Hey, nice! What kind of components are you using? Engine, batteries, etc.? Did you pick those yourself, or borrow the design from an existing system like the e-help for hang gliders?
Controller: https://kellyev.com/shop/khb/ KHB - High Power Opto-Isolated Brushless Motor Controller With Regen (72V-144V) (400A)
* must choose high speed option controller to get more than 2000RPM !