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W4 electrical

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Joe W. P.

09-27-2004 09:49:35

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I have a 6V system w/ a voltage regulator mounted on the generator (not using the light switch L-H as the regulator). Can anyone tell me what the ammeter should be reading when the tractor is running? The needle moves only slightly towards "charging". Is this normal? Or should it all the way over, 1/2 or a 1/4? Starting seems to be ok so the battery is getting charged i guess. Thanks for any input.

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Bob

09-27-2004 10:24:38

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Use an analog voltmeter to verify that the regulator is maintaining the voltage at about 7.4 Volts, for proper charging of the battery.

The amps will start high, and fall as the battery charges, but after a couple of minutes after starting (with the engine revved a bit off of idle), the voltage should rise to about 7.4 Volts and stay there. Being able to get the charging voltage up to that level, and not rise much above is a more accurate measurement of charging system performance than an ammeter.

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Joe W. P.

09-27-2004 13:18:00

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Re: W4 electrical in reply to Bob, 09-27-2004 10:24:38

Thanks Bob !!

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Allan in NE

09-27-2004 10:21:29

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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Joe W. P.

09-27-2004 13:19:07

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Re: W4 electrical in reply to Allan in NE, 09-27-2004 10:21:29

Thanks for your help Allan !!

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Bob M

09-27-2004 10:19:26

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Joe - Normally the ammeter will show 12 - 15 amps (1/2 to 3/4 scale) charge with the motor at full speed immediately after startup. Then as the battery nears full charge charge rate should drop to 3 - 4 amps or so (slight deflection to the right).

If the battery is nearly fully charged the charge rate drop off should happen after just a few minutes after startup. However if the battery is down it could require several hours of running before the charge tapers off.

Your low charge rate could be caused by an improperly adjusted 3rd brush in the generator. However if the battery seems to be starting the tractor OK it means it's already receiving an adequate charge at the reduced rate. You will probably be Ok just leaving it as it is.

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Joe W. P.

09-27-2004 13:22:26

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Re: W4 electrical in reply to Bob M, 09-27-2004 10:19:26

Thanks for the helpfull info Bob M !!

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Allan in NE

09-27-2004 10:18:29

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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Allan in NE

09-27-2004 10:18:26

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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Bob M

09-27-2004 10:17:32

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

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Allan in NE

09-27-2004 10:17:10

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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Allan in NE

09-27-2004 10:15:26

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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Allan in NE

09-27-2004 10:14:10

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Re: W4 electrical in reply to Joe W. P., 09-27-2004 09:49:35

Hi Joe,

The more she is charging the higher it will read (usually right after you start it), then, as the battery fills, the needle should fall back and rest just to the right of the center "0".

Hope this helps,

Allan

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scotty

09-27-2004 10:38:00

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Re: W4 electrical in reply to Allan in NE, 09-27-2004 10:14:10

Hey Allan, Thats quite a thread youve got there!!!
Just kidding of course. Just wanted to say high!

scotty

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Allan in NE

09-27-2004 10:45:59

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Re: W4 electrical in reply to scotty, 09-27-2004 10:38:00

I know,

What's going on anyway? Is it the gremlins? :>)

Allan

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