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Ford 9N, 2N & 8N Discussion Forum
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8 volt battery in N series Set regulator to charge

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Sam F.

05-23-2004 14:25:30




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I have a 1941 9N. I do not want to convert it to 12 volt. How do I set the regulator or generator to keep the 8 volt fully charged ?? Also, would the same apply to my 1951 8N ??? Thanks Guys




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B. Jones

05-23-2004 18:09:40




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 Re: 8 volt battery in N series Set regulator to ch in reply to Sam F., 05-23-2004 14:25:30  
I have a 1947 2-n (3 brush-1 wire generator) 6-volt. It always turned over so slow you thought it would not start. Dell is RIGHT. I checked out the starter, put on some GOOD cables and it starts just fine on 6-volts. Also, spend a few dollars and get one of those good starter drives that doesn't kick out. Maybe you have one already.



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Joe (IN)

05-23-2004 15:01:23




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 Re: 8 volt battery in N series Set regulator to ch in reply to Sam F., 05-23-2004 14:25:30  
Put a voltmeter across your battery, start the engine and run it at half throttle, and slowly turn up the adjustment screw on the back of the generator until you see about 8.7 - 9 volts on the voltmeter - if it will even go that high. As soon as you are finished, go back in the house and order a half dozen sets of points and the same number of ignition coils 'cuz yer gonna need 'em. Probably wouldn't hurt to get a couple spare sets of headlight bulbs, too. Oh, and remember not to come here with a half dozen questions about why your burning stuff up all the time. You'll already know. As for the 8N, about the only thing you can do is pull the cover off the regulator and carefully decrease the regulator unit spring tension until you get about the same voltage across the battery with the engine running. Don't forget to order spare parts for it, too.

Why not save yourself a truckload of headaches and a bunch of time and money in the long term? Put 6 volt batteries back in them and smile! If the engines are even half good, they'll start.

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Dell (WA)

05-23-2004 14:51:17




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 Re: 8 volt battery in N series Set regulator to ch in reply to Sam F., 05-23-2004 14:25:30  
Sam..... ..look at the back end of yer 1-terminal 9N genny. Theres a "manual charge adjust" called the 3rd brush. It can be adjusted to as high a 17 volts open circuit (no battery load). The 2-terminal roundcan cut-out relay under yer battery tray has NOTHING to do with the output of the genny but just disconnects the battery when the engine stops so the gutts of the genny don't discharge overnite.

CAUTION: TOO HIGH charge volts will melt the gutts of your 1-terminal squarecan ignition coil. Check yer coil volts with yer new 8 volt battery, ennything OVER 3.5 volts and yer gonna have sparkie problems. Guarantee it!!!

The 8N's 3-wire squarecan voltage regulator CANNOT be shadetree mechanic adjusted to adquately charge an 8 volt battery.

I am NOT A FAN OF 8 VOLTS on N-Tractors and just because BillyJoeBob down at the corner whittlin'n'spittn club sez its the thang to do 'cuz he does it on his ol' JD or Farmerall or whatever doesn't automatically mean it works for N-Fords. 8 volts is a worser bandaide for tired engines than a 12 volt conversion.

Remember the 6 volt mantra: "keep'em clean, bright, and tight". And don't be fer usin' enny of them tharr wimpy ferrin made 12 volt battery cables. Gittcha some 'arrychestd 'merrcum made one-naught (1/0) thick as yer thumb battery cables for eazier 6 volt starting..... ....respectfully, Dell, a 12 volt advocate for the right reasons

That said, I haven't found the right reason to convert my eazy starting 6 volt '52 8N and I know how to do it right the 1st time. Infact, I know 7 ways to do it and they all work.

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