Originally Posted by Retro Grouch

A solution in search of a problem. The big problem with bicycles is it's wimpy motor. The 2 wheel drive bicycle uses power robbing components to solve a traction problem that seldom arises.

There was a fellow in the St Louis area producing 2 wheel drive bicycles around 15 years ago. His used a pair of bevel gearsets and a flexible shaft to connect the front and rear hubs. Ultimately some fellow bought up his stock and tried to find a market for them. I owned a shop at that time and told him I wasn't interested so he waited until I was out to drop off a boxed bike. After multiple failed attempts to contact him I eventually dumpstered the bicycle. About 6 months later he came in to ask about it. He got real mad. That's when I found out he was an attorney. I must have been on pretty sound ground legally because I never heard from him again.