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EBL
Dodge Dakota
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9/28/2003
16:58:29
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 Subject: Transmission Parasitic Power Loss
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Message:
In this month's Car Craft, they have a story on different power draws. They run a motor on a dyno and then drop it in a vehicle and run it on a chasis dyno.
The motor lost 33% of it's power from flywheel to wheels! The transmission being used for the test was a Ford AOD. Does anybody know what our transmissions take away from us?
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Desmond
Dodge Dakota
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9/28/2003
17:08:35
| RE: Transmission Parasitic Power Loss
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33% is a meaningless number because we don't know how much power the engine made and how much was measured at the rear wheels.
You also loose power through the differential and wheel bearings. Actually, the differential is the biggest power robber because you're bending the power 90 degrees.
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Kowalski
Dodge Dakota
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9/28/2003
18:40:33
| RE: Transmission Parasitic Power Loss
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I've heard its about 20 - 25 % drivetrain loss depending on which auto tranny you have, a little less for a standard.
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