Re: How long will a Farmall A idle for on a full tank of gas

Posted by mkirsch on November 12, 2012 at 05:36:27 from (64.80.110.74):

In Reply to: How long will a Farmall A idle for on a full tank of gas? posted by PretendFarmer on November 12, 2012 at 05:11:14:

I would imagine an A could idle for literally days on a tank of gas.

An alternator needs RPMs to charge effectively, though. Cars normally idle at around 1000RPM, while an A is more like 450RPM. Full throttle for an A is barely off idle for a car.

I would recommend a bigger alternator, like a 105 Amp, and a way to spin it faster with the tractor at idle. Since the pulley on the alternator itself is about as small as it can get, all you can do is go bigger on the crankshaft, or introduce another multiplying pulley in between. What I mean is two pulleys connected together on a common shaft. Crankshaft drives the small pulley, big pulley drives the alternator.

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