I love hub motors and also pneumatic wheels, and pneumatic wheel hub motor sounds fantastic.
What do you think are the technical problems to make one?
I think the kv must be super low (~50kv) because of the large wheel and direct drive, so more turns, but then the copper windings need to be thinner, which means more heat and less efficiency.
but hub motor would save you 100$ and if it can be more robust if it would be sealed.
A photo posted by enertion boards (@enertionboards) on Apr 28, 2016 at 6:48am PDT