Quote:
Originally Posted by Kontact
But the BB would flex in the same direction if you pulled up on the opposite crank. The flex isn't a result of a simple stepping on the crank, but because that's the only direction the BB can go when it is trapped between the power stroke and the chain.
If it was just downward force, the BB would flex most at 6 o'clock, not 3 o'clock.
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It flexes the most at 3 oclock because that's when the leg is applying the most force