Drivetrain Calculator
Gearbox / Gear Train
N
OUT
/ N
IN
per stage · multiplied through
ω
out
= ω
motor
÷ ∏(N
driven
÷ N
driver
) · compound gears share a shaft: input teeth meshes upstream, output teeth drives downstream.
Motor input speed
RPM
Total reduction
—
: 1
Mech. advantage
—
×
Output speed
—
RPM
Stages
—
Wheel / Tread
v = π · D · ω
v = π × D × (ω ÷ 60) · lock two values; the third (highlighted) is solved live. Link
couples ω to gearbox output.
D
Wheel diameter
mm
cm
m
in
ω
Wheel rot. speed
RPM
From gearbox
v
Linear speed
mm/s
cm/s
m/s
km/h
mph
RPS (ω/60)
—
Circumference
—
Time / rev
—
Speed (cm/s)
—
Speed (m/s)
—
Speed (km/h)
—
Locked input
Solved (live-calculated)
Linked to gearbox output