MUCH higher power on one bike? - Page 2
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  1. #26
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    Quote Originally Posted by tlg View Post
    It's not a theory. It's physics. Yes, about 1 watt. In the scope of this conversation, it's not "MUCH higher power" of 20 watts

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    But part of the problem, albeit, a small part. Now factor in Stages % variance and the other things going on it all adds up. We don't know if the rpms, speed, gearing and tire pressure were all consistent etc. Perhaps the OP can post all the variables of the ride (i.e. rpms, speed, HR, temperature etc.) besides watts and we will have a better picture to go off other than just watts. Was everything exactly the same; I highly doubt it. There are many things that can affect a ride and we are only working with 1 of those variables.
    Last edited by Methodical; 02-03-2019 at 06:41 PM.

  2. #27
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    Quote Originally Posted by tlg View Post
    Not on a flat road. A 5lb heavier bike will reduce your speed ~0.04mph. Nowhere in the realm of 20watts.

    And on a 10% climb, a 5lb heavier bike requires 11watts more.
    Weight alone likely wouldn't do it but when combined with fatter cx tires, less aero bike frame/wheels and most significantly a much less aero position for the rider and 20 watts isn't that big a difference. At 20mph on equal weight bikes according to that calculator hood to drops alone is 39 watts, a mtb tire vs clincher is 49 watts, so the combined lesser extremes of weight, cx tires, position could easily be 20 watts.

  3. #28
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    Quote Originally Posted by taodemon View Post
    The fatter tires could be making it so you have to exert more watts for less speed......
    Wider tires have less rolling resistance, so that will cancel out the added weight and less aero profile of the tires.

    As TLG said, the OP should swap the power meters and do the conparison again.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  4. #29
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    Quote Originally Posted by Lombard View Post
    Wider tires have less rolling resistance, so that will cancel out the added weight and less aero profile of the tires.

    As TLG said, the OP should swap the power meters and do the conparison again.
    This would be true of like tires, but not so much if comparing road tire to CX tire or a lesser quality wider tire.
    Too old to ride plastic

  5. #30
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    Quote Originally Posted by velodog View Post
    This would be true of like tires, but not so much if comparing road tire to CX tire or a lesser quality wider tire.
    Yes, I stand corrected. A CX tire usually has a tread which will roll slower than a smooth tire of any width.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  6. #31
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    Quote Originally Posted by tlg View Post
    So you never answered.... can you swap the power meters between bikes?
    I can't believe you had to ask this question again. All the other talk about stack, reach, bike weight, tires, etc. is a waste of time until you swap the meters.

  7. #32
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    Quote Originally Posted by tomato coupe View Post
    ...talk about stack, reach, bike weight, tires, etc. is a waste of time until you swap the meters.
    ^^^^This.

  8. #33
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    Quote Originally Posted by GlobalGuy View Post
    ^^^^This.
    ^^^^^That.^^^^^
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  9. #34
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    Quote Originally Posted by GlobalGuy View Post
    ^^^^This.
    Quote Originally Posted by Lombard View Post
    ^^^^^That.^^^^^
    ^^^^The Other Thing.^^^^
    Too old to ride plastic

  10. #35
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    Quote Originally Posted by velodog View Post
    ^^^^The Other Thing.^^^^
    ^^^^^^^^^^^THIS^^^^^^^^^^^

    Seriously, OP - like, 5 of us have asked if you can swap PMs. The irony here is ironic - you're measuring the difference is measurements with measuring devices... swapping said measuring devices will answer the question. At least tell us you can't swap them (1x vs etc) so we'll stop asking ;-)

  11. #36
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    Quote Originally Posted by OldZaskar View Post
    ^^^^^^^^^^^THIS^^^^^^^^^^^

    Seriously, OP - like, 5 of us have asked if you can swap PMs. The irony here is ironic - you're measuring the difference is measurements with measuring devices... swapping said measuring devices will answer the question. At least tell us you can't swap them (1x vs etc) so we'll stop asking ;-)
    ^^^^^What he said.^^^^^
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  12. #37
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    "higher power", I thought this thread is about some kind of spiritual experience in cycling world. 👼

  13. #38
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    compare your HR and power on one vs the other, you might just be pedaling harder on one.
    Gravel Rocks

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  14. #39
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    Quote Originally Posted by Srode View Post
    compare your HR and power on one vs the other, you might just be pedaling harder on one.
    Pedalling harder usually results in going faster.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  15. #40
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    Quote Originally Posted by Lombard View Post
    Pedalling harder usually results in going faster.
    Sure, if you're comparing like bikes. A CX bike with cheap, slow tires ain't gonna be as fast as a road bike with high end supple tires. And if the difference is wide enough the road bike could be faster even if you soft peddle it.
    Too old to ride plastic

  16. #41
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    Quote Originally Posted by Lombard View Post
    Pedalling harder usually results in going faster.
    Not necessarily faster, but more watts - YUP!
    Gravel Rocks

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    Niner RLT9 (Gravel Bike)
    Trek Crockett

  17. #42
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    Did you'll scare the OP off?

  18. #43
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    Quote Originally Posted by Methodical View Post
    Did you'll scare the OP off?
    He finally swapped the power meters and rode off into the sunset... 20 watts faster

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