Calculating the desired reduction.
This is for a 26 inch tire. If you want this conversion for a different tire multiply you tire diameter by 3.14 then divide that by 12. Insert that # where I have 6.7.
F=Desired MPH
E=feet per hour
D=Feet per Min.
C=RPMS at the wheel
A=Motor RPMs
B=reducion needed
Fx5280=E
E/60=D
D/6.7=C
A/C=B
This is for a 26 inch tire. If you want this conversion for a different tire multiply you tire diameter by 3.14 then divide that by 12. Insert that # where I have 6.7.
F=Desired MPH
E=feet per hour
D=Feet per Min.
C=RPMS at the wheel
A=Motor RPMs
B=reducion needed
Fx5280=E
E/60=D
D/6.7=C
A/C=B