How does a two wheel drive bike work? A two wheel drive bike is a bike without a motor that can still turn. The front and back wheel both get power. How does a bike with this type of drivetrain work?
The obvious answer is a linkage up to the head set, and down to the wheels. Hydraulics would be viable as well. However any power transfer system will lose power, which cyclists do not have in excess, which is probably why it has not been done.