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transmission loses

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Old 07 September 2007, 02:01 PM
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moffett
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Default transmission loses

Any body know what percent an sti impreza losses through the transmission. My car made 320bhp at the flywheel, but i would like to know roughly what wheel horsepower i have.
Old 07 September 2007, 02:07 PM
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Luminous
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<can of worms mode on>

errr, well....ermm.....whatever I say is going to be contested by someone....25%

<runs>
Old 07 September 2007, 02:19 PM
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B0DSKI
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More like 16% in the real world
Old 07 September 2007, 02:23 PM
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GazTheHat
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Can i guess too.... 23%
Old 07 September 2007, 05:15 PM
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Black-Hawk
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on powerstations rollers my 06 wrx was 329.1bhp engine power and 232.7bhp wheel power.any help?
Old 07 September 2007, 05:21 PM
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hoskib
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lol, are these threads the new 'fuel broquets'? (anyone remember the joy of those?)
Old 07 September 2007, 05:27 PM
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vindaloo
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On the road, figure maybe 20%-25% assuming all's well.

On the rollers, a lot higher, depending on the car and how hard it's lashed down, whether extra air's been put in the tyres.

As a starter, anywhere between 30%-40%.

J.

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Old 07 September 2007, 09:00 PM
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DazW
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Doing the math (vmax, weight, rolling resistance, frontal area & Drag) it worked out to be around 25% on a UK classic
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