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Old 08-31-2012, 12:50 PM   #10 (permalink)
arcosine
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Join Date: Nov 2010
Location: Chicago area
Posts: 1,156

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)

RV - '88 Winnebago LeSharo
90 day: 16.67 mpg (US)
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Quote:
Originally Posted by stillsearching View Post
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.

...You missed the point (no pun intended) if the 220 lb radial engine were a flywheel...
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