I come again afterlong silence,we focus on new improvement of 3500W scooter during chinese new year.
Now it is not only speedy, See http://www.youtube.com/watch?v=z_HJhNYs34g ,
but also very big torque,see http://www.youtube.com/watch?v=uHgDA6bKXvQ ,
Full rim structure make it come out more torque,Its peak torque already 180NM and peak AMP only 80A. Regenerative brake ensure of its safety when go down the hill.