Originally Posted by bgoetz .
Thanks bobcat. I do all of my own work on my bikes, but everything I do is new and simple to work on. When it comes to old stuff and single speed setups yeah, I am clueless. I have a good resource and have found a old free frame, so I think I am headed in the right direction.
I'm sorry for underestimating your ability, then.
Getting the drivetrain sussed out is the tricky part. An English or Italian threaded frame with horizontal dropouts and 120 mm rear hub spacing is the most straightforward way to go because this most closely resembles the configuration of a real track bike. For the cranks, bottom bracket and wheels I recommend buying new components designed for single speed rather than trying to make old road components fit.
Inexpensive alloy single speed crankset that will be compatible with a JIS square taper, ISIS, or Octalink bottom bracket are available all over the place, including your local shop if they have an account with J&B Importers. The people who sell you the crank will help you select the appropriate BB. Basically, the BB spindle needs to be long enough that the chainring doesn't hit the chainstay but short enough that you can create a straight chain line to the cog on the rear wheel.
A single speed wheel with 120 mm spacing isn't hard to find for about $100-200, depending on the quality. Most of these will have flip-flop rear hubs, a fixed gear on one side and threading for a freewheel on the other. If you're going the freewheel route, you'll need to buy the freewheel. Here's a tip. Most of the gaudy colored deep-dish fixie wheels you see online are ridiculously heavy and cheap. Look for 700c wheels with 32 spokes, 3-cross lacing, wheels that look like normal road wheels except for the hub. They will attach to the frame using nuts instead of quick-release skewers. Get used to carrying a 15 mm spanner with you for fixing flats
Use a 1/8" pitch single-speed chain to connect. Use bottom bracket shims behind the drive-side cup to tweak the chain line, if necessary. Add other components and accessories as you wish. Select judiciously and you might end up with something as elegant as this.
Any questions?
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