There stats for speeds from each wheel sizes.

Like from a average pedal speed on each gives what speed?

There stats for speeds from each wheel sizes.

Like from a average pedal speed on each gives what speed?

um, what?

I think heās looking for average speeds per unis based on wheel size.

So:

20" average speed = ?

24" average speed = ?

ā¦

36" average speed = ?

etc.

Except for personal accounts, I wouldnāt think thereās anything āofficialā due to the number of variables involved.

Circumference of a wheel = Pi x diameter

Pi = 3.142 approx.

A mile = 1760 yards = 1760 x 36 inches = 63,360 inches in a mile

20 inch wheel = 62.8 inch circumference

24 = 75.4 inch circumference

26 = 81.7

28 = 88

29 = 91.1

36 = 113.1

Revolutions per mile:

20 = 1009

24 = 840

26 = 775.5

28 = 720

29 = 695.5

36 = 560.

Divide that by 60 minutes

1 mph =

20 = 16.81 rpm

24 = 14

26 = 12.95

28 = 12

29 = 11.6

36 = 9.33

So take your desired speed, multiply it by the number in the right hand column to get your required rpm

e.g. 9 mph on a 24 =

14 x 9 = 126 rpm.

what he said;)

newtouni has a software program called UniCalc (listed under IJ Software). It can calculate speed based on wheel size and RPM, or RPM based on speed and wheel size.

Alternatively a simple spreadsheet could also do the job based on the numbers from Mikefule.

A comfortable speed varies depending on the person, crank length, and other variables. A general rule of thumb would be the following. A cadence (RPM) of 100 to 120 is a comfortable cadence for many as a cruising speed. A cadence of 150 or more is fast and takes effort to maintain. A cadence of more than 170 gets to be a sprint and not a speed that youād maintain.

You can calculate expected speeds for those cadences for different wheel sizes.