Originally Posted by
79pmooney
But pi makes the in your head math harder than the simple 27" (or 26 or 24; all numbers that often simplify with the cog teeth nicely).
How far I travel across the ground (gear development) with each pedal revolution is something relatable to the activity of cycling. How the gear ratios and wheel size of a multi-geared bicycle compare to the diameter of the front wheel of a penny-farthing bicycle (gear inches) is archaic.