Quote:
A slight difference between bikes is a slight difference but sometimes enough to win or loose a TT
True, but I'm often surprised when watching the pros do TTs; how significant the victories are: rarely are they super close. And I'm not too sure how we can attribute those slight differences due to the bike; and secondarily, to the aero-ness of the bike. When you watch the difference between a really good TT rider and a not so good one, - it's almost NEVER due to the bike.
I agree with what Carl Spackler said below:
We've been through this debate before, and I don't want to revisit it, - especially up against TomA's good testing methodologies and science.
However, Carl has a great point in that Aero is not the only concern of a bike manufacturer in a TT bike; and certainly not in a road bike, - where Aero is EVEN LESS a concern than a TT bike. I believe that I'm riding the best manufacturer of road bikes, due to their front fork construction and ability to HELP the RIDER maintain a fixed line on the road. Even Time is making their road frames more aero and look like TT bikes.
To a certain degree, there is and end point where the cost of making the frame more aero outweighs other considerations, - like weight and handling.
Lastly, no matter what frame anyone rides, real world riding comes into play here. A pro time trialist has the ability to handle course idiosyncrasies much better than any of us. Aero position ALWAYS is more important than bike topology. It is better for us to ride a LESS AERO bike that is more stable, even with a more slack Aero position, and be able to stay in that position longer, than to have a more Aero bike and constantly be getting out of the aero position. We can say all things being equal, but all things NEVER are in the real world. Everything matters, but no one does everything, so we have to weigh the things that are most important first, then move on down the road. Ride harder.