Flywheel Inertia Calculator

Inputs

Flywheel shape

Flywheel mass (m)

Flywheel or rotating part mass.

Outer radius (r_o)

Outer radius of the rotating disk.

Engine speed (n)

Flywheel rotational speed.

rpm

Overall ratio (G)

Gear ratio from flywheel to tire in the selected gear.

Tire rolling radius (r_t)

Rolling radius at the driven tire.

Default result

Moment of inertia(I)

0.0784kg*m^2

Pass

Also computed

Stored energy(E)18.16kJ

Rim speed343.1km/h

Equivalent vehicle mass103.7kg

Method notes 2 notes

The geometry model treats the flywheel as a uniform solid or annular disk. Real flywheels concentrate mass unevenly.
Equivalent vehicle mass is reflected through the selected overall ratio and tire radius, so it changes by gear.