Originally Posted by Rhinelander

I've seen some real naturals recently. Little movement in the saddle.. took me 6 months to learn when I was 14. Every other ride, our trainer wouldn't let us push anything above 52/15 to acquire what he called a "round" tread. Designed to keep our butts quiet which helps the transfer of energy to the legs. And practically because most sanctioned european B youth classes (14 to 16 if I remember right) were restricted to those gears and rear derailleurs were checked for that (if you had anything below that on your rear wheel), as the 52 max on the front end.