Originally Posted by
jsutkeepspining
Also i like my 39 because when im in a flat area i can spin all day going 40kph. its pretty funny to be in the middle of a paceline just going along in your 39/14 (as you know you dont want to go to the 13 or the 12, too much chain rub).
Isn't this exactly the same thing as a 53/19? Or a 50/18? If you are in a flat area, just spinning along at 24 mph, why wouldn't you be in the big ring with room to pop up or down, instead of all down on your 39?
That is why I said earlier that crank size only matters, IMO, at the very largest end and very smallest end. Not that I like the 16 tooth jump of a compact, but I have found no practical difference.