8 Volt Battery??

The Cub Club -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
OakhillOrchard
Posts: 4
Joined: Sun Nov 10, 2019 11:10 pm
Zip Code: 46304
Tractors Owned: 1962 Cub
2009 Bobcat CT 235 (rebranded Kioti)
Location: Chesterton, Indiana

8 Volt Battery??

Postby OakhillOrchard » Tue Nov 12, 2019 11:20 pm

Better to ask first. Can/should I use an 8-volt battery on my 62 Cub; its set up for 6 volt. I have a spare 8 volt on hand and thought it might work. Not opposed to buying a 6 volt, just trying to be frugal. Sometimes frugal means buying new.

Thanks.

Jim Becker
Team Cub
Team Cub
Posts: 14944
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: 8 Volt Battery??

Postby Jim Becker » Wed Nov 13, 2019 12:29 am

You can use it, unlikely to damage anything. The problem is your tractor may not do a good job of charging the battery unless you tweak the voltage regulator. I don't generally recommend trying to adjust a voltage regulator that is working. They are easy to mess up, new ones cost as much as a battery, and seem to be less reliable than the old ones.

Were it mine, I'd probably put the 8-volt battery in but not mess with the regulator.

inairam
5+ Years
5+ Years
Posts: 1582
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 with c-2 mower & c-54 grader blade 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v
1975 with homemade mower 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 6 v
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 8 Volt Battery??

Postby inairam » Wed Nov 13, 2019 8:11 am

The effort to get it to work is more than the effort to fix the charging system /battery issue you have. You can get a battery tester/ charging system tester on amazon or ebay for $20-30 making is very easy to troubleshoot.
When you only have 9 horsepower you need to know the names of all of the ponies!

ajhbike
501 Club
501 Club
Posts: 1075
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 8 Volt Battery??

Postby ajhbike » Wed Nov 13, 2019 8:13 am

We have a local collector who has about 20 farmalls and he told me the first thing he does is put in an 8V battery where they haven't been converted to get the crank.

Scrivet
10+ Years
10+ Years
Posts: 2880
Joined: Sun Apr 19, 2009 9:51 pm
Zip Code: 63664
Location: MO, Potosi

Re: 8 Volt Battery??

Postby Scrivet » Wed Nov 13, 2019 8:18 am

inairam wrote:The effort to get it to work is more than the effort to fix the charging system /battery issue you have.........
The OP doesn't say anywhere I see that he has a "charging system/battery issue", just that he has one on hand and wonders if it will work to save some money.

inairam
5+ Years
5+ Years
Posts: 1582
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 with c-2 mower & c-54 grader blade 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v
1975 with homemade mower 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 6 v
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 8 Volt Battery??

Postby inairam » Wed Nov 13, 2019 11:26 am

Scrivet wrote:The OP doesn't say anywhere I see that he has a "charging system/battery issue", just that he has one on hand and wonders if it will work to save some money.
Re reading I see Thank you

I still think it is not worth the effort vs cost of the battery. The 6-volt regulators are iffy to begin with and messing with them to get more output seems risky to me and end up getting a new regulator..

At far as a standing practice to convert to 8 volts I have a lot of 6 volters and they crank fine. I can start all them in second gear on level ground and some I can start in 2-second gear with PTO to mott mower engaged.

The correct #2 cables and a good ground ( not to the sheet metal of the battery box but to the mount for the battery box) do the most of the cranking on 6 volts cub. I do run multi-weight oil as well.
When you only have 9 horsepower you need to know the names of all of the ponies!

halftonstude
Cub Star
Cub Star
Posts: 118
Joined: Sun Sep 30, 2018 3:09 pm
Zip Code: 06482
Circle of Safety: Y

Re: 8 Volt Battery??

Postby halftonstude » Wed Nov 13, 2019 6:21 pm

the 8 volt battery will work until it has discharged to a point where the open terminal voltage is near to the 6 volt battery. There are many formulas that relate specific gravity of the electrolyte to open terminal voltage, but an 8 volt battery being charged at a 6 volt rate will guarantee you failure in the long term. Discharge of the battery will cause sulfatio:, its a natural process of the discharge reaction of both the positive and negative plates. There are a lot of snake oil salesmen out there telling you how to rid yourself of sulafation, but you're losing active material - which means capacity - and you'll lose your battery in the long run. I know i've cranked my cub with a 12 volt battery to get it started, and let the generator take over with the electrical system after it's running, but it's just the starter motor using the 12 at that point - short term cranking, no excessive heat, and the brushes have enough pressure to take the extra current. With the 8 volt battery and a 6 volt charging system that'll probably be putting out 7.2 the 8 volt battery will be severely undercharged, and fail shortly thereafter; so it won't work for a long term solution for very long. I'm not sure of the range of the 6 volt regulators, i've repaired many and tuned many up to perform quite well, even some of the new ones. they all require adjustment, and whether they're two or three relay versions, they're persnickety, but they perform pretty well. I just put a new regulator from steiner on my '52 cub and had to make many adjustments, and i know at charging voltage the points on the voltage relay are pretty close to closed all the way, so there's not much room for further voltage increases. The points on the voltage relay need to open and close to regulate the voltage that's charging the battery... .030? .025? I can't remember the gap at the top of my head but since it started at over 1/16" and is now close to being always closed, there' not much more room for increase. there are two windings on that relay that counter-act each other to cause it to do its job. it might be possible to take a 12v and open the points farther, but i'd have to read up on the range of those as well. They aren't that fussy, they need to match the current output of the generator, the field current of the generator, and voltage of the battery. it's quite possible to mix and match to get something to work...
c

inairam
5+ Years
5+ Years
Posts: 1582
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 with c-2 mower & c-54 grader blade 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v
1975 with homemade mower 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 6 v
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 8 Volt Battery??

Postby inairam » Thu Nov 14, 2019 9:07 am

I am not saying it is not possible I am saying, in my opinion, it is not worth the effort.
When you only have 9 horsepower you need to know the names of all of the ponies!

User avatar
John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
Posts: 23373
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: 8 Volt Battery??

Postby John *.?-!.* cub owner » Thu Nov 14, 2019 5:01 pm

I am an electronics technician by trade and antique machinery hobbyist by training as a youth and preference as I am older. An 8 volt battery in an older charging system that still has a cutout will give you a little higher starting voltage due to the fact the control is the HI-LO position of the light switch controls current, not the voltage as a regulator does. The lower current is due to the fact that each battery cell produces 2.2 volts, and to get an 8 volt battery in the same size housing the cells have to be smaller, so the current they can produce is less. An 8 volt battery in a system wit a voltage regulator will just be a partially charged 8 volt battery. The regulator can be adjusted for 8 volts, but my question is why bother?
If you are not part of the solution,
you are part of the problem!!!

User avatar
ShawnAgne
501 Club
501 Club
Posts: 640
Joined: Sat May 07, 2016 5:13 pm
Zip Code: 45380
Tractors Owned: 1952 Cub w/ 184 motor (Kid)
12V with Petronix
IH 3160 Mower Deck
54 Leveling Blade
193 Plow
IH528 Trailer
Front/Rear Weights
Farmall 300 (Clarence)
12V with Petronix
Woods L306 72"
Circle of Safety: Y
Location: Versailles, Ohio

Re: 8 Volt Battery??

Postby ShawnAgne » Fri Nov 15, 2019 4:22 pm

My 300 was converted to 8volt when I got it. Didn't realize it until I converted them both. Assuming the regulator was adjusted.
Shawn Agne

halftonstude
Cub Star
Cub Star
Posts: 118
Joined: Sun Sep 30, 2018 3:09 pm
Zip Code: 06482
Circle of Safety: Y

Re: 8 Volt Battery??

Postby halftonstude » Mon Nov 18, 2019 4:42 pm

100% John *.?-!.* Not worth it.
c

Nelson 634
Cub Star
Cub Star
Posts: 146
Joined: Thu May 24, 2018 9:57 pm
Zip Code: 22958
Tractors Owned: 5 Cubs
1952 100
1960 460 Utility
Location: Central Va.

Re: 8 Volt Battery??

Postby Nelson 634 » Mon Nov 18, 2019 4:57 pm

Am understanding correctly, an eight volt battery may give you better starting capabilities (rolling the engine over) and can be sufficiently charged by an early year cub with a cut out. (Not a voltage relay.) I ask as I have a cub which came with an eight volt battery and has a cut out which I have had concerns about. Next question, will it harm or degraded the performance of other parts of the six volt system. Thanks for any and all answers, you guys and Gals are great. Walter

Jim Becker
Team Cub
Team Cub
Posts: 14944
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: 8 Volt Battery??

Postby Jim Becker » Mon Nov 18, 2019 9:06 pm

Nelson 634 wrote:Am understanding correctly, . . .

Yes Most components won't be bothered much by 8 volts. Bulb life will probably be shorter, but little enough that you might not notice it.

inairam
5+ Years
5+ Years
Posts: 1582
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 with c-2 mower & c-54 grader blade 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v
1975 with homemade mower 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 6 v
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 8 Volt Battery??

Postby inairam » Tue Nov 19, 2019 7:23 am

Jim Becker wrote:
Nelson 634 wrote:Am understanding correctly, . . .

Bulb life will probably be shorter, but little enough that you might not notice it.


You may be able to run 12v led bulbs at 8-9 volts charging range with the engine on. Most of the specs I have seen say they go that low.

Bach to a good tune-up, clean dry gas and a rebuilt carb will do more for power and starting than using "cough syrup" to get hid to the symptoms of hard starting.
When you only have 9 horsepower you need to know the names of all of the ponies!

Nelson 634
Cub Star
Cub Star
Posts: 146
Joined: Thu May 24, 2018 9:57 pm
Zip Code: 22958
Tractors Owned: 5 Cubs
1952 100
1960 460 Utility
Location: Central Va.

Re: 8 Volt Battery??

Postby Nelson 634 » Tue Nov 19, 2019 8:59 pm

Good to Know. Thanks to all.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: 790rivers, Bill, Peter Person, SONNY and 3 guests