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  1. #1
    Whoopdidydooo
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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?

  2. #2
    powered by Racer Ex gsteinb's Avatar
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    is this a bit?

  3. #3
    . botto's Avatar
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    are you racing, or riding?

  4. #4
    Whoopdidydooo
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    Quote Originally Posted by botto View Post
    are you racing, or riding?
    I am racing.

  5. #5
    Cat WTF
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    Quote Originally Posted by MHR224 View Post
    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.

  6. #6
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by botto View Post
    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.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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  7. #7
    . botto's Avatar
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    Quote Originally Posted by ElJamoquio View Post
    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.

  8. #8
    Making a kilometer blurry waterrockets's Avatar
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    Yeah, I'd race with the PowerTap.

  9. #9
    ..... Jynx's Avatar
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    Quote Originally Posted by botto View Post
    did i say it did?
    If it didn't matter why would you ask?

    Also he said

    Quote Originally Posted by MHR224 View Post
    A race is coming up this Sunday.

  10. #10
    . botto's Avatar
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    Quote Originally Posted by Jynx View Post
    If it didn't matter why would you ask?

    Also he said
    this is your first season racing, right?

  11. #11
    Whoopdidydooo
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    Second season racing but my first with a Powertap

  12. #12
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by botto View Post
    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.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

    Bikeforums 'Group Buy': Kinlin Rims, Sapim/DT Spokes, Formula/Bitex Hubs


    "The only good race pace is suicide pace, and today looks like a good day to die."
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  13. #13
    . botto's Avatar
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    Quote Originally Posted by ElJamoquio View Post
    But the cool graphs are NEVER moot. And not everyone has mad-skillz in MS Paint.
    MS-paint? Non.

  14. #14
    Senior Member
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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

  15. #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.

  16. #16
    Whoopdidydooo
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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?

  17. #17
    . botto's Avatar
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    Quote Originally Posted by MHR224 View Post
    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.

  18. #18
    Cat WTF
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    Quote Originally Posted by MHR224 View Post
    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

  19. #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.

  20. #20
    Whoopdidydooo
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    Quote Originally Posted by botto View Post
    wow, that's some impressive over thinking there.
    I do what I can to get a competing edge.

  21. #21
    Whoopdidydooo
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    Quote Originally Posted by cat4ever View Post
    Learn to coast
    You really can't coast in this race.

  22. #22
    . botto's Avatar
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    Quote Originally Posted by MHR224 View Post
    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.

  23. #23
    Whoopdidydooo
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    Quote Originally Posted by botto View Post
    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.

  24. #24
    Ninja don't wear flipflop king-tony's Avatar
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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.

  25. #25
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by botto View Post
    MS-paint? Non.
    Etch-a-sketch?
    Reacting is mind candy; it requires no thought. Thinking is tedious.

    Bikeforums 'Group Buy': Kinlin Rims, Sapim/DT Spokes, Formula/Bitex Hubs


    "The only good race pace is suicide pace, and today looks like a good day to die."
    -Steve Prefontaine

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