A engine will burn fuel in proportion to the load (horse power) it is operating at. This is called Brake Specfic Fuel Consumption and is given by the Pounds per Hour Fuel Consumed divided by Observed Horse Power. As a rule of thumb, for gasoline engines I use a BSFC of 0.4 and for diesel engines a BSFC of 0.3. There are no doubt better numbers but I have used these for a long time and they are easy for me to remember.
For example; a gasoline engine operating at 15HP could be expected to use approximately 6 pounds of fuel for every hour it operated at that load. A diesel engine operating at 15 HP could be expected to use approximatey 4.5 pounds of fuel for every hour it operated at that load.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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