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Old 05-27-08, 06:53 AM   #1
MHR224
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I'm torn between..

A race is coming up this Sunday. Major hills. over 5k feet of climbing for 26 miles the last 13 miles has about 3.5k feet of climbing. I am torn between using my Powertap which is a little heavier wheels set than my race X lite wheel set, by about 350grams.

Although I'd love to see my perceived effort on the Powertap I would also love the lightness of the Race wheel set instead.

Experienced riders what would you choose? The Powetap or a lighter wheelset?
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Old 05-27-08, 06:54 AM   #2
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is this a bit?
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Old 05-27-08, 06:57 AM   #3
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are you racing, or riding?
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Old 05-27-08, 07:02 AM   #4
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are you racing, or riding?
I am racing.
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Old 05-27-08, 07:04 AM   #5
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I am torn between using my Powertap which is a little heavier wheels set than my race X lite wheel set, by about 350grams.


Is 350 grams the wheelSET difference as implied? Use the x-lite front and PT back.
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Old 05-27-08, 07:04 AM   #6
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are you racing, or riding?
Doesn't matter.

The P-tap adds less than 0.5% - less than half a percent - to the weight combo of a cyclist. Appropriately pacing yourself is much more critical than saving that 1 part out of 200 in mass.



Plus you get to make cool graphs.
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Old 05-27-08, 07:08 AM   #7
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Doesn't matter.

The P-tap adds less than 0.5% - less than half a percent - to the weight combo of a cyclist. Appropriately pacing yourself is much more critical than saving that 1 part out of 200 in mass.



Plus you get to make cool graphs.
did i say it did?

btw - unless the OP plans on doing a solo breakaway (who knows, maybe s/he is), then IMO the pacing argument is somewhat moot.
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Old 05-27-08, 07:09 AM   #8
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Yeah, I'd race with the PowerTap.
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Old 05-27-08, 07:12 AM   #9
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did i say it did?
If it didn't matter why would you ask?

Also he said

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A race is coming up this Sunday.
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Old 05-27-08, 07:20 AM   #10
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If it didn't matter why would you ask?

Also he said
this is your first season racing, right?
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Old 05-27-08, 07:28 AM   #11
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Second season racing but my first with a Powertap
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Old 05-27-08, 07:31 AM   #12
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did i say it did?

btw - unless the OP plans on doing a solo breakaway (who knows, maybe s/he is), then IMO the pacing argument is somewhat moot.
But the cool graphs are NEVER moot. And not everyone has mad-skillz in MS Paint.
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Old 05-27-08, 07:34 AM   #13
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But the cool graphs are NEVER moot. And not everyone has mad-skillz in MS Paint.
MS-paint? Non.
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Old 05-27-08, 07:53 AM   #14
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Always fun to play with this.

Also fwiw, my choice would be the lighter wheelset.

Last edited by within; 05-27-08 at 09:09 AM. Reason: add my .02
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Old 05-27-08, 07:59 AM   #15
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go to the grocery store meat section, pick up a 1.5 pound package of ground beef with one hand, then pick up a 0.75 pound package of ground beef with your other hand, not much of a difference, eh? that's roughly the difference in weight you're talking about when comparing your wheelset choices, not much.

Use your PT wheel. You're a new racer, you'll benefit by learning what you do well vs. what you dont, and when. The post race "diary" that your PT will give you will be more valuable than the 0.75 lbs. you'd save by using the other wheelset.
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Old 05-27-08, 09:02 AM   #16
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Well lets just say a 700c wheel with tube and tire takes approx. 7ft to fully rotate one time in a straight line.

If my calculations are correct it takes 19611 approximate full wheel rotations to complete a 26 mile race.

with 350 grams of extra rotational weight at each revolution thats 15,000 lbs of extra rotational weight my legs will be enduring the whole race. Would you still use a Powertap?
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Old 05-27-08, 09:04 AM   #17
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Well lets just say a 700c wheel with tube and tire takes approx. 7ft to fully rotate one time in a straight line.

If my calculations are correct it takes 19611 approximate full wheel rotations to complete a 26 mile race.

with 350 grams of extra rotational weight at each revolution thats 15,000 lbs of extra rotational weight my legs will be enduring the whole race. Would you still use a Powertap?

wow, that's some impressive over thinking there.
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Old 05-27-08, 09:08 AM   #18
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Well lets just say a 700c wheel with tube and tire takes approx. 7ft to fully rotate one time in a straight line.

If my calculations are correct it takes 19611 approximate full wheel rotations to complete a 26 mile race.

with 350 grams of extra rotational weight at each revolution thats 15,000 lbs of extra rotational weight my legs will be enduring the whole race. Would you still use a Powertap?



Learn to coast
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Old 05-27-08, 09:10 AM   #19
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putting that much analysis into a 26 mi. race confirms that you're a very new racer, which strengthens my opinion that you should use the PT.

that many calculations confirms that your nerdy enough to love the post race analysis that the PT gives you that you wouldnt have with out it.

use the PT.
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Old 05-27-08, 09:12 AM   #20
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wow, that's some impressive over thinking there.
I do what I can to get a competing edge.
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Old 05-27-08, 09:13 AM   #21
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Learn to coast
You really can't coast in this race.
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Old 05-27-08, 09:22 AM   #22
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I do what I can to get a competing edge.
think that much during the race, and you won't have an edge, competitive or otherwise.
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Old 05-27-08, 09:28 AM   #23
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think that much during the race, and you won't have an edge, competitive or otherwise.
Yeah, I think you are right on that one. Just a little perspective on the course here is a map of it. http://www.gmap-pedometer.com/?r=1910195 It's actually not as easy at it may sound or look.

Starts of with moderate to hard rollers progressively turning into an all out climb approximately 5-6% grade all the way up to the finish. This will be one hard race for me as I am barely at a 3.7w/kg for 20 mins now.
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Old 05-27-08, 09:48 AM   #24
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The powertap would have 2 uses. 1 to look at post race and analyze.... 2 to pace yourself up the climbs. 2 really depends on in if you are truly racing or just trying to finish a race. If you are really racing then you will most likely be following the pace of the leaders on the climbs and your PT will only show you what you had to do to keep up. Outside of time trials, I have used my PT during a race only one time this year and that was going off the front and knowing how much power I could hold. That being said, I always race with the PT even though it is a little heavier because at some point I might need it and I am a graph dork.
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Old 05-27-08, 09:58 AM   #25
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MS-paint? Non.
Etch-a-sketch?
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