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A question on TdF bike design.(3 posts)

A question on TdF bike design.paulw
Apr 1, 2002 1:22 PM
I suppose this question applies to other races also.

I'm curious, I know why aero bars aren't allowed except for time trials. However, why don't they use the more aerodynamic TT bikes in the rest of the tour (with regular bars of course)? I know they're usually riding in a pack but this isn't always the case and I would think the aero advantage would be a benefit. Are the TT bikes that much heavier?
Ask Jackie Duranmr_spin
Apr 1, 2002 2:10 PM
TT bikes are generally optimized to go in straight lines on flat ground for relatively short time periods. That's not your typical road race. You say take off the bars, but what about the wheels? Anyone who puts a heavy disc wheel on is going to get dropped hard with the first attack. By the time you wind it up, everyone is gone.

Also, there aren't a lot of solo breakaways in races, which is the only situation where a TT bike makes sense. If you show up at a race with a TT bike, everyone will have a pretty good idea of what you intend to do. There's no way you'll get away!

If it made sense, Jackie Duran would be riding TT bikes exclusively and winning all the time.
re: A question on TdF bike design.brider
Apr 1, 2002 2:33 PM
The general geometry of the TT bikes doesn't lend itself to long days in the saddle. You don't see 100 mile TTs. The road geometry is optiimized for long-term comfort and power transfer.