Results 1 to 6 of 6
  1. #1
    New Member
    Join Date
    Sep 2011
    Posts
    1
    Tractor
    1953 50

    Default 12 volt

    Hi ya'll im new to this forum so bear with me. i have a 53 JD 50 that has the original 6 volt system. i would like to convert it to 12volt. Now ive read that a gm delco SI-10 alternator will work? i have some newer delco-remys laying around would they work? it has the battery operated ignition and has no outter-coil. I read i need a 12volt coil or a ballast resistor? where do i get one of those and whats the installation process? Im new to these poppers but i know how to wrench. any help is appreciated

  2. #2
    Elite Member
    Join Date
    Oct 2004
    Posts
    2,951
    Location
    limerick pa lycoming county pa
    Tractor
    kubota bx23
    If it ain't broke we will help you brake it
    If it is broke we will help you get it fixed!


    https://www.facebook.com/joseph.t.mussington

  3. #3
    Super Star Member
    Join Date
    Feb 2008
    Posts
    11,177
    Location
    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, x758, L130

    Default Re: 12 volt

    Quote Originally Posted by JohnDeere5350 View Post
    Hi ya'll im new to this forum so bear with me. i have a 53 JD 50 that has the original 6 volt system. i would like to convert it to 12volt. Now ive read that a gm delco SI-10 alternator will work? i have some newer delco-remys laying around would they work? it has the battery operated ignition and has no outter-coil. I read i need a 12volt coil or a ballast resistor? where do i get one of those and whats the installation process? Im new to these poppers but i know how to wrench. any help is appreciated
    You can certainly convert it to 12 volts but I will mention that another alternative that I used on my old Case SC tractor was to leave it 6 volts and install an 8 volt battery. This added just enough zip to the starter to make it work well. The 6v generator will charge up an 8v battery sufficiently.

    A few years after putting in the 8 volt battery I did convert the tractor to 12 volt but I didn't really see much improvement for the time and money spent. The 8 volt battery with the 6 volt system worked just as well.

    If you change to 12 volt system the resistor is in series with the ignition lead to the 6v coil and acts to lower the voltage feeding the coil. Typically you add a wire from the coil side of the resistor to the starter terminal of the ignition switch too, this allows the full voltage available to the coil while cranking the engine. Reasoning that the cranking voltage will be much lower while the starter is loading down the battery. When the starter switch is released the coil is then fed through the resistor to keep from damaging the coil. I should clarify that the points are also in the loop too as you have presently, so that the resistor is ahead of them.

  4. #4
    Member
    Join Date
    Jan 2011
    Posts
    29
    Tractor
    John Deere 40S

    Default Re: 12 volt

    Before you go to too much trouble, a JD 50 originally came with 12 volt system. There were two 6 volts put in series to equal 12 volts. I would check your generator numbers and see if it is the correct one.

  5. #5
    Old Timer Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    51,669
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 12 volt

    and I would never go 8v. I'd do 6 or 12.. but not 8.

    to the op.. if it's a 6v system and a maggie, you can slap a 12v alt on it, change lamps and go, as there is no 'coil'. if it is a battery ignition, and you are 12v, use a napa IC14SB coil and no resistor.

    also.. if battery ignition, use a 3 wire setup so it will start charging at low rpm. if maggie ignition, wire up an exciter switch to the alt so you can use it as 3 wire. low rpm engines have a hard time exciting 1 wire gm delco alt.

    soundguy

  6. #6
    Platinum Member Hoosier Hay Man's Avatar
    Join Date
    Nov 2008
    Posts
    553
    Location
    Indiana
    Tractor
    Kioti DK45S Cab, Quicktach FEL

    Default Re: 12 volt

    Quote Originally Posted by JohnDeere5350 View Post
    Hi ya'll im new to this forum so bear with me. i have a 53 JD 50 that has the original 6 volt system. i would like to convert it to 12volt. Now ive read that a gm delco SI-10 alternator will work? i have some newer delco-remys laying around would they work? it has the battery operated ignition and has no outter-coil. I read i need a 12volt coil or a ballast resistor? where do i get one of those and whats the installation process? Im new to these poppers but i know how to wrench. any help is appreciated
    All John Deere 50's were 12 volt. They would have 2 6 volt batteries under your seat. It's predessor, the Model B was 6 volt.
    Thanks,

    HHM

    Tractors include 2009 Kioti DK45S Cab, 1974 JD4430, 1952 Oliver 77, 1953 JD50, 1940 JD A, 1938 Farmall F-14,

    NH 489 Haybine, NH 315 Baler, Gehl 1465 Round Baler, NH 68 Baler, Kuhn GA301 GM Rake, Kuhn GA25 Rake/Tedder, JD 851 Rake, GT-77 ATV Herd Seeder,
    Everlast PowerArc 200

Similar Threads

  1. Tires Converting tires on Yanmar 1500D
    By benhood in forum Yanmar
    Replies: 33
    Last Post: 11-12-2015, 08:17 PM
  2. 8N - 12 Volt
    By Alan Davis in forum New Holland Owning/Operating
    Replies: 11
    Last Post: 07-11-2011, 11:45 PM
  3. 12 Volt/24 Volt Battery Booster Box
    By penokee in forum Parts/Repairs
    Replies: 8
    Last Post: 06-30-2011, 12:31 PM
  4. Is There a 12 Volt Chainsaw ?
    By MrJimi in forum Chainsaws
    Replies: 21
    Last Post: 05-30-2008, 03:06 AM
  5. 8 volt or 6 volt Battery for a Fergie TO-20?
    By penokee in forum General Vintage Tractors
    Replies: 3
    Last Post: 05-11-2005, 10:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2016 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.