Quote:
Originally Posted by arcosine
I wonder how much energy could be sorted in a flywheel of 220 lbs, the weight of my engine., E= 1/2 J omega squared.
V = sqr(548*2/1045)= 32 m/s =52 mph (if I did the math correctly)
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I can't speak about the math, but I can say that all other experiments with flywheel based storage border on safety hazards... special substances are needed that get spun up to _25,000rpm_ to store enough energy for even short bursts of energy. RPM beats weight, even if you use weight you have to have something that will take the rpm. A 220lb flywheel would fly apart at any substantial RPM. That much mass accelerating and decelerating would probably be felt jerking the car around... and I wouldn't want a crash with a 220lb flywheel spinning thousands of RPM coming through the back seat if I could help it.
