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Farmall & IHC Tractors Discussion Board

Re: Generator charging rate--part 2


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Posted by John T Yo Bob n Jim on May 29, 2008 at 04:57:13 from (66.244.97.31):

In Reply to: Generator charging rate--part 2 posted by Dr. Bert on May 28, 2008 at 18:39:52:

Yo Bob n Jim, where you guys coming up with that "5 ohm" low charge external field resistance value??????????????? Seems to me like 3 ohms is more in line (for a 6 volt system at least) and 5 may be too much. Lets chew on this some, you guys got any known good LHBD switches laying AROUND AND A GOOD OHM METER LOL

ALSO is this a 6 or 12 volt system??? which makes a difference (5 ohms sounds more like it if a 12 volt system)

While there is a difference in genny field current, I see many of the older delcos (maybe those were all 6 volt units??) that draw 2 amps of field current, That means their fields total 3 ohms sooooooooo if you added another 3 in series at the LHBD switch the current is one half for LOW charge SOUNDS REASONABLE RIGHT????? i.e 5 ohms is toooooooo much

NOW if its a 12 volt genny and it still draws 2 amps of field current now then we have 6 ohms of field resistance so the addition of an additional 5 sounds about correct

SOOOOOOOOOOOOO I reckon Ima saying the resistor would be around 2 to 3 ohms if on a 6 volt tractor but 4 to 6 (You guys recommendation) on a 12

THIS A 6 OR 12 VOLT AND IS IT A 2 OR 3 BRUSH GENNY???????????

Sorry if I just missed that info

Yall Please correct my errors, PS you wont get any cherry lol

John T


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