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6 Volt Complete Rewire
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- 5+ Years
- Posts: 137
- Joined: Sun Dec 07, 2014 7:02 pm
- Zip Code: 32713
- Tractors Owned: FARMALL FORUM
1966 Cub w/ IH 1000 Loader
1958 LoBoy w/ Wagner 45 Loader
1952 Cub w/ Woods 48" Bush Hog
1948 Super A w/ Finish Mower
1944 A w/ 3 Point Hitch - Circle of Safety: Y
- Location: Central Florida
6 Volt Complete Rewire
I have a 1952 serial # 160546 Cub that I am starting to restore. When I bought it the generator was not installed and the former owner said the starter "dragged". The battery was connected with negative to ground. All the wiring was in poor condition. I bought a battery and had the starter rebuilt. I downloaded the electrical schematic and started to connect per the drawing. The engine turns freely using the starter. The tractor had an external coil installed. I am guessing that the magneto coil had failed. I bought a new coil from Case I H and the packing says " for 6 v without external resistor and 12 volt with external resistor". That sounds backward to me but I have temporarily connected the coil negative lead to the battery post on the starter and the positive to the distributor. I have a new rotor, set of points, condenser, distributor cap and plug wires to install. When I opened the distributor I found the pinon gear worn excessively so I have ordered a new 1. I also ordered a new voltage regulator and had the generator tested. It produced 20 amps when connected to a battery. My thoughts are that the way the battery was connected previously the voltage regulator could not have charged the battery and someone probably removed the generator thinking it was bad. Being that this is the first time I have done this I would appreciate some comments and/or suggestions.
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- Team Cub Mentor
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- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: 6 Volt Complete Rewire
Battery powered ignition systems operate at 4.5 to 6 volts. The 12 volt with external resister, the resister acts as a voltage drop.
The regulator will operate correctly if the generator is polarized. Polarization matches the generator polarity to the battery.
The regulator will operate correctly if the generator is polarized. Polarization matches the generator polarity to the battery.
I have an excuse. CRS.
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- 5+ Years
- Posts: 137
- Joined: Sun Dec 07, 2014 7:02 pm
- Zip Code: 32713
- Tractors Owned: FARMALL FORUM
1966 Cub w/ IH 1000 Loader
1958 LoBoy w/ Wagner 45 Loader
1952 Cub w/ Woods 48" Bush Hog
1948 Super A w/ Finish Mower
1944 A w/ 3 Point Hitch - Circle of Safety: Y
- Location: Central Florida
Re: 6 Volt Complete Rewire
I've been told that an 8 volt battery will work on a 6 volt system. My past experience with a 6 volt system in the winter makes me want to try an 8 volt battery. Anyone have experience with this set up ?
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- 10+ Years
- Posts: 406
- Joined: Thu Jan 02, 2014 4:23 pm
- Zip Code: 49316
- Tractors Owned: 1954 farmall fcub, 1954 farmall super m
- Location: Caledonia, MI
Re: 6 Volt Complete Rewire
The battery maybe 8 Volts but the cub won't charge to 8. Only 6. To fully charge you would have to hook up a charger to get a full charge which defeats the purpose.
- bob in CT
- Team Cub Mentor
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- Location: CT, Manchester
Re: 6 Volt Complete Rewire
I have fired my 6 volt Cub at near zero and it started on the first couple of turns. If it is in tune and you have compression, I don't think you have a problem in Central Florida.
Thanks for the reminder, though. I just pulled mine out out of the barn Cub and put it on charge in the warm garage. Bitter cold on the way.
Thanks for the reminder, though. I just pulled mine out out of the barn Cub and put it on charge in the warm garage. Bitter cold on the way.
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- Team Cub Mentor
- Posts: 20378
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: 6 Volt Complete Rewire
Suggest compression tests, dry then wet. Compression satisfactory, then check your magneto timing.
These tractors came with a hand crank to start the engine. The 8 volt battery will not improve engine starting.
These tractors came with a hand crank to start the engine. The 8 volt battery will not improve engine starting.
I have an excuse. CRS.
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- 5+ Years
- Posts: 21
- Joined: Wed Dec 31, 2014 6:45 pm
- Zip Code: 00000
- Tractors Owned: 1951 Farmall Cub
2004 Cub Cadet 812 - Circle of Safety: Y
Re: 6 Volt Complete Rewire
I believe that a 6 volt battery has a Positive ground... I am not sure if that applies to all the 6v batteries or has an effect, but the 6v Negative Ground Sounds a little funny to me... I'm not 'positive' I'm correct on this though.
George M
George M
- Buzzard Wing
- Cub Pro
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- Joined: Mon Aug 09, 2004 10:14 pm
- Zip Code: 02840
- Location: RI, Newport
Re: 6 Volt Complete Rewire
Is it a distributor or magneto?? The coil sounds right for a distributor.
Personally I prefer to replace the wiring harness, much easier in the scheme of things.
Personally I prefer to replace the wiring harness, much easier in the scheme of things.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
- Jack
- 10+ Years
- Posts: 836
- Joined: Sun Aug 14, 2005 11:14 am
- Zip Code: 16353
- Tractors Owned: 1955 Farmall Cub
1955 International 300 Utility
2018 JD loader/ backhoe - Circle of Safety: Y
- Location: Tionesta, PA.
Re: 6 Volt Complete Rewire
[quote="bob in CT"]I have fired my 6 volt Cub at near zero and it started on the first couple of turns.
like bob said, my 6 volt fires right up and it is very cold here, -2 today
like bob said, my 6 volt fires right up and it is very cold here, -2 today
Pine Meadows Farm
- Buzzard Wing
- Cub Pro
- Posts: 10540
- Joined: Mon Aug 09, 2004 10:14 pm
- Zip Code: 02840
- Location: RI, Newport
Re: 6 Volt Complete Rewire
The key to a good starting and running Cub is good electrical connections, good tune up, and good carb. If you don't have good electrical connections.... all bets are off.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
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