There have been several 2wd conventional MCs built. Yamaha had an experimental fluid drive, more than one company have tried mechanical drives, usually down one fork leg. Knowledgeable folks have told me the traction out of a sharp turn, where you would heavily weight the front wheel, is great. I question the rest of the utility because you so often want the front wheel light. Perhaps on a downhill, having the front driven would add stability? In sand it might be great too. To my knowledge, no one has done a road racer.
Now a three or four wheeler might make more sense with hub motors. You still have the complexity, overall weight, and unsprung weight problems though. Theres just not that much wrong with drive-shafts and U-joints in conventional vehicles. In bikes I still say the front-drive is not useful, but then I've never ridden a 2wd bike. John Jeffrey Blamey wrote: > I have seen a two-wheeled two-wheel drive motorcycle
