Originally Posted by Biker395

I've heard all kinds of explanations for this ... most of which revolve around the fact that we aren't just point masses dutifully chugging up the hill at a constant speed and direction. We make zillions of little steering and balance corrections, and the torque we apply to the bottom bracket is not constant. Since we aren't going a constant speed, but are in fact constantly accelerating and decelerating, differences in mass are magnified over what you might expect, and a little weight goes a long way.

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