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Re: New HP v. Old HP
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Posted by JHEnt on December 01, 1999 at 18:15:39 from (216.138.56.195):
In Reply to: New HP v. Old HP posted by Ryan on November 28, 1999 at 07:02:35:
Most of the smaller compact diesel tractors today are rated at estimated HP. This is a mathamatical calculation based on the amount of heat energy released by the amount of fuel at a certain rpm and the conversion efficiantcy of the heat energy into rotary force. Basically the newer deisel engines produce more HP in a smaller engine than your older tractor produces but the ratings are over what the measured PTO HP really is. Tractor size really does't compare very well, for example a 1950's ford 800 was 42 PTO HP and it really isn't any larger in overall tractor size than you Farmall H.
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