Nothing about your set up is very good. You are very much overgeared for streetriding, no matter how much you think it feels good. It is unsafe and bad for your knees, plus it will be bad for your racing. 52/18 is about right for commuting but it won't help with racing.
Locktite on a fixed cog is not safe, put a lockring on if you are riding on the street. On the velodrome you do not need a lockring because you will never do anything but soft pedal or go up track.
As a general rule for all forums, if you ask for advice and then don't follow it you will stop getting the advice.
Last edited by Kayce; 07-02-12 at 09:42 PM.