A two-wheel drive motorcycle having a drive train that supplies power to
the front wheel and includes a series of rigid shafts or other
internalized drive systems. The front wheel drive consists of components
located on the axis of steering within the head tube and positioned
symmetrically in a counterbalancing fashion within the front fork in
order to counteract the torque reactions from the rotating front wheel
drive while providing a full range of steering. The front wheel drive
lengthens and shortens in parallel with the shock-absorbing front fork.
An engagement clutch, a one-way hub, and torque limiting clutch
operatively engaged with the front wheel drive are also disclosed.