That is one way to approach the biggest problem with automotive alternators when running under larger loads. It's pretty easy to build a 10SI alternator to put out 140 amps but if they are used at that output for more than a couple minutes they will fail. A 40SI alternator may have the same output but they use three sets of rectifier bridges to spread the load to help keep them cool.
If you need a 10SI type alternator with a higher output you should consider the 12SI series. It has the same size case and mounting but uses a more efficient fan and larger cooling vents.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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