I have designed and built a motor using completely new design features, It is unusually efficient and lightweight. I designed it for my 3 wheel car ( motorcycle in USA ). The motor weighs only 16 KGs and can deliver 100 HP at over 95% efficiency at 5000RPM. I would be pleased to put the design out for open source if anyone is interested, Currently I need a controller to run the motor at full power as my current one only handles about 25 HP. The motor is designed to run with a 400 volt supply, kV is 20rpm/volt. It is a 3 phase PMAC using Hall cells but an encoder could be added. The output back emf is a poor sinewave so I use a trapezoidal drive. The advantage of this motor is it is lightweight and has very high efficiency allowing for forced air cooling. It would be ideal for a light plane. Any interest either with providing a controller or building yoour own motor, I can supply any custom machined parts at cost. THe design is scalable for those not needing such high power.
Thank you. Themotorman