Posted by jdemaris on March 16, 2014 at 15:45:50 from (70.194.6.88):
In Reply to: Horsepower again posted by gtractorfan on March 16, 2014 at 12:12:08:
Just as Dean stated - few cars or trucks have engines rated for steady use. The only ones I can think of are a few heavy 3/4 ton trucks. Engines for heavy use (on the road) get "B" ratings. These ratings predict how many miles they last, on average, when used hard most of the time. Chevy Duramax has a B10 rating of 220,000 miles. That means that when used hard - 10% by 220K miles and 90% make it. You won't find any such rating for a car engine that is not made to endure steady hard work. Tractor engines got weeded out by the Nebraska Test Institute. Some HD engines came with two ratings: One for max power and one for continuous max power. One example is a four cylinder VP4 Wisconsin engine. It is rated for only 24.2 horsepower continuous, and 31 horsepower max momentary.
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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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