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Ford 9N, 2N & 8N Discussion Forum
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inhereted 49 9N

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Phil Diamond

11-04-2005 16:54:45




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I understand that these tractors are reverse polarity. Can someone explain this in laymans terms?
Also I want to hook up an 8 volt battery instead of 6 volt, any comments??




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phil diamond

11-05-2005 06:45:41




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
thanks for all the replies. will sort them all out and get back to you all.



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Coldiron

11-04-2005 19:00:51




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
Phil, You didnt say why you wanted to change the voltage on your N. If she isnt starting on the designed 6 volt system something is wrong and collectively we may be able to help you fix it. I have three 6 volt system units. 2 8N`s and a 1953 John Deere 40C. They all start their engines in minus degree temp if kept in shape. Some of the guys that have the higher voltage change overs have their problems too.

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FarmerDawn

11-04-2005 18:21:00




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
I am new at this myself, but something I learned that really helped me understand the "positive ground" is that the wire from the battery's POSITIVE post goes to a place on the tractor (sort of on the back side of the instrument panel that's in front of your knees when you're driving) and simply attaches to the frame there. It doesn't go anywhere else. That grounds it. The wire running from the battery's NEGATIVE post goes forward to the starter motor. (We really should make sure I have this right before you believe me. I am new at this. So wait and see if the guys have to correct me.)

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old

11-04-2005 17:56:54




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
The + ground had to do what they way they thought back then and how a battery worked. I agree with Bruce 8 volt battery is just a bandade fix that causes more problems then its worth.



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Ken Crisman

11-04-2005 20:24:30




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 Re: inhereted 49 9N in reply to old, 11-04-2005 17:56:54  
I disagree on 8v being a bandaide . About 7 yrs ago I had bought a Ford 640 . Had starting problems on 6v . So I changed everything known that could cause my problem . Then a dealer suggested trying an 8v battery . So , I bought a new 8v batt. , had the new volt reg. tweaked for 8v & bingo . Now 6 yrs later my 8v battery died . I wouldn't say I made a mistake . Be sure to keep all contacts clean & tight . Heavier battery cables too . Try it , you'll enjoy it . Better lighting & faster start ups . Ken

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old

11-05-2005 07:57:12




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 Re: inhereted 49 9N in reply to Ken Crisman, 11-04-2005 20:24:30  
Theres a number of reason I don't use or even tell people to use 8 volt batterys.
1- Have you ever tried to find a charger that puts out 8 volts?? All but impossiable to find.
2- If every thing is as it should be 6 volts works well.
3- You can make a genny put our 12 volts so why go with 8 volts
4- * volt battery cost at least half again as much as a 6 or 12 volt battery and in my area all but impossiable to find.

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Dean

11-05-2005 01:12:27




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 Re: inhereted 49 9N in reply to Ken Crisman, 11-04-2005 20:24:30  
Although the original 6 volt system is entirely adequate if kept in good order, an 8 volt battery will provide additional starting RPMs in most situations.

Contary to popular belief, most 6 volt generators will adequately charge an 8 volt battery if the voltage regulator is properly adjusted. The problem is that adjusting an electromechanical voltage regulator is nearly a lost art. There are very few around who know how to do it and most replacement voltage regulators have riveted covers.

Dean

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Leroy

11-05-2005 17:58:35




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 Re: inhereted 49 9N in reply to Dean, 11-05-2005 01:12:27  
We never had to readjust a regulator either on the N Ford or International truck and a 6 volt charger will addaquatly recharge a 6 volt battery



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Leroy

11-04-2005 17:56:28




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
You do not have a 49 9N, the 9N was made in 39-42 with the 2N following in late 42 thru 47 and they are 3 speed tractors with one brake on the right side with both the clutch and other brake on the left side, the 8N started in 48 thru 52 and was a 4 speed with only the clutch on the left and both brakes on the right. I don't want to get into any arguments over 8 volt but I have been using them for years with no problems and no point burning because of them

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John From Ferndale

11-04-2005 17:38:27




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
Phil,
If you inhereted a 9N, you are truly blessed. Owning one if like owning an early VW Bug. They are a hard worker but they require love and you will have to meet them on their terms. Just like many early vehicles, they are positive ground. Voltage is electromotive force and it polarity and potential is only relative to what you reference to - Ground. I would suggest you buy a a manual, don't worry about putting in an 8 volt battery (or converting to 12 volt), and when you have a question, search the archives and failing that, ask the form. You will discover things like "clean, bright, and tight" - believe it!

It you've got it tuned up and have truly bonded with it, it will start in 3 or 4 puffs.
- John From Ferndale

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Bruce (VA)

11-04-2005 17:02:09




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
It came from the factory as positive ground. In laymans terms, positve ground on a 6v system results in a hotter spark. Also in laymans terms, an 8v battery in a 6v tractor is silly. How do you propose to charge a 8v battery with a 6v generator & v/r? And, you have a frontmount distibutor on that tractor & the additional battery voltage will eat the points up in short order. Fix the problem, not the symptom.

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Bruce (VA)

11-04-2005 17:02:24




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 Re: inhereted 49 9N in reply to Phil Diamond, 11-04-2005 16:54:45  
It came from the factory as positive ground. In laymans terms, positve ground on a 6v system results in a hotter spark. Also in laymans terms, an 8v battery in a 6v tractor is silly. How do you propose to charge a 8v battery with a 6v generator & v/r? And, you have a frontmount distibutor on that tractor & the additional battery voltage will eat the points up in short order. Fix the problem, not the symptom.

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old 9

11-05-2005 18:35:43




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 Re: inhereted 49 9N in reply to Bruce (VA), 11-04-2005 17:02:24  
I bought my 9-N March of 1982, been running an eight volt battery all these years , same starter, 2 rebuilt generators, changed points maybe three times. joe



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