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time trial bike setup question(6 posts)

time trial bike setup questionDougSloan
Sep 10, 2002 7:29 AM
I didn't know which forum to post this in, but essentially it's a component question, so here goes.

I have a Cervelo P3 with Profile Carbon X integrated aerobars, with no stem spacers. This puts the pads about 4 inches below the saddle, and hardly any ability to adjust things. Aerodynamically, this should be an excellent setup.

This seems to work great for 10 mile time trials, but for much longer distances, it becomes a bit taxing on the upper body, especially the neck.

I am considering switching to a Look Ergo adjustable stem and cowhorns with clip on bars (won't look nearly as cool, though ;-( ). This would allow nearly infinite adjustment throughout any range I might want. I'm thinking of doing this to use the bike for much longer distances, like 508 team or solo riding and 24 hour time trials. I figure that the adjustability and resulting comfort and potential power increase might offset worse aerodynamics and weight. I might do some testing on the Computrainer to check any power change.

Anyone want to comment on the idea? Is positioning far more important than a little (presumed) extra drag and weight? Any other ideas? Thanks.

re: time trial bike setup questionfeathers mcgraw
Sep 10, 2002 7:56 AM
Is your fork cut so short that you can't add spacers? Would a new fork cost less than the ergostem and cowhorns and clip ons?
steerer cut to minimumDougSloan
Sep 10, 2002 8:01 AM
The steerer is cut all the way down. Not a matter of cost, though, but speed and comfort. I'll do whatever it takes. Plus, even a new fork and spacers would not give easy adjustment. Thanks.

you have bad positionstr8dum1
Sep 10, 2002 8:53 AM
your upper body should be relaxed. try moving the extensions in some. i would just ride more miles in that postion to improve flexibilty. if you got the ergo stem, all you are going to do is raise your postion. might as well just use spacers. its pretty easy to just loosen 2 bolts to move spacers around.

I wouldnt ride aggro TT position for more than 40k anyhow. Look at most tri geeks bikes, more spacers and riser stems than you can imagine. Must be a reason (cant fathom though)
I'd go with comfortColorado Ron
Sep 10, 2002 11:51 AM
and give up a little weight, etc. A perfect aero postition is something we all shoot for with a TT setup but I'll give up a little for a more comfortable ride.

By the way, I use the Ergostem and think it's great. It's surprisingly stiff. I recently saw a new one sell on e-bay for around $80....far less than I paid for mine.
re: time trial bike setup questionalansutton
Sep 10, 2002 3:20 PM
For TT's over 50k, I prefer my standard road bike with clip-on aero bars. Although I'm very flexable and am quite comfortable on my TT rig, I just can't seem to maintain the power on it like I can on my standard setup.
Try putting a rear disk and aero front wheel on the c40 and you'll be suprised that it's no slower than the P3.