rear wheel hp to engine hp - Honda TRX Forum
 
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post #1 of 6 Old 03-15-2014, 04:38 PM Thread Starter
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rear wheel hp to engine hp

I just had my 426 dyno tuned and it ran at 32.7 HP at the rear wheels. Does anyone know how to convert that to engine HP?
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post #2 of 6 Old 03-15-2014, 10:26 PM
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It is a close guess at best because of the variables of drive-train loss, frictional losses and so forth, but the engine will have about 42 hp at the crank. If you would like to read a nice article about HP, check out this link Horsepower + Motorcycles
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post #3 of 6 Old 03-17-2014, 04:16 PM Thread Starter
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Does anyone know what a 400ex has HP stock at the crank?
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post #4 of 6 Old 03-17-2014, 04:42 PM
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Honda does not publish HP ratings, so unless someone has independently dyno'ed one, no.

Dyno-jet has a chart that indicates a peak appx. 27hp, but they do not indicate if that is crankshaft HP or rear wheel HP.
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post #5 of 6 Old 03-17-2014, 07:42 PM Thread Starter
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I would have to say that is crank because mine is at 32.7 at the wheels with a ton of mods.
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post #6 of 6 Old 04-28-2015, 11:38 PM
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Quote:
Originally Posted by Here 2 help View Post
Honda does not publish HP ratings, so unless someone has independently dyno'ed one, no.

Dyno-jet has a chart that indicates a peak appx. 27hp, but they do not indicate if that is crankshaft HP or rear wheel HP.
Stock is 29hp @crank
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