Thanks for your help.
Reading a bit more, I have heard that a motor can act as a dynamo? Is this true?
If so I could have the motor fixed to the wheel to when it turns freely without assistance it will charge the battery a little.
You are quite right, after a little maths I realise that...
So I am making a power assist kick scooter for a project at collage. The main focus will be its lightweight, carbon layup structure but I wanted it to have a power assist feature. This means having a dynamo connected to the front wheel charging a battery (when going downhill) then flicking a...