Re: Frame sizing among the pros
Originally Posted by SCDETAILER
Uncomfortable keeps coming up, but who is to say unless some of the pro riders get on here and tell us, that riding in the position that they do is uncomfortable? Six hours in the saddle on a bike calls for comfort, so I would think that they are still comfortable even though it may not look like it to some.
I'm not a Pro, but I have raced as a Cat 1 since 1996. I can't speak for the Euro Pro's but a lot of the domestic Pro's I know, and have raced with, ride on custom bikes. Many of them are on customs to deal with sizing issues and/or to suit their specialty (ie sprinting). Most customs I've seen are not too different from "shelf" bikes, just small tweaks here and there. Some go to the extreme to try something different.
The most common changes you will see is seat tube angle, head tube angle, and top tube length. I would say that comfort plays a role, but from my experience most areas of severe discomfort come from physical irregularities that bike sizing just can't accomodate without making a significant impact on performance. These guys deal with a lot of regular pain and discomfort from riding 6 hours a day despite having custom bikes.
As for the question at hand... about ultra short seat tubes. I think the general school of thought is that you can acheive a stiffer/lighter frame in that configuration and let a longer, often carbon, seat post provide some compliance for the rider.