No. there are quite a few other places where you can add an electric motor to a bicycle. However, the hub motor is quite probably the one which requires the least amount of changes to the rest of the bike.
To build a complete set for 24 bicycles, you would need 96 bicycle wheels.
He never did. The drawings from Leonardo da Vinci which supposedly were of a bicycle has later turned out to be faked.
Do a net search for "bicycle frame builder" + your area code. Expect to pay a fair bit for it.
There are several DIY recumbent bicycle plans available online that you can use to build your own recumbent bicycle at home. Some popular options include the Atomic Zombie Warrior Recumbent Trike, the Easy Racers Gold Rush Replica, and the Cruzbike Vendetta. These plans typically include detailed instructions and materials lists to help you build your own custom recumbent bicycle.
If the rubber is rigid enough, I believe it is possible.
an electric motor can be build with over 2000 rpm,by increasing the supply frequency.
electric genearator
Bicycle Making~APEX
Well, they can't be built out of dreams and wishful thinking.
Get an instruction booklet!
Becacuse it's hard to build stuff out of liquids and gasses.
A model of watermill can be made by fixing a pinwheel and an energy converter through constant flowing water.