Originally Posted by
Gareth
4 wheel drive pedal powered quad, with freewheeling style jack shafts (at the moment) to the front wheels, (in-house developed) differential to the rear wheels, with a manually engaged "lever on, spring off" diff lock.
Lockout lever and latch manual mechanically selectable steering modes: Front only wheel steer, rear only wheel steer, and all wheel steer.
That sounds really complicated.
That said, it sort of makes me wish I had a 4x4 "bike" just to see all the bits doing their thing while I drive over things.