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Old 04-01-08 | 11:50 PM
  #3271  
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Snuffleupagus
Aut Vincere Aut Mori
 
Joined: Nov 2004
Posts: 4,166
Likes: 1
From: Chapel Hill, NC

Bikes: Irish Cycles Tir na Nog, Jack Kane Team Racing, Fuji Aloha 1.0, GT Karakoram, Motobecane Fly Team

First time on the TT bike in several months, did an 8 mi club TT in rain and light wind.

Results? Uh, I "won" beating the next guy by 1:42, but there were only 5 of us

TT effort:
Duration: 18:00
Work: 369 kJ
TSS: 34.1 (intensity factor 1.066)
Norm Power: 341
VI: 1
Distance: 7.952 mi
Min Max Avg
Power: 0 691 342 watts
Cadence: 37 183 107 rpm
Speed: 10.6 32.2 26.5 mph
Pace 1:52 5:39 2:16 min/mi
Hub Torque: 0 324 86 lb-in
Crank Torque: 0 1409 284 lb-in

I need to do some work on my position, as what I've got now is essentially a game of "how low can you go?" but all in all I'm very happy with the numbers I put out, as it's a pretty extreme position. I think I need to retest FTP on the road bike at some point soonish.

I need to work on pacing more, as I feel like I could easily have held 350w if not for going out of the gate too hard.

As a side note, it's interesting to compare my actual results with what the Kreuzotter calculator predicts (http://www.kreuzotter.de/english/espeed.htm) It's very close, but I think my position is better than par - I ran a predicted 26.2mph, and a stop-watch actual 26.6mph. This is a great tool to use to look at how different variables effect your riding.

For example, say I want to try to hit 30mph (29.5 plugged into the calc to adjust given the previous speed underestimation), assuming I can reduce drag by 5%, and my weight by 5% I'd need to produce something on the order of a mind boggling 456 watts for 16 minutes and 16 seconds. That's 110 more watts to go about 3mph faster. That just illustrates how much power is devoted to overcoming wind resistance, and the importance of aerodynamics at speeds approaching 30mph on a bike.

Last edited by Snuffleupagus; 04-02-08 at 12:45 AM.
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