what dc motor controller, can i use to power a 50cc scooter, i need 40km range.

I need same help, i`m trying to modify a 50cc petrol scooter, to electric, i`m about 80KGs, i need about
40KM range in one charge, speed is not a problem, just leave home early , now here is my problem
what motor and controller should i use? is a lot of room for batteries, any help will be appreciated.
Thank you all

Jayefuu7 years ago
This is probably worth a read:
Its a battery issue rather than a controller one.