Originally Posted by
McBTC
'Despite various leg lengths for different heights, Track Cyclists commonly stick to 165mm or 170mm Crank Lengths. The shorter 165mm Crank Length encourages a greater pedaling efficiency as your pedaling cadence (RPM - Revolutions per Minute) will be higher.'
https://www.velodrome.shop
Odd. I was told sometime after I started racing on a velodrome as a 13-year-old kid that longer crank arms were prohibited for most track events because of the increased likelihood of pedal strikes and thus crashes, especially on short tracks. The minor difference in cadence is probably incidental. After all, a longer crank would give a leverage advantage for getting the jump in a sprint.