's not start spreading that myth.

Every motor has advantages and disadvantages. You have to choose one that's best for your type of riding. Generally, the larger geared motors like the Bafang BPM/CST and MAC win at speeds up to 25 mph. The standard 1000w/15000w DD motors win at speeds above that; however, everything depends on winding speed. If the DD motors would be about 230 rpm, they would be a lot more useful, but they're normally 400rpm or more.