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Q-factor

From WikiPedalia
  1. In Fit-Kit © terminology, this is a factor based on the relative length of the femur compared to the rest of the leg. A large Q-factor is interpreted as an indication that the rider in question needs a frame with a shallower seat tube angle.
  2. Also, another name for the tread of a crank set. Grant Petersen originated this usage in 1991

Tread/Q Factor