Posted by notjustair on January 27, 2017 at 21:00:33 from (184.191.48.136):
I was born farming. I must be fairly good at it - I'm still at it. I tackle most repairs myself unless my back dictates I can't lift it, etc. There is one thing I need explained, because I just don't get them (I'm a little embarrassed to say). Charging cutouts.
I know old tractors had them and in some cases (my old red machines which are now 12 volt) they were integral with the lighting so you got everything charged. That's not really my area of question. All of my big machines are way too new for a cutout. I'm talking about old cars.
So I use the old 35 Chevy 1.5 ton for chores and stuff. It has a cutout on the original generator. When I start it the amp gauge goes over to maybe 10 amps (12 amp generator) - depending on RPM. The truck does about 50/50 driving and idling, so when it is just idling, I pull the throttle enough so that it shows at least some charge at all times this time of year. There's no heater in it, but the lights are on a lot and starting that big engine in zero degree weather isn't easy.
I get that the cut "in" is at a high enough voltage and cut "out" at a low voltage to keep from having a short to ground when the truck is shut down. I think I have that the right way. Anyway, here are my questions:
Should the truck always charge full tilt at a rate determined by rpm or does it sense that the six volt battery is topped off like a regulator? Should the rate vary with all of the lights on? When I turn them all on I see it charge about the same rate (the amp gauge is hooked and working correctly as far as load side, etc). With the old tires I'm running it only does chores around the farms, but with new tires I might run it to the coop on a nice day for grinding base. Should it charge the same rate the whole time? If this were the case I guess I need to be watching the cells in the six volt battery for water needs. How would an Optima-style handle a cutout if this is the way they are to work?
I get it was different technology but how does it really work (other than acting like a switch to disconnect the battery wire once the generator isn't spinning anymore)? It clearly works fine as the old truck always starts and has never needed a charge. I'm just wondering what that amp gauge should be doing when the truck runs for an hour or something.
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