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2N generator rate???

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erik

08-29-1999 15:28:59

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What is the best charging rate for a 2N? I dont want to overcharge the battery. Mine charges about 10-15 amps.
Thanks

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llamas

08-30-1999 03:22:19

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Re: 2N generator rate??? in reply to erik, 08-29-1999 15:28:59

The maximum output of the third-brush generator is specified at 11.5 amps. It's a quandary, because the maximum output is not enough to run the ignition two headlamps and a taillamp (about 90-100 watts, total) for an extended period, yet the minimum output (about 5 amps) will overcharge the battery over an extended period if the lights are not used.

The ignition system draws 2-3 amps when running steady. I would check the draw of your ignition system with a decent ammeter and the generator disconnected, then set the generator output about 1 amp higher than that. Mark that location on the output adjuster. If you plan to run with lights on for an hour or more, then set the adjuster to "maximum". Return it to your set location when running without lights.

The ammeter in the dash is not very reliable as to exact measurement and I'd be inclined to see it more as a charge/discharge indicator than an absolute measure.

Hope this helps.

llater,

llamas

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Claus

08-29-1999 16:18:40

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Re: 2N generator rate??? in reply to erik, 08-29-1999 15:28:59

Even at the lowest setting of the third brush, you will overcharge the battery when you run the tractor for extended periods. A lot of people use lights to eat up the extra current. Another alternative is to replace the 3 brush generator with a 2 brush generator and employ a voltage regulator. 10 amperes is not a bad charging current provided the battery voltage does not get much above 7.75 volts. There is an outfit that claims to have a voltage regulator built into a cutout relay container for no loss of show points although I do not know how it works since regulation on AC as well as DC generators works with manipulating the field current. This is obviously not the way theirs works. Happy Motoring
Claus

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Phil (NJ)

08-29-1999 18:58:07

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Re: Re: 2N generator rate??? in reply to Claus, 08-29-1999 16:18:40

Claus, Very good answer, what is the absolute Ref!! Hmm?? everything has its limitations but stuff that has existed for >50 years must have some laws of Physics in its legitimate background, maybe the modern storage battery is a problem ? Phil

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Claus

08-30-1999 03:36:19

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Re: Re: Re: 2N generator rate??? in reply to Phil (NJ), 08-29-1999 18:58:07

Yes, you are correct. Some people brag about getting 8 years out of a storage battery. Although I think that this is urban ledgend. I have never seen one last that long.
Happy Motoring

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Jim WI

08-30-1999 10:39:09

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Re: Re: Re: Re: 2N generator rate??? in reply to Claus, 08-30-1999 03:36:19

I've seen a number of batteries last that long in automotive use in Wisconsin.

Course, the last one I saw do that was a while ago -- before cars gained engine computers that use battery backup. Maybe that makes a difference?

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llamas

08-30-1999 06:03:17

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Re: Re: Re: Re: 2N generator rate??? in reply to Claus, 08-30-1999 03:36:19

I have a 17-horse Simplicity tractor with a 1992-vintage 12-volt battery in it. Date-of-sale code still clearly visible. It still starts and runs the tractor just fine, even in the depths of MI winter. Pressure-wash twice a year, check the water every three or four weeks. It's probably much more battery than the starter motor of this tractor needs, which may explain the extended life.

llater,

llamas

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