I would like to show you my project that i have been working for the past 6 years, it is an electric propulsion system for powered para-gliders and ultralight aircraft.
Motor is Brushless outrunner, it has a power of 20kw continuous, mass 7.7Kg. Controller is AVR8 based, it can handle 300A continuously, works on 20S (84V) li-po, it includes battery management system, it has a display with menu where all parameters of the system can be set easily. Battery is divided in 2 modules, each 10s 60Ah, total in series 20S 84V.
I would also like to thank every body on this forum who helped me when i got stuck.
If there is someone interested about more parameters, i can post a more detailed description of every thing.
I posted some pictures with the system and a link with the ground test of the system.