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Old 01-27-07, 09:55 PM
  #13  
merlinextraligh
pan y agua
 
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Join Date: Aug 2005
Location: Jacksonville
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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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If you feel compelled to test clibration against a car, have the carmeasure exactly a mile, and then see ifthe bike computeris highor low: don't try to match speed by holding on or otherwise.

But realize car speedometer calibrationis not that accurate. One, tire size (which might notbe OEM, or may be an OEM option not calibrated for) affects it, and Two, manufacturers often purposely make speedomters read a tad high.
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