6 Volt system Generator output

[Sky]

Hello,...i need help again...could anyone assist me in this..perhaps?

http://antiquetractorforum.com/viewtopic.php?t=2274

[grub54891]

you should be able to just put your meter on the pos, and neg battery posts and get a reading.try it with motor off, then start and see if it goe's up, mabe rev it up a bit and see how much it increases.it's been awhile since i checked a 6 volt but i think it should go to 7-1/2 volts or so.hope this helps.

[Elden DuRand]

Originally Posted by grub54891

you should be able to just put your meter on the pos, and neg battery posts and get a reading.try it with motor off, then start and see if it goe's up, mabe rev it up a bit and see how much it increases.it's been awhile since i checked a 6 volt but i think it should go to 7-1/2 volts or so.hope this helps.

Grub:

7.5 Volts is a bit high. A good target to aim for is 2.3 Volts per cell or 6.9 Volts for a 6 Volt battery.

Any higher and the battery will lose water quickly and may not last long.

Take care - Elden

[Jester]

Considering Sky's wording, I believe you answered half his question, fellas. Since you suspect the ammeter is bad, Sky, I am assuming you are wanting to also check gen. amperage output. Grub and Elden have both offered good help for checking voltage output--while that will help you determine that your charging system is strong enough to maintain battery voltage, be aware that amp output is equally important. Without knowing the specific limits of your gen./reg. configuration, I can tell you that most 6 volt charging systems that I am familiar with are designed to deliver between 25 and 45 amps. It also wouldn't hurt to check all connections, especially grounds, on the gen./reg. curcuit. My experience with 6 volt electricals has been that all kinds of wierd things can happen when something has a loose or dirty ground. If you haven't checked it yet, that might be the only thing wrong with the ammeter. Best Wishes

[Bill Geyer]

OK Sky, I think the box on the generator is a cut out. It only has two connections right. All it does is sense the voltage. If the generator is producing more than about six volts it should pick up and connect the generator to the battery. When the engine is turned off and the generator is no longer making electricity, the relay will open. This removes the generator from the circuit so it won't run down the battery. I don't think your car has a voltage regulator or a current regulator. I think the generator has a third brush that is set for about 12 amps high or with lights on, and about 4 amps on low with lights off. I have never worked on a car like that but have worked on tractors with that system. This system will not charge at idle, you will have to speed it up a little 1000 - 1200 RPM. You can put a jumper (alligator clips) across the terminals of the cut out this will put the generator in the circuit, and it should charge and give an indication on the amp meter. Also with your meter on the battery the voltage should rise. But that may take some time.

[Sky]

ok, yea, your right Bill. it makes sence becouse this is my findings.
now with the engine not started and a test with the multimeter directly from the battery, the battery reads 6.19 so i guess the battery is fully charged?
and the cutout reads 6.20 now with the engine running at idle, the cutout reads 5.79 to 5.80 it flickers back and forth from 5.79 to 5.80 so i guess it's doing it's job. now a direct test from the battery with the engine running, the battery reads 6.14 now that would be a drop 5 point becouse of the coil now pulling on the battery to run the engine. and when you give the engine some gas, i held the accelerator to like a "street speed" if you were driving the car, and readings from the battery jump from 6.29 and slowly and steadily climb to 6.48 it may have made it to 6.50 if i would have gave it more gas but i didnt want to do that. so from my findings, the charging circut must be working quite well. so what do you think?

[grub54891]

Originally Posted by grub54891

you should be able to just put your meter on the pos, and neg battery posts and get a reading.try it with motor off, then start and see if it goe's up, mabe rev it up a bit and see how much it increases.it's been awhile since i checked a 6 volt but i think it should go to 7-1/2 volts or so.hope this helps.

yeah i was thinking on the lines of a 12 volt systym.like i said it's been awhile....

[Bill Geyer]

Yes Sky, that all sounds correct, I think it's working fine. Sounds like your new tester just earned it's keep

[Sky]

ok. Thanks guys! you been a big help