Thats cause the EPA will drive a vehicle for the test how they think the average owner will drive it based on model and how much they don't like it. They have been caught at that more than once. Try to figure why they get 50-60 MPG on a hybred and most owners actually get 45.
By the same token the Nebraska test are just that, a test. Going up and down hill, different soil conditions, larger or smaller implements, more or less traction and even the weather can figure in there. The Nebraska test are done in a controlled enviorment to minumize any one tractor having an advantage. They also make sure that if the book says WOT 2100 RPM thats what it's doing, not 2095 or 2150.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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