Yeah, I know this is a totally dorky thing to ask, but when I was at the track last night I got into a conversation with an old, experienced trackie (who seemed to totally know what he was talking about) and as we got talking about gearing, he said that he'd "prefer", with my height and build (about 5'9", haven't weighed myself in a couple years, but would estimate about 145-150lbs.) that I be riding with a smaller size chainring. In other words, e.g., instead of riding 48x15 it would be BETTER for me to ride 45x14 because of the front plate being smaller, even though the gearing is essentially the same.
My question is why? Why would he say this? How does height/build affect this? I would have asked him, but we were both on the way out and I was in kind of a hurry and didn't get the chance. Maybe next time if no one here has any answers.