If you haven't ridden this bike you are going to love that Crane derailleur. I use on on my Schwinn Volare the Crane was incorporated to the Dura Ace group in 1978 I think it was. Shifts like its indexed instead of friction.
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(Life is too short to play crappy guitars) 2006 Raleigh Cadent 3.0, 1977 Schwinn Volare, 2010 Windsor tourist. ( I didn't fall , I attacked the floor)