[AT] 12V DC motor.

Fri Mar 12 06:03:12 PST 2021

Cecil,

Need to correct what I said after thinking about it for a minute. On a DC motor you need to reverse the wires on the armature to make it run in the opposite direction. This maintains motor stability. It will work reversing the windings, but the motor may become unstable. On an AC motor you can reverse either and make the motor run in the opposite direction with no issues.

Carl

----- Original Message -----
From: szabelski at wildblue.net
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Sent: Fri, 12 Mar 2021 08:51:19 -0500 (EST)
Subject: Re: [AT] 12V DC motor.

Cecil,

If the replacement motor turns the wrong way, you should be able to reverse the direction be flipping the leads on the windings. This will reverse the polarity on the coils and make it run in the opposite direction. I’ve done this with AC motors for various things.

Carl

----- Original Message -----
From: Cecil Bearden <crbearden at copper.net>
To: at at lists.antique-tractor.com
Sent: Thu, 11 Mar 2021 21:41:15 -0500 (EST)
Subject: Re: [AT] 12V DC motor.

Unfortunately I lost the piece that was broke off.  I found a new motor 
today, and will get the old one rebuilt.  I spent a couple of hours 
adapting an old ford starter motor to fit, then found it turned the 
wrong direction.  New motor was $254 with bracket and pulley.  A new 
motor on Ebay was $248, so I don't think it was too high.  Then I had to 
work on the outlet chute.  The metal is really think and due to the salt 
in the feed it is rusty..
Cecil

On 3/11/2021 8:24 AM, szabelski at wildblue.net wrote:
> Cecil,
>
> Do you have the broken pieces? This may sound a little Rube Goldberg, but you can try gluing the pieces together using super glue. If there is enough room you can glue on some plastic reinforcement to the outside surfaces or give it a coating of epoxy. It may last long enough to get you through your work while trying to get a replacement.
>
> Carl
>
>
> ----- Original Message -----
> From: Cecil Bearden <crbearden at copper.net>
> To: at at lists.antique-tractor.com
> Sent: Wed, 10 Mar 2021 22:11:56 -0500 (EST)
> Subject: Re: [AT] 12V DC motor.
>
> Carl:
> I have it drying with a fan in front of it.  The trouble is it has a
> broken brush holder.  The insulated one.  It looks like a Delco.  I once
> could order all the parts from a place in Indiana but they closed down...
> Cecil
>
>
> On 3/10/2021 9:07 PM, szabelski at wildblue.net wrote:
>
>> Cecil,
>>
>> I’m guessing that you opened up the motor in order to know that water got in. Sometimes you can simply dry out the unit by separating it into its two main parts and baking them in an oven for a short while at a low temperature to remove any moisture. Then put it back together and test it on a bench. Don’t let the parts get too hot or you may damage the insulation on the wire and there’s no coming back from that. All you really want to do is try to remove any moisture.
>>
>> Carl
>>
>>
>> ----- Original Message -----
>> From: Cecil Bearden <crbearden at copper.net>
>> To: at at lists.antique-tractor.com
>> Sent: Wed, 10 Mar 2021 21:19:24 -0500 (EST)
>> Subject: [AT] 12V DC motor.
>>
>> The motor on my feed bin that augers out the feed to my welfare cows
>> quit today.  It was a totally enclosed motor but it got water in it.  It
>> is very similar to an old late 50s early 60s Ford starter.  The front
>> end at the output is round like a motor as it is clamped in a bracket to
>> run on the feeder.   I cannot find one online, and it will be a week to
>> get one from Bar 6 in KS where it was built.   Do any of you guys have a
>> part number for something like this.
>>
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