Quote:
Originally Posted by mort
Hi cyclopathic,
What's the problem? If you take a load (power) increase of 25% and a speed increase of about 20% You get a work increase of 50% which should be the same as the rate of increase of fuel consumption, if the engine efficiency is unchanged.
-mort
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I punched the numbers into recommended calculator 2800lbs, ,28 Cd, .31 engine, .92 transmission efficiency, etc and calculator shows 53 at 65 and 42 at 75. Test snows 53 at 65 and 38 at 75 consumption. Calculated drop is 21% and actual is 28%, 1/3 worse.