I think that it depends on your legs, but basically big gears (lets say anything over 42 - 16) on fixed hurt your knees, unless you are very strong.
Fixies aren't bad for your knees, repeatedly stressing the quad, so that the micro-tears form bigger and bigger lumps of scar tissue, eventually constantly irritating the patella (chronic knee pain) is. Big gears can do this. But you can ride a small gear fixed.
I ended up riding 42 - 20. I have worked on 42 - 18. Spinning is cool. Spinning is the thing. Spinning rocks. Spin to Win!
I think that it depends on your legs, but basically big gears (lets say anything over 42 - 16) on fixed hurt your knees, unless you are very strong.
Fixies aren't bad for your knees, repeatedly stressing the quad, so that the micro-tears form bigger and bigger lumps of scar tissue, eventually constantly irritating the patella (chronic knee pain) is. Big gears can do this. But you can ride a small gear fixed.
I ended up riding 42 - 20. I have worked on 42 - 18. Spinning is cool. Spinning is the thing. Spinning rocks. Spin to Win!