My grandpa has a (1975???) 5000 with a M&W turbo. I dynoed the tractor and at 540 PTO speed it only made about 65HP. Pulled it down to 500PTO RPM and there the more you pulled the dyno down the more the HP shot up and the engine didn't pull down. Even after correcting for the lower RPM it was over 90HP. I didn't hold it at that power for long because the pyrometer shot up in a hurry and I let off of it before it started to melt pistons. Grandpa told me when he used the tractor years ago on a grinder/mixer it had a lot of power but you had to watch the pyro really close to keep from melting it down. I robbed a K&N air filter off one of my pulling tractors and put it on the 5000, it didn't change the power hardly any, but it seemed to help keep the EGT down.
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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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