I knew that, as my grandson says all the time..... I'm so old, and been around so long that I remember when there shift kit was just an idea... I never did get into the details of how they adapted the bike chain drive to freewheel though. If I had given it any serious thought I would have known that it had to be a freewheel crank. Thanks for the information all of you.
I think I have talked myself into building an adult scooter from a bike frame and the rhino drive motor and mount but with the bike's wheel instead of the wheel on a wheel. the nine hundred watt motor will start the thing without pedals and pull it up any hill. If I weld the crank it will pass as a bike at first glance plus give me a place to put my feet.. I'm going to do some planning before I start it.