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Ford 9N, 2N & 8N Discussion Forum
:

Ford Jubilee 12 volt conversion

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QuickFarms

09-10-2019 12:24:58




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Afternoon everyone

I know this is probably a old question but I wanted to

Get it first hand. I also hope I am under the right forum for the jubilee. So generator is no longer charging and want to convert my tractor to 12v. Biggest questions is who offers the best kit?Some of these sites I ve been on offer 12v conversion but they seem a little cheap to me. Also I see kits that offer ignition coil and some that don t. I think it would be best to get new coil anyways. There is a resistor for the kit as well... is this for the coil? Is 63 amp the best one to go with? I want it to be a single wife install too. Is it also necessary to update started to 12v. After doing some research some say yes and no. best thing to do would get a 12v starts but that s me. Let me know anything you guys can with this. I just want a great kit for the money and for it to be done correctly. Thanks.

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Jim L WA

09-11-2019 10:23:57




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
Hi QuickFarms. I just converted my '54 NAA this Summer. I got the kit from Just8n's. This site offers a kit too, but their kit retained the 6 volt coil and added a resister. If you're not running head lights or flashing lights a 63 amp alternator probably is overkill, but I went with it anyway. I didn't need a longer belt, the adjusting arm was correct. The conversion itself was easy. I had to reverse the connections on my ammeter (mine wasn't a loop). My reason was I spent a good two years fighting the old charging system. Had the generator rebuilt, went through 3 different voltage regulators, the last one worked for maybe 3 hours and quit. What ever you decide, good luck and don't be afraid to come back and ask questions, or even give us an update on how it went.

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Tim PloughNman Daley

09-11-2019 01:11:39




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
Quick-
Jubilee is the NAA Model so this or the other FORD forum will work. Before you go off have cocked about a 12V switch over, I have to agree with Bruce. Why do to think your generator ‘is no longer charging’? Did you motor test it? Your local starter/alternator shop can test it easily too. If current electrical system is the OEM 6V/POS GRN setup, is it wired correctly? Are all components (generator, voltage regulator, coil, distributor, ignition switch, ammeter) tested and either passed or failed? When was the last time you did a tune-up? Some of us want to know also too if it isn’t running now on 6 Volts what makes you think it will on 12 Volts? One of the fallacies about old Fords is when a 6V issue arises the first thing they think must done is to convert to 12V. Using a 12V system is fine; it has their merits, but to just switch because you are having non-starting issues with your 6V system is unwise, not a proper true root cause problem solving method. Many of is also recommend to have the OEM generator rebuilt –they were meant to be over and over –rather than buying a POS Cheena made unit or buying a 12V ‘kit’. It’s your tractor so do whatever you want. If you choose to go to 12V, and you have an OEM generator, I will buy your old genny and VR from you –email is open.

Tim *PloughNman* (MI)

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Pete in Holland MI

09-10-2019 20:41:54




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
Bought the conversion kit for my Jubilee here. You'll also need:

1) new 12 volt battery 2) new 12 volt coil (tell the NAPA guys what you're doing & get the right one. Don't need any resistor with the correct coil)
3) slightly longer fan belt
4) new light bulbs

Did mine 6 years ago. Starts remarkably quick even at -15F in the winter. Overall cost was about $260. Do the whole job right and you'll get a reliable tractor. Try to save $15 here & there and make a lot of work for yourself, and create more opportunities for failure. My experience. No regrets.

Pete

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Hobo,NC

09-10-2019 18:51:14




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
Its probably the easiest 12V conversion to do yer Jub was born for it.. I just about finished one up today a guy started on it was an Atlantic kit with a one wire alternator... It does not get any easier... The 6V nutz will just have to get over it :lol:
I used a real 12V coil I had to add a wire to the switched side of the coil because the Atlantic kit had the switched wire for the coil wrong... I replaced the amp meter with a Voltmeter I only had to add a ground wire for the voltmeter..
Hoods off its a piece of cake.. Its not the way I would have done it but its EZ

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Ultradog MN

09-10-2019 17:48:32




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
To what Royse said I would add this:
It took a long time for me to come around to a 3 wire system. 3 wires = more complicated than one wire right?
I have later tractors that used an idiot light for the oil pressure and charging.
That big red eye will get your attention a lot quicker than a gage will.
There is a website that has about the simplest diagram for a 3 wire system that I have found.
It is for converting a Land Rover but the diagram is very simple to follow and it has some interesting stuff about 10SI and 12SI alternators. Click the link below.
Two other things: I prefer a volt meter over an amp meter. I think volts tells you more. And as Bruce suggests skip the resistor block and use the 'real' 12 volt coil.

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Royse

09-10-2019 15:57:17




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
I roll my own for the NAA also. The brackets are easy to make.

Base Bracket
Adjusting Arm

Don't forget to get a 5/8 pulley for the alternator though.

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Bruce (VA)

09-10-2019 13:03:34




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 Re: Ford Jubilee 12 volt conversion in reply to QuickFarms, 09-10-2019 12:24:58  
If it was my tractor, I'd find out why it wasn't charging before I spent money to fix it.


Generator brushes are a lot cheaper than a 12v conversion!

But it's not my tractor.

Do not buy any kit that sells you a coil AND a resistor.

In fact.....

I wouldn't buy a kit.

Get a NAPA IC4SB coil, a good 12v battery, a Delco 10si single wire alternator and new headlight bulbs. And a bracket. Don't worry about the starter.

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