Thread: Wheel circumference setting wrong, which way is speed off?
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Old 04-16-14 | 05:39 PM
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JerrySTL
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Bikes: Giant Defy Advanced, Breezer Doppler Team, Schwinn Twinn Tandem, Windsor Tourist, 1954 JC Higgens

Originally Posted by cplager
Yes, your current speed reading is too high.

For the rollout, you should be sitting on the bike as this slightly reduces the circumference...
Slightly? Not in my case.
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