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09-21-2001, 04:28 PM
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#8 |
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Registered Member
Join Date: Sep 1998
Location: IL
Posts: 1,155
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The majority of the horsepower gained with underdrive pullies is due to not turning the mechanical fan at 6000 rpm. The power required to turn a fan goes up by the cube of the speed increase (Affinity Law). Even though there is a fan clutch reducing the fan speed, the clutch itself is consuming power (slipping = heat = power loss).
------------------ Craig Supercharged 93 GT Basically stock 93 Cobra "I drive way too fast to worry about cholesterol!" |
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