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 - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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