[AT] AT Digest, Vol 119, Issue 16 tractor batteries

[jhilgartner at comcast.net]

I have a 1962 Mack model B-61 truck. It originally had a 24v. start and switched to 12 V. running. and all that was + gnd. When it was restored we changed the starter to 12 v. and did away with the series parallel switch. But it still is 12v pos. gnd. I'm thinking about changing it to neg.  gnd. My wife and I like to take it on some long trips . I use a GPS and had to do some rigging to make it work rite. Also A 12 v. alternator is much more reliable than the big old generator . Electricity does travel from neg. to pos. One of my other interests is restoring old tube type radios. I learned that from working with them. 

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Sent: Sunday, January 19, 2014 12:00:01 PM 
Subject: AT Digest, Vol 119, Issue 16 

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Today's Topics: 

   1.  Peanuts and Dr. Pepper (David Rotigel) 
   2. Re:  Tractor batteries (Ralph Goff) 
   3. Re:  Tractor batteries (Ralph Goff) 


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Message: 1 
Date: Sat, 18 Jan 2014 19:00:24 -0500 
From: David Rotigel <rotigel at me.com> 
Subject: [AT] Peanuts and Dr. Pepper 
To: Antique tractor email discussion group 
        <at at lists.antique-tractor.com> 
Message-ID: <9A1E1E91-0294-470A-AEA6-16C259C733F9 at me.com> 
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This was posted to the SEL by a member. See: http://www.youtube.com/watch?feature=player_embedded&v=BckZ4i1BzF0 
        Dave 



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Message: 2 
Date: Sat, 18 Jan 2014 19:19:12 -0600 
From: Ralph Goff <alfg at sasktel.net> 
Subject: Re: [AT] Tractor batteries 
To: Antique tractor email discussion group 
        <at at lists.antique-tractor.com> 
Message-ID: <52DB2810.2070408 at sasktel.net> 
Content-Type: text/plain; charset=ISO-8859-1; format=flowed 

On 1/17/2014 2:59 PM, charlie hill wrote: 
> Am I imagining this or wasn't there a problem back in the day 
> when someone with a 12V neg ground car touched bumpers with 
> a 6V positive (or any positive) ground car?  Metal bumpers.  I seem 
> to remember it was something that had to be taken into consideration. 
> 
> Charlie 
I think only if they were hooking up booster cables to start . 

Ralph in Sask. 



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Message: 3 
Date: Sat, 18 Jan 2014 19:22:49 -0600 
From: Ralph Goff <alfg at sasktel.net> 
Subject: Re: [AT] Tractor batteries 
To: Antique tractor email discussion group 
        <at at lists.antique-tractor.com> 
Message-ID: <52DB28E9.90707 at sasktel.net> 
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On 1/17/2014 2:47 PM, Charlie V wrote: 
> As I recall from my early days of auto training, Ford was the main brand 
> with a positive ground.  GM certainly and I think Chrysler products ( not 
> sure ) were typically negative ground. 
Charlie, I grew up thinking every thing was 6 volt, positive ground 
since we had Fords and Cockshutt tractor. I worked with a neighbour's 
Dodge pickup but can't recall anything about the polarity on that one. 
My JD AR is 12 volt positive ground. I had to mark it on the inside of 
the battery case lids as I could never remember. It took two six volts 
to make 12. I have simplified things somewhat by just using one 12 volt 
battery to start it. 
I have a Cockshutt 40 that still has the original 6 volt positive ground 
and a Cockshutt 50 converted to 12 volt negative ground. Difference? 
Well the 50 starter cranks a lot faster than the 40 but other than that, 
nothing. 

Ralph in Sask. 


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End of AT Digest, Vol 119, Issue 16 
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