Where do you live? Another Schwinn (a 1986 road bike) has followed me home and now it needs a new one because it won't fit any of us here. It has a 21"/53 cm frame, a cromolly frame, and mid range components. I could convert it to a triple for you, or you could do the work.
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Bob
Enjoying the GA coast all year long!
Thanks for visiting my website:
www.freewheelspa.com