not quite right regarding development
But close.
Gear inches refers to the wheel diameter you would have if you were riding a penny farthing.
Development...distance traveled, is gear inches times pi.
assume a 700x25tire...
So, 26.4x 42÷16x3.1416= =217.71288inches traveled.
/12x60/5280=.206
.206 x cadence= mph.
shorter formula is this:
Gear inches times 0.00297 times cadence=speed.
just remember the .00297 and yer good.
Last edited by dave42; 05-15-15 at 07:10 PM.