I have a 1972 Schwinn Super Sport road bike that somebody converted to a fixie. It runs nicely for $15, but there's one major problem I've just run into: I can't get the lockring tight enough.
See, whoever did the conversion put a fixed gear onto a freewheel-thread hub—one set of regular threads, no reverse threads—and then put a lockring on after that. I'd been fooling around with it one day when I realized that it seemed to "slip" a bit when I was trying to skid. This is because the lockring had come loose and my gear was unscrewing itself a bit before hitting the lockring. I took the wheel off and tightened it as well as I could, but after 5 minutes of riding it came loose again...
I'm wondering if this setup really is suicide or if there is some way to make the lockring really lock. Any tips?
FYI my purpose for this bike was to have a fixie that would run nicely so that I could get a feel for a fixed gear (This is my first), and then maybe spend more money on a more expensive bike if I liked it. Soooo, I'd like a solution that's under $10..
Attached are pictures of the parts, assembled and disassembled.