[AT] Battery in backwards question

Tue Jul 22 19:08:12 PDT 2008

Both my 1996 Suburban 454 and my 2001 F250 V10 have permanent magnet 
starter motors.

It is not just the small stuff anymore.

If you reverse the battery on those beasts you have a lot more problems 
than the starter running in reverse.

Larry Goss wrote:
> @#$$%^&*(() I've been working with smaller stuff too long.  Everything I've been working with for several years uses permanent magnet starter motors.
>
> Larry
>
> ----- Original Message -----
> From: Mike Sloane <mikesloane at verizon.net>
> Date: Tuesday, July 22, 2008 16:12
> Subject: Re: [AT] Battery in backwards question
> To: Antique tractor email discussion group <at at lists.antique-tractor.com>
>
>   
>> As someone else noted, Larry, starter motors are almost always 
>> "field 
>> wound" and can only turn in one direction, regardless of the 
>> polarity. 
>> In addition, those old 6 volt motors work just fine on 12 volts, 
>> although they should not be run for more than 10 or 15 seconds. 
>> Having 
>> converted at least half a dozen Ford, JD, and IH tractors from 6 
>> volt 
>> positive ground to 12 negative, I can assure you what I wrote 
>> above is true.
>>
>> Mike
>>
>> Larry Goss wrote:
>>     
>>> Battery was in backwards and the starter wtill ran?  Something
>>> doesn't sound right.  Are you sure the tractor hasn't 
>>>       
>> been converted
>>     
>>> from 6 to 12 volts?
>>>
>>> Larry
>>>
>>>       
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>>     
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