- Mar 12, 2009

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SlantParallelogram said:Since you couldn't even get the simple unit conversion correct, I didn't even bother to check the math in the rest of your equations, which I am assuming is probably also totally wrong.

You are right! My conversions were wrong. I reversed the operation of the conversion factor of 3.6. My mistake and I admit it. Lack of attention = stupid mistake. Here is the correct math...I hope

81kg (~180lbs Bike plus rider) X

**0.56m/s/s**(2km/h/s this is hard acceleration) =

**45.36 Newtons**

82kg x

**0.56m/s/s**=

**45.92 N**

**45.92N - 45.36N = 0.56N and 0.56N/45.92N = 0.0122 X 100% =**less force to accelerate the 1kg (2.2lb) lighter bike. Of course this ignores wind resistance which increases the total force required, regardless of mass and thus further reduces the positive effect of a lighter bike in terms of acceleration.

__1.22%__So. Does 1.22% really make a noticeable difference? Now do the calculations for a few hundred grams that lighter wheels makes and you are in the range of 0.2%. Oh yea...that is some serious speed.

We since you will not read any of this SlantParallelogram because you have decided what reality is and no amount of evidence will convince you otherwise. And since my making a mistake,

__that has no effect of the conclusion__, obviously proves you right. You did not bother to put up a correction that shows the difference between bike and in stead decided to use a weak 'straw man' argument, can I assume that you are in the middle of some serious cognitive dissonance? Keep substituting your delusion for reality if it helps you win the tour next year. I can admit when I am wrong...