Originally Posted by
TejanoTrackie
Nonsense! Does your lbs owner even know how to ride a bike? Very fast track racers use shorter cranks so they can spin the cranks faster and develop more power, which ultimately makes you go faster, not slower.
The opposite argument is that a longer crank arm will allow you to apply more torque (torque = force x dist) but to the op, its not enough of a noticeable difference so don't worry about it.