I've got an old 70s Road Columbia bike and I am interested in how I can convert it to a single-speed and/or upgrade some of the parts. Does anyone know where to start looking? How can I find out more information about this vintage roadie?
There are patches of rust under the original leather seat, and at the top of the original fork and where the stem meets the frame. It's got some weird metal stem contraption -- not the sleek angled one-piece ones we see today.
I'd also like to convert it to single-speed, since the shifters seem to have a problem: when I changed my tube recently, shifting gears makes the rear wheel torque out of alignment. Anyone else experience this?