Posted by Bob M on July 05, 2018 at 18:31:52 from (172.101.138.32):
In Reply to: Starter/generator posted by riverslim on July 05, 2018 at 17:20:36:
Traditional starter-generators have several inherent problems: 1 - Low cranking power for the size. An MG for a 12 HP Kohler is the same size as a 50's era car generator. Imagine how big one would need to be to crank a 200 HP V8(!) 2 - Very low amp output at speed, and no output at idle. 3 - Abysmal efficiency - mower MG's convert more input shaft energy into heat than into electrical watts. 4 - Intolerant of overspeed. Even a momentary overspeed can "bird nest" the armature windings, trashing the MG. 5 - Expensive (last time I looked a replacement MG for my son's old 12 HP Cub Cadet was over $200). Rebuilds are not cheap either.
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Today's Featured Article - Gettin My Old Tractor Home - by Clayton Sweeney. My name is Clayton Sweeney. I am from Southern Maryland in a small town called Lothian. I am 20 and my father and I are the proud owner of a 1954 Allis Chalmers WD-45. When I was 18, I dated a girl in the next county over. Her family are tobacco farmers. It was a cold Thanksgiving evening, and we were going up to her Grandparents house. As we passed one of their barns, I noticed something orange in the corner of my eye in this old shed. It was pretty dark and I asked what it was
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