Gearing & speedTarget pinion
Find a target pinion
Solve for pinion from a target speed, then check nearby sizes.
Target & setup
mph
mm
T
:1
%
Spur and internal ratio are optional for a target FDR; required for pinion candidates.
Motor RPM basis
rpm/V
V
Available pinions and range
T
T
T
Optional: comma-separated sizes you own. Empty gives the floor and ceiling candidates.
Calculated target
Fractional pinion
?
Enter a positive target, tire size, and motor RPM basis. Growth must be nonnegative; any pinion limits and available sizes must be positive whole numbers in a valid range.
Arithmetic does not establish torque, power or fitment. Check pitch, bore, centre distance, mesh and mount range separately.