Originally Posted by
reddog3
Take away (for me)
"So switching from 175 to 172.5 mm would likely have little measurable or even undetectable benefit. The main point is that you would be safe switching to shorter cranks for aerodynamic reasons, as proposed by Cobb, without fear of decreasing efficiency. In fact, research implies your efficiency would increase somewhat.”
Seems to be based on the linear velocity of pedal, which for a given cadence is higher with longer crank.
scott s.
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