Suggested Gearing 45 inch gear for Advanced Riders Flat
Land Riders  take note of the climbing chart
! InchGear Calculations Explained Here is the way to calculate the ingear on a bike: Divide the front chain ring teeth
by the rear cog teeth and multiply by the wheel size. Example: 39 front divide by 26 rear x 27 ( road bike ) = 40.5 inchgear If you multiply the ingear by the
constant (pie ) 3.1415 , you will get the distance traveled in inches,
with one complete pedal revolution. Example: 40.5 x 3.1415 = 127.23 inches (Bike travels with one complete pedal rev) You can see by this that the smaller the ingear the more mechanical advantage you have, but the bike speed or movement per pedal revolution drops. Note: The wheel size is not a
consideration when computing the distance traveled with one pedal
revolution. The number 27" for a road bike is
approximate since tire sizes vary and today's bikes use 700 C wheels.
In  Gear x Rev (RPM ) x Pie (3.1415) divide by 12, divide by 88 ( this gets you to MPH) equals speed in Miles per hour. Example going up Mitchell in a 40.5 ingear at 60 rpm pedal speed: 40.5 x 60 x Pie ( 3.1415) divide by 12, divide by 88 = 7.22 MPH. :) John
