24Volt winch in a 12Volt Truck

Discussion in 'HardCore Corner' started by 4Hummer, Nov 15, 2005.

  1. 4Hummer

    4Hummer

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    Friend of mine just scored himslef a free 10000 lbs Ramsey. Dude he got it from said it he couldn't get it to work. After testing the winch (Solonoids, motor etc) we found out that this Winch is a 24Volt unit. We hooked it up to the Skid Loader in the back and sure enough it worked like a champ. (What a bumbass... But perfect for my buddy)

    Now my question is on how to get this bugger to work in his truck.
    The winch is going to be reciever mounted, so we are going to wire quick connects front and rear, we will be installing 2 batteries in a custom tray in the rear of the bed.

    What I need help with is A: How to wire the Batteries for 24Volt (ie: Parallel? series? etc) and what sort of switching device (Isolater etc) to put in between the primary battery and the 2 batts in the rear, to charge em?


    Heres a cheese ass pic I put together.

    [​IMG]
     
  2. FJ40_owner

    FJ40_owner

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    You need to wire the batteries in series.

    You need to figure a way to charge the batteries. The winch will rapidly discharge the batteries.

    You need to figure a way to prevent anyone from connecting a 12 volt device to the circuit.

    In my opinion the setup is not worth the effort.

    My .02

    Good luck

    JB
     
  3. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    The first thought that comes to mind is to use relays to change the hook up.
    USe series for winching and parrallel for charging. Use a standard RV isolation set up for the charging circuit. I'll try to post a schmatic later.
     
  4. 4Hummer

    4Hummer

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    The two batteries will be inside a custom box in the rear of the bed. and will not be on any other circuit other than the quick connects for the winch.

    Problem will be charging these two batteries that will be wired in series.
     
  5. lowenbrau

    lowenbrau

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    Do a search for series/parellel switches. That's what you need.
     
  6. honk

    honk

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    No swapping for a 12 volt motor I guess?

    If it were an 8274 I'd maybe trade a 12 volt motor for the 24 volt motor, but Ramsey motor probly a no go.
     
  7. 4Hummer

    4Hummer

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    I searched "No matches found"
     
  8. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    I had a schmatic drawn up but it was illegable by the time I resized it, I can e-mail it to you if you like.
    I thought of a better way to solve the problem anyway. Just have the motor re-wound for 12V by an electric motor shop.
     
  9. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    This is how it could be done. Disclaimer, if you choose to use a schematic posted to a forum by persons unknown to you without doing the proper research on your own you get to fix any problems that come from using it. :doh:
    12_24.jpg
     
  10. import silvia

    import silvia

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    I would put a fuse on the pos terminal of the switched battery. And look to find a high current switch that can make all of the throws at the same time (I'm thinking big rotary switch).
     
  11. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    One low voltage switch and two DPDT relays rated for the correct amprage. No fuse, a thermal re-settable breaker. I didn't include those details, or a bunch of others, like the correct wire guages, hence the disclaimer.;)
     
  12. fng55

    fng55

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    on my old ramsey 7905 you can change from 24v to 12v by changeing the soleniods, same motor for both voltages. can the new ones do the same thing?
    carl
     
  13. HI^C

    HI^C

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    $$$$ for these items i imagine will put this way out of reach, your talking min 200 amp rating on most of this stuff, IMO.

    make the call to ramsey to figure it out (motor or relays, etc...) , or post it on military boards and hummer boards unload it and buy a 12v winch.
     
  14. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    Ramsey specs 160A for their 12000/24V unit with a 10000 load so 200A would be correct. (The same unit in 12V requires 335A with the same load.) Also consider the expense of two batteries.

    I agree with HI^C Ebay the 24V unit and buy a 12V unit with the money.
     
  15. 4Hummer

    4Hummer

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    So his options so far seem to be:

    1: Replace the 24V motor with a 12V motor and be done with it.
    (best option)

    2: Sell Winch

    3: Intall 2 batteries in the back in series and run them off a seperate 24V alternator

    4: Install 2 Batteries and do some crazy ass wiring and hopefully not start an electrical fire.


    What about running a 12V to 24V inverter to charge the batteries ? or will the draw be to much while running the winch ?
     
  16. HI^C

    HI^C

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    pretty much,

    think it will be a $$$$ versus time and hassel

    CONTACT ramsey first,
    if your going to have more $$$ then it would be to have the 12v winch, why even play with the 24v
     
  17. cruiserrg

    cruiserrg

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    You could do some research on Military CUCV. My M1008 had a 24 system for only starting, the rest of the system was 12 volts. 2 batteries and 2 alternators. I converted mine to all 12 volt so I am kinda familar with the system. Basically the alternators had isolated gnds and were wired in a way to charge the system 24 volts. CUCV alternators shouldn't be too hard to find, and wiringing isn't too bad.
     
  18. haffi

    haffi

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    12v or 24v

    Some Unimogs have 24v starter, 2 batteries, one 12v alternator and some switch-unit to change the battery connections from paralell to series while starting. Some 80 series tlc have the same mechanism but i guess the switch is smaller and will not handle the high amps as well.

    You might consult some unimog fans and see if they know this system, i am not sure if this switch-thing will handle the winch for a long time. Ask some Mercedes geeks ;)
     
  19. CruisinGA

    CruisinGA

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    pretty easy to do.

    use a battery isolator to charge two 12v batteries at once.

    Have them connected in series to give 24v only to the winch.

    There you go.
     
  20. rusty_tlc

    rusty_tlc Dain Bramaged Member

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    So how exactly would you hook that up?
     
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