on my soma I was 50:16, which suited me as I don't really like spinning heresy I know, but there you go, and I'd just ride in that gear all day long, thought it might be a bit big for fixed as I wouldn't have the coasting breaks so went 48:16 smaller, but more manageable, still a bit nervous dinking in and out of traffic and filtering really slowly can be a bit of a pain - only been riding fixed for a week so hopefully with time I'll feel more secure, friend whose been riding fixed for a couple of years is on i think either 48:18 or 46:18, says it gives him better slow speed control.
my tuppence is get a gear slightly smaller than what you turn on the geared to allow for the lack of ability to coast, ie rest legs.
on my soma I was 50:16, which suited me as I don't really like spinning heresy I know, but there you go, and I'd just ride in that gear all day long, thought it might be a bit big for fixed as I wouldn't have the coasting breaks so went 48:16 smaller, but more manageable, still a bit nervous dinking in and out of traffic and filtering really slowly can be a bit of a pain - only been riding fixed for a week so hopefully with time I'll feel more secure, friend whose been riding fixed for a couple of years is on i think either 48:18 or 46:18, says it gives him better slow speed control.
my tuppence is get a gear slightly smaller than what you turn on the geared to allow for the lack of ability to coast, ie rest legs.