Originally Posted by
79pmooney
Funny,I read the 1984 interview with Tom Kellog, Gary Klein and Jim Redcay last night. Klein said then that bicycles were in the third "era". First era - push bikes. Second era- pedals and the high wheelers. Third era- safety bikes - diamond frames and chain/shaft driven drive trains. That he had developed a new tubing for the closing chapter of the third era. That further evolution in metals, composites and ceramics were just more of the end of that era.
Magnesium -more tweaks to push this era a little longer. (The first two eras lasted about 15 years each, This one has gone on 140 years. Will any of us live to see the next?)
Ben
Perhaps e-bikes are the 4th era? They may not revolutionize the general layout of a bicycle, but change the way people ride quite significantly.