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Alternator for 47 cub
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- RedTom
- 5+ Years
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- Joined: Sun Sep 03, 2017 11:17 pm
- Zip Code: 75459
- Tractors Owned: 1947 Cub Farmall "Frances"
- Location: Howe, Tx
Alternator for 47 cub
My understanding is that early cubs pulley on fan is smaller diameter than later cubs. Does this make a difference when choosing a 12 volt alternator for upgrade to 12 volt system. Want to make sure it will work with what I assume would be lowered RPM from a smaller pulley.
Thomas Red - Tractor Newbie
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1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide - Circle of Safety: Y
- Location: Glen Mills PA
Re: Alternator for 47 cub
Redtom
The early cubs did have a different fan hub assembly. I have only converted 12-volt cubs to an alternator but I do not recall ever reading on the forum of anyone switching the hub on an early cub to do the conversion.
The ask a different question why are you planning the switch?
The early cubs did have a different fan hub assembly. I have only converted 12-volt cubs to an alternator but I do not recall ever reading on the forum of anyone switching the hub on an early cub to do the conversion.
The ask a different question why are you planning the switch?
When you only have 9 horsepower you need to know the names of all of the ponies!
- Slim140
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1970 International 140
1972 International 140
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Re: Alternator for 47 cub
I converted our ‘47 to 12V and didn’t even think about the pulley size. Been working good for a couple years with no issues.
Every home is a school, what are you teaching?
- RedTom
- 5+ Years
- Posts: 56
- Joined: Sun Sep 03, 2017 11:17 pm
- Zip Code: 75459
- Tractors Owned: 1947 Cub Farmall "Frances"
- Location: Howe, Tx
Re: Alternator for 47 cub
Needs new battery and 12 volts would be handy to be able to run sprayer or brighter lights
Thomas Red - Tractor Newbie
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Re: Alternator for 47 cub
Do you plan to keep the magneto or convert (or change it) to a battery ignition?
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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1948 Cub "Rusty"
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1948 Cub "Sallie" (wife's tractor)
1965 IH Cub "Annie"
1943 Farmall H
1953 Farmall Super M (granddad's tractor)
Re: Alternator for 47 cub
I converted my 48s to 12v but I don't know if they are smaller like your 47 your talking about. If they are in have no issues. A 12v upgrade is definitely a plus. You will get a little criticism from.the purists but in today's times a 12v alternator and battery is about the same.price as getting just the generator fixed or finding a 6v battery in most places
1948 Cub "Trusty"
1948 Cub "Rusty" mower tractor, trimmed ear dash
1948 Cub "Bob"
1948 Cub "Sallie"
1965 IH Cub "Annie" mower tractor,
1943 Farmall H,
1953 Farmall Super M
1948 Cub "Rusty" mower tractor, trimmed ear dash
1948 Cub "Bob"
1948 Cub "Sallie"
1965 IH Cub "Annie" mower tractor,
1943 Farmall H,
1953 Farmall Super M
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- 5+ Years
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- Joined: Wed Jul 08, 2015 10:24 am
- Zip Code: 19342
- Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide - Circle of Safety: Y
- Location: Glen Mills PA
Re: Alternator for 47 cub
jsfarmall wrote:I You will get a little criticism from.the purists
I like my 6 volt systems. Just gives me something different to think about. If you have a reason to convert like running a sprayer, more lighting or anything increasing the electrical load for that matter that is a good plan in my opinion. A 6-volt cub with a generator and the standard lights on can just bearly keep up with the electrical load. ( BTW there are a number of 12 LED options at the 12-volt negative ground that fit into the teardrop lights. It will save you ~5-7 amps at 12 volts)
My issue is when people say they are converting "to make it easier to start". I have started my 6v cubs in 2nd gear to demonstrate you can start fine with 6 volts. I once by accident started a 6 volt in gear with the PTO engaged driving a Mott mower I have started my cub in winter ( Philidelphia, PA area) after 4-5 weeks of sitting.
A 12 v conversion does not help a carburetor that needs an overhaul or a cub in need of a tune-up.
When you only have 9 horsepower you need to know the names of all of the ponies!
- Glen
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Re: Alternator for 47 cub
Hi,
IH made the generator pulley size bigger in 1953, starting at Cub serial number 165153, Raymond Durban's database says.
On the Cubs I have seen, it makes the generator start charging at a slower speed to have the bigger pulley.
If your fan assembly has been replaced, then it could have either size pulley.
Below are pics from TM Tractor of the 2 different size generator pulleys used on the Cub.
IH made the generator pulley size bigger in 1953, starting at Cub serial number 165153, Raymond Durban's database says.
On the Cubs I have seen, it makes the generator start charging at a slower speed to have the bigger pulley.
If your fan assembly has been replaced, then it could have either size pulley.
Below are pics from TM Tractor of the 2 different size generator pulleys used on the Cub.
- RedTom
- 5+ Years
- Posts: 56
- Joined: Sun Sep 03, 2017 11:17 pm
- Zip Code: 75459
- Tractors Owned: 1947 Cub Farmall "Frances"
- Location: Howe, Tx
- RedTom
- 5+ Years
- Posts: 56
- Joined: Sun Sep 03, 2017 11:17 pm
- Zip Code: 75459
- Tractors Owned: 1947 Cub Farmall "Frances"
- Location: Howe, Tx
Re: Alternator for 47 cub
I should've searched the now to forum, excellent how to "Re: I will be installing an alternatior on this original cub". Also note on which NAPA alternator that works with smaller fan pulley. Thanks again.
Thomas Red - Tractor Newbie
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PTO belt pulley, snow plow and misc parts. - Circle of Safety: Y
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Re: Alternator for 47 cub
RedTom wrote:I should've searched the now to forum, excellent how to "Re: I will be installing an alternatior on this original cub". Also note on which NAPA alternator that works with smaller fan pulley. Thanks again.
RedTom, On October 17, on the Vine, forum member Red-Bud posted an option using a smaller racing alternator that could be easily installed using the existing brackets with minimal alterations. At $39.00 for a new alternator it's reasonable prices too! Good luck, Tom.
If you always do what you've always done -- you'll always get what you've always got!
- Don McCombs
- Team Cub Mentor
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Re: Alternator for 47 cub
Yep, it was me. And now, I can't find that thread/post. I didn't delete it and it doesn't show up in my posts.
"Never forget where it is you come from, or you may find yourself someplace you don't want to be"
Greg Norman
Greg Norman
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- Circle of Safety: Y
- Location: AL (Southwest)
Re: Alternator for 47 cub
Cub-Bud wrote:Yep, it was me. And now, I can't find that thread/post. I didn't delete it and it doesn't show up in my posts.
This is the oldest post on THE VINE, dated November 17. viewtopic.php?f=223&t=102619 I believe there is a limit on the days a post will be displayed there.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
- ShawnAgne
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Re: Alternator for 47 cub
On my two tractors the cub definitely needs to rev higher for the alternator to kick in compared to the 300. If you are converting might want to check into electronic ignition, did that also when I converted. The LED lights are awesome, highly recommend them, you'll find reasons to use it at night.
Shawn Agne
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