All Motor / Naturally Aspirated No power adders

Flywheel and Wheel HP Conversion Factors

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Old Aug 8, 2003 | 09:12 AM
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99-DC2's Avatar
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Default Flywheel and Wheel HP Conversion Factors

what do you guys think is the average conversion factor from wheel hp to flywheel hp on dynojet type dynos? the magic number seems to be between 10-15%...
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Old Aug 8, 2003 | 09:32 AM
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Default Re: Flywheel and Wheel HP Conversion Factors (93eg6)

Hypothetical situation:

You've got a car that makes 100 hp at the flywheel, & 75 hp at the wheels. After some modifications, it now makes 200 hp at the flywheel.

Does it make sense that the exact same transmission, axles, bearings, wheels, tires, accessories, & peripherals would now sap twice as much power as they did at the original power level? By assuming drivetrain losses is a fixed percentage, this is exactly what we're predicting.

Something to think about.
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Old Aug 8, 2003 | 01:38 PM
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Default Re: Flywheel and Wheel HP Conversion Factors (Daemione)

Most say multiply by 1.15 or 15% just as a general number. I don't think it really matters personally. If you wanna know yank it and put it on an engine dyno.
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