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Feb. 23, 2018, 4:24 a.m. -  Carbonzo

But the question remains; If a "bike-fitter" position your saddle relative to the BB (horizontally and vertically) - what is the influence of the STA? in other words, if your location relative to the BB is set to maximize wattage output, and set according to hip, knee and ankle angles, why is the STA matters? In any case a bike-fitter would rise and slide the saddle to it's best position - regardless of the STA, and so - I'm unable to determine its importance. in other words: if you have 10 bikes that differ ONLY in the STA, and all of them were fitted to have the saddle at the exact same height and horizontal distance from the BB - would you feel any difference between the bikes?

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