Commercial energy flywheel system: 600 lb flywheel = 272kg 2.5 feet radius = 76.2cm, 0.762m 7,700 rpm = 128.3 rps (128.3 rps)(4.78m)=614m/s L=mvr =(272)(614m/s)(0.762m) =127,260 kg((m)(m))/sec power output ~ 1MW democratize our power #democratizeourpower #msales23114llc