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Farmall & IHC Tractors Discussion Forum
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12 volt vs 6 volts

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Kurt in Va Beac

11-28-2005 12:29:39




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Why would I want to convert my 6 volt 51 cub to 12 volts? What are the gains?

thanks,
Kurt




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kurt in Va Beach

11-29-2005 05:15:11




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
Thanks all, I see no real advanage to changing the system. I would like to restore to stock as much as possible. I may change to the Electrical Ignition Conversion Kit for 6volts. I did this for my MF35 and really liked the results. It seems to have better firing giving me more power. thanks again!



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Peabody

11-28-2005 19:02:09




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
Kurt, the biggest drawback I see on the Cub 6-volt system is the distance between the battery (under the seat) to the starter motor. On my just-restored Cub, I had a 2/0 cable custom made and the starter spins just as good as my 6-volt Super C when the battery is well-charged. No problems starting as long as the engine is timed properly.



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john d

11-28-2005 15:50:28




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
I don't think there would likely be any advantage on a cub. On a bigger tractor that's been tinkered with to include high compression and oversize pistons, 12 volts may be needed to crank them under some conditions. 6 volts will start a stock antique tractor if the wiring, starter, connections, and ignition system are well maintained.



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old

11-28-2005 14:01:18




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
Biggest reason people do that is because the engine get worn and will not start on 6 volts any more, plus alternators just plain stand up better and take less to keep them working right then a genny system does. But if its works well on 6 volts I would not change it, plus out there it never gets cold enough to have much problems with starting on 6 volts as long as you keep it tuned up and maintaned

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R-cubed

11-28-2005 13:31:43




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
My $.02 worth, If you have a Cub that charges I would agree that it's a lot more trouble than it's worth. On my Cub I took off the junk generator and retired it. Could be the regulator, who knows? Put a magneto on and charge the battery once in a while so it will start. I've about given up on putting an alternator on it because there's so little room it would need a sub sized one and I won't slot the hood. With a battery ingition and no charging it would run out of juice eventually and that's not acceptable.

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CNKS

11-28-2005 12:50:17




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
If you mean converting to a 12 volt alternator, they are pretty much trouble free, generators need repair occasionally. A far as starting, the small engine in your 6 volt Cub should not give you any trouble if you keep your connections clean. Some people convert to be "modern". On a little used tractor you probably won't notice the difference. Actually, I have as much trouble with my little used 12 volt alternator equipped M as I do with my other 6 volt tractors. So it's really maintenance, not volts that count. Up to you.

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John T

11-28-2005 12:43:01




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 Re: 12 volt vs 6 volts in reply to Kurt in Va Beach, 11-28-2005 12:29:39  
Kurt, if its only a lil Cub you need to start, I see no advantage on butchering things up to convert it to 12 volts. Now on a bigger tractor it can be an advantage to help them start in extreme cold temperatures, but with a good battery and big battery cables a lil Cub ought to start unless its totally worn out and needs major work and tune up etc.

John T



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