When people or manufacturers say this car has x horsepower are they referring to power at the wheels or power at the crank. Is the same between car companies quoted figures, tuners and individuals?
Power - Wheels Or Crank?
Started by
jameslb101
, Jun 08 2010 08:52 AM
3 replies to this topic
#1
jameslb101
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Mini Mad
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Posted 08 June 2010 - 08:52 AM
#2
Robbie
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Super Mini Mad
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Posted 08 June 2010 - 09:10 AM
I'd say they would generally give a figure at the fly or the crank, as this will obviously be bigger, and will look better.
#3
alicetheauto
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One Carb Or Two?
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Posted 08 June 2010 - 09:32 AM
Which, if measured whilst in the car, is an estimate. The power is measured at the wheels then they use a different feature on the dyno to try and measure the resistance in the gearbox and running gear, which they then use to calculate a flywheel figure.
#4
Tommyboy12
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Up Into Fourth
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Posted 08 June 2010 - 09:40 AM
I imagine for a major manufacturer they will just bench the engine on a jig while developing it. I know Ford do.
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