Originally Posted by
Brian Ratliff
The difference in chain speed is about 7% (4800/4500 = 1.0667). Kinetic energy is proportional by the square of velocity, which means there is about 14% more energy stored in the large-large drivetrain over the small-small. With a heavy sprint chain like the Izumi V, it's something that might be felt.
ok so- clearly i was out-mathed!!!
im still not buying it, and i don't think you do either ("its something that might be felt"!!??)
This side of the debate- is a big/big combo easier to hold at speed than a small/small, is actually fairly easy to test. Ill have to lengthen a chain but then i can play around with 48x16 versus 51x17 both at 81"- if i get any data thats worth looking at ill share it.. i could at least have some power files from roller sessions on both gears by the weekend..
BabyPuke-
im strictly a 14t guy these days... aside from warming up on a 16t