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Re: higher RPM or higher gear?
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Posted by MarkB on April 30, 2003 at 18:53:51 from (64.79.81.234):
In Reply to: higher RPM or higher gear? posted by Farmer in the Dells (WI) on April 30, 2003 at 06:52:19:
I seem to remember reading many years ago that most diesel tractors deliver best economy when they are operated at a gear and throttle combination where the rpm's drop 5-10 percent from no load to full load. So if you're running under load at 1900 rpm and depress the clutch, the rpm's should come up to about 2000-2100 rpm. For most heavy implements, you'll be running at near WOT in the highest gear that the tractor can pull the implement without lugging excessively. If it's a light implement, you should go with a higher gear and a lower throttle setting to get the best efficiency. In either case, there should be some rpm droop between no load and under load. Just a comment regarding the silly exchange about whether or not a diesel engine has a "throttle": If you don't believe diesels have throttles, look at a Fordson Diesel Major sometime. It has a throttle plate just like a gas engine! (It's part of the governor, but a throttle nonetheless.)
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