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Old May 24th 05, 10:54 PM
Thomas Tornblom
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Steve > writes:

> Sport Pilot wrote:
>
> > Why the obvious apple and orange comparision?

>
>
> To refute the statement that "more speed is more power."
>
> > You need to compare engines of equal size.

>
>
> OK, Lets do it!
>
> Dodge 5.9 Liter v8 gasoline engine: 230 horsepower at ~5000 RPM
>
> Compared to:
>
> Dodge/Cummins 5.9 Liter turbo-diesel engine: 325 horsepower at 2900 RPM
>
>
> More speed is NOT more power any more than more torque at the same
> speed is more power.


uh?

More torque at the same speed *is* more power.

power = torque * speed

Had the gas engine produced the same torque at 5000 rpms as the diesel
do at 2900, then it would have had about 560 hp at 5000.

Thomas
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