The 10si is a good alternator, made in a time where there wasn't a need for a lot of electrical demand. A perfect alternator for a simple tractor. Keep in mind the amperage rating is measured at peak rpm or around 8000 or more RPM. A typical alternator pulley ratio is 2:1 so if the engine is turning 4000 rpm, the alternator would turn 8000 rpm, tractor engines are going to turn fast enough to produce peak ratings. A 10si alternator is only going to produce around 20-25 amps around idle speed, a larger 12si is around double that, modern alternators even more.
Modern alternators (, CS144 CS130,cs130d, ) have more output, not only peak but at lower rpm, double or triple what a 10si can produce. Even a old 12si would be a big improvement. I don't know the size of your winch, but a typical recovery winch can easily draw over 200 amps when pulling a heavy load.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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