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Old 05-23-17, 08:07 AM
  #42  
merlinextraligh
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Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike

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Originally Posted by _ForceD_
In your "all things being equal" consideration...does that include identical tires, and equal inflation, on all bikes?
One thing that I didn't see any of the egghead formulas include is rolling resistance of the tires involved.

Bicycle Rolling Resistance | Rolling Resistance Tests

Dan
In the Op's example (200lb rider vs 100lb rider) the weight of the rider trumps tire rolling resistance by a very wide margin, same for bearing friction etc.

I'll leave it to our geek friends to give you the numbers, but real world observation easily confirms this.
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