Join Date: Dec 2004
Bikes: 92 Giant Sedona ATX Custom
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Gearing is a factor in feel as well (loading of the knees). I have not personally observed very much effect on Q factor so much as read about it, and I have somwhere in the order of 10 bikes, and periodic knee probs). If the difference is dramatic( like 6-10 mm) I could see it as a factor, otherwise I would look at saddle fore-aft position in relation to knee-over-pedal measurements.