Flywheel Effect Calculator

Calculate flywheel moment of inertia and its effect on engine response, RPM fluctuation, and launch performance.

Input Parameters

Results

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Moment of Inertia
kg-m²
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Stored Energy
kJ
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Angular Accel
rad/s²
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RPM Fluctuation
%
Note: Lighter flywheels improve throttle response but increase idle RPM fluctuation. Dual-mass flywheels isolate drivetrain vibration. SAE J1723 flywheel testing standard.

Reference

I = 0.5 × m × (R_outer² + R_inner²) [hollow disk] E = 0.5 × I × omega² omega = RPM × 2pi / 60 alpha = Torque / I RPM Fluctuation ∝ Pulse Torque / (I × omega)