By Bobby (country, Texas) on Jun 3, 2013
Comments: Itis little use to me to know the revolution but knowing distance in miles or kilometers is helpful to lgauge my workouts in the ouse versus outdoors. So the calculation is the radius of the wheel arm which is 8 inches on my unit times pi divided by 12( to obtain feet per rev). Then divide the value for feet of one revolution into 5280 feet per miles which yields about 1242 revolution per mile. Otherwise great machine,need better foot adjustments.