can someone explain to me exactly what a motor controller does in an electric powered bike?
ok so i wanna build my first electric powered bike but i would like to do it all from salvaged parts or parts i will make. i am not looking to go 100mph or ride it for days at a time I would just like to built this first one to help me understand how it works. As of right now my biggest hang-ups are what does the controller do and can i make one, and how do i figure out how much power it will need in other words if it weighes 10 pounds and i wanna go 10mph i need a 12v motor (hope that makes sense)
Thanks for any help