View Full Version : TT Bike position


dave11
03-09-2007, 07:00 AM
I have a new TT bike I am in the process of setting up. Any suggestions for some good resources on optimizing my position?

I have TT'd a fair amount in the past, and have done it with clip-on aero bars on my road bike, with some minor seat adjustments (seat forward, upward, and nose slightly tipped down).

I will still do primarily road racing, but want to have the TT bike set up to get some regular rides on it and dial in my position.

I don't know if I should try to stick closer to road position, or try something more drastic on the TT bike.

Any help is appreciated.

Thanks.

shawndoggy
03-09-2007, 07:15 AM
take some pics of yourself in your tt position and post them on the performance forum on biketechreview.com. You'll get plenty of constructive feedback from people who geek out about saving 3 seconds over 40K.

Kerry Irons
03-09-2007, 09:37 AM
I have a new TT bike I am in the process of setting up. Any suggestions for some good resources on optimizing my position?

I have TT'd a fair amount in the past, and have done it with clip-on aero bars on my road bike, with some minor seat adjustments (seat forward, upward, and nose slightly tipped down).

Generally you want to move the saddle forward, and of course up as a result. As to the optimum position, that is going to have a lot to do with your personal flexibility and the handling of the bike. You may have noticed that there are a lot of different positions used by the pros, and one reason for this is that some riders are built different than others. The thing to do is try a position and see what it does for you, both from a comfort and a speed aspect. The general rule is that narrow is better than low. Narrow and low both can make for breathing difficulties, and low can make for pain and difficulty applying power. You need to dial in the position and ride it enough to know that it works for you.

shawndoggy
03-09-2007, 10:32 AM
The general rule is that narrow is better than low.

I'm not a wind tunnel geek, but I'm pretty sure you have this backwards, Kerry. I'm pretty sure getting low can make a bigger (potential) difference to frontal area than getting narrow (which really just means moving your elbows in a few cm).

Stated another way, there's a reason that this position is no longer UCI legal:

http://www.richardpettinger.com/cycling/graham_obree/superman

dave11
03-23-2007, 05:53 AM
thanks for the tips on the TT position. I went to the shop and had a fit done on it, feels pretty good.

One question I had: how do the USCF regs impact TT position? I recalled there is a 5cm saddle setback requirement for road bikes. I could not locate that rule anywhere. I am assuming that doesn't apply to TT bikes though (?)

any help is appreciated

slidecontrol
03-26-2007, 12:43 AM
AFAIK the 5cm rule applies to TT bikes (us triathletes do not have this limitation though)
that is thetip[ of the saddle being 5cm behind the BB