Originally Posted by recneps
I ran in a TT seris last year fixed. I rode a track bike though with track cranks and a 1/8" chain.
gearing with 52*15. It was a 10 miles perfectly flat TT I did it in about 25 minutes, I was also in horrible shape. a teamate of mine did it in the 23s and the record is somewhere around 22.
Did you ever do the same TT on a geared bike. I'd be curious, the time difference in any, under similar circumstances. My guess is that even on a flat course the geared bike would be a little faster.
However, the momentum effect, might help, particularly when you're about to die, so its possible, a fixed gear bike with comparable aerodynamics could be faster, but I doubt it.