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Farmall & IHC Tractors Discussion Forum

12 to 6 volt reducer

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jeeper

06-17-2007 13:38:10

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where does the reducer go at in the electrial system on the old 100 so it will not burn anything up when i put the 12 volt battery in it ? I tried jumping the batt. to gen. to try to repolirize the gen but did not work so 12volt is to be thank you all for any help. jeeper

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Buzzman72

06-17-2007 16:31:41

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Re: 12 to 6 volt reducer in reply to jeeper, 06-17-2007 13:38:10

If you're converting a 6-volt tractor to 12V, you need to switch to a 12V generator and a 12V regulator. The 6V starter, with its heaver windings, should be OK as long as you don't crank it to death on 12V. You need a ballast resistor in the lead to the coil, unless you convert to a coil with a built-in resistor. If you're going to a negative ground system on 12V, you also need to reverse the leads on the back of the ammeter...and change all the light bulbs to 12V.

Not sure where you'd put a 12V to 6V reducer, because if you do it the way I detailed it, there shouldn't be any need for any further voltage reduction.

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Hugh MacKay

06-17-2007 16:48:51

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Re: 12 to 6 volt reducer in reply to Buzzman72, 06-17-2007 16:31:41

Buzzman: I looked at this earlier, and wondered if the reducer he was talking about might be the ballast resistor. That technically being the only reduction needed, he's just using different terminology than most. I suggest he'll have to confirm if that is his thoughts.

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Buzzman72

06-17-2007 17:36:54

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Re: 12 to 6 volt reducer in reply to Hugh MacKay, 06-17-2007 16:48:51

I also wondered if he might be referring to a ballast resistor. But if my experience talking about trucks over on the oldihc.org boards is any indication, there actually ARE some folks out there that think there's some sort of magical "voltage reducer" that, once installed, makes everything hunky-dory as well as making your clothes smell April-fresh.

The odds may be against it here on the tractor boards, but I was willing to take a chance that maybe this guy isn't too experienced with 6-to-12V conversions. If I'm mistaken, I meant no offense to anyone.

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jeeper

06-18-2007 13:57:35

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Re: 12 to 6 volt reducer in reply to Buzzman72, 06-17-2007 17:36:54

I really want to change this to 12v. system because i need a new battery and the reg. and gen may be bad because it will not charge. I just thought it would be just as cheap to change it. I bought a kit for my 9n ford and never had any more trouble with it.
thank you jeeper

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Bob M

06-17-2007 19:18:26

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Re: 12 to 6 volt reducer in reply to Buzzman72, 06-17-2007 17:36:54

Some catalog outfits (JC Whitney etc) offer 12 to 6 volt "voltage reducers". However to work the reducer resistance must be matched very closely to the load current required. Otherwise the voltage provided by the reducer will either be too low or too high.

Some reducers have multiple terminals to accomodate several different load currents (eg. 2.0, 2.5, 3.0, 3.5...amperes) The proper current tap is must then be selected when wiring it up.

For the typical tractor 6 to 12 volt conversion, installing an ignition ballast resister in series with the coil, and swapping all the 6 volt lamps for 12 volt is the simplest/least expensive solution.

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