Originally Posted by
michaelscycles
Your idea isn't that original. Huffy made a Pro Thunder Z2 in the 80's that was a two speed. What was kind of unique is the shifter. The right grip twisted like a motorcycle throttle to shift.
wow. Crazy chain line too..
http://bmxmuseum.com/bikes/huffy/17815
I'm a little confused about the tension relief happening on the top on the chain... I'm guessing that portion of the tensioner was fixed to the frame and stationary.
Edit: I think the bmxmuseum guy has his derailleur set up wrong, it should look like this:
http://i616.photobucket.com/albums/t...s/100_2516.jpg