Subject: Rewiring a motor on a forge

From: [email-masked]
Date: Tue, 13 Aug 1996 00:10:45 -0400

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Date: Tue, 13 Aug 1996 00:02:47 -0400
From: [email-masked]
Message-ID: <[email-masked]>
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Subject: rewiring motor on a forge

Okay.  I found a beautiful forge in an antique store for $40 plus tools and a
hood.  bought it.
Now I need to put a plug on it to see if the motor works.  Here's the info on
the name plate:

Dayton DC 12 volt

model # 2c646

12 DC

1/35 HP

1480 RPM

4.30 amp

My question is how do I rewire a dc motor?  Do I need a special plug for it?
  How do I tell which wire goes to the motor and which to the ground, etc?
  There's split wire hanging  from the side--or a double wire?  
Anyone have any advice?

Thanks.

Cynthia

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From: [email-masked] (C.Morton)
Date: Tue, 13 Aug 1996 16:00:43 +1000

>Cynthia

You havent been specific in stating exactly what voltage you want to wire
the forge to.

If as I suspect you believe that you can simply change the plug and wire it
up to a (115voltAC or 240volt AC Im not sure what voltage your mains supply
is) then please dont.
The first incompatibility is the voltage 240? v 12
The next incompatibility is AC (Alternating Current) V DC (Direct Current)
The easiest way to deal with the problem Is go to your nearest auto
accesories dealer and buy a cigarette lighter adaptor and wire that up to
your forge and plug that into the cigarette lighter plug in your car.Hey
presto it works, you may try changing the polarity to see which has the
greatest out put on the forge blower.

Next option. If the forge is going to be permanently mounted then you may
consider using a car battery charger(make sure that the output of the
charger is 5amps continuous not 5amps RMS)and it may help to use an old
battery across the out put of the charger.
The system that I just described Was used to power a car heater fan on a
1.5 metre gas forge of mine for a few years.
*******************************
Colin Morton  [email-masked]
*******************************

*******************************
Colin Morton  [email-masked]
*******************************

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From: Dave <[email-masked]>
Date: Tue, 13 Aug 1996 06:52:01 -0500

>  There's split wire hanging  from the side--or a double wire?

Cynthia - 

  I don't think that "rewire" is what you really meant.  I think you meant
that you want to wire (connect) your motor to an electrical power source.
Well, here's my limited view of what I think that I remember I may have
learned about the subject:

DON'T try to connect the motor to an AC power supply.  120vAC, or even worse
yet 240vAC, fed to a 12v motor will certainly ruin the motor in short order.

You need a 12v power supply.  This can be either a car battery, or make a
visit to your local Radio Shack or electrical supply house and tell them
what you are looking for and to application you want it for.

Also you'll need a rheostat suitable to the power/amperage combination.
This is so you can control the blower's speed, or volume output.

As to the split wire, that's easy.  Polarity doesn't matter, except in that
it determines the direction in which the motor spins.  Connect it first one
way and see if it turns the right way (check for air output from you
blower).  If not, then simply reverse the connections to reverse the
direction of spin.

When satisfied, solder your wire connections, don't simply twist them
together.  Oh yeah, don't forget to wrap them with good electrical tape when
finished.

good luck.

Dave Brown
Heritage 'Smithing
Heritage Hill State Historical Park
Green Bay, WI

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From: "daryl (d.a.) bender" <[email-masked]>
Date: Tue, 13 Aug 1996 10:14:00 -0400 [/PRMD=BNR/ADMD=TELECOM.CANADA/C=CA/;bcars520.b.264:13.07.96.14.19.25]

In message "Rewiring a motor on a forge", [email-masked] 
writes:
>Okay.  I found a beautiful forge in an antique store for $40 plus tools
>and a hood.  bought it. Now I need to put a plug on it to see if the
>motor works.  Here's the info on the name plate:
>
>Dayton DC 12 volt
>model # 2c646
>12 DC
>1/35 HP
>1480 RPM
>4.30 amp
>My question is how do I rewire a dc motor?  Do I need a special plug
>for it? How do I tell which wire goes to the motor and which to the
>ground, etc? There's split wire hanging  from the side--or a double
>wire? Anyone have any advice?
>>Thanks.
>>Cynthia

Hi Cynthia

It depends on the type of DC motor it is. It doesn't sound like a 
"universal" so you will not be able to plug it in. You will either need 
to run it from a battery or have a power supply in between the motor and 
the "plug" or AC.
I would get a car battery and touch the wires to the battery terminals. 
Most DC motors are not polarity sensitive (other than changing 
direction). This will confirm the motor works and what wire should be 
positive/negative.
I can tell you how to make a supply (I have a 24Vdc motor on my forge) 
but unless you know a surplus electronics store it will cost a few 
bucks. Otherwise it's battery city.

Cheers
Daryl

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From: [email-masked] (Raymond Coon)
Date: Tue, 13 Aug 1996 13:08:30 -0700 (PDT)

>--AAA26633.839908974/emout19.mail.aol.com--
Cynthia,

I don't know where you are with electricity so I'll aim low.  You won't
likely "plug it in" anywhere.  It looks like you have bought a setup that
was maybe on someone's truck, maybe a farrier....whatever.  12 volts means
that it can be run off of a car battery or a transformer of some kind.

Best plan is to touch the wires to the terminals of a 12 volt battery.  If
it runs, you're in business.  If not, you may want to change the motor or
have someone look at it.  Replacement is likely cheaper in the long run than
rebuilding it.  Also, you can change it to the voltage that you want.

Be careful.  Your messasge sounds like you are ready to plug it in to 120v.
Don't.

Luck

---

From: [email-masked] (Michael G. Cooper)
Date: Tue, 13 Aug 1996 21:07:07 -0700 (MST)

>I don't think I'd mess with the DC blower.  It'll probably cost you as much
to come up with a power supply for it as it would to replace it with a 110V
blower.  The only reason for using the 12V DC unit would be if you plan to
use the forge in the outback and run it off your car battery.  If you poke
around the swap meets, yard sales and junk yards in your area, you'll find a
110V AC blower you can adapt to the manifold of your forge.  I've found
useable blowers at aircraft/electronics salvage yards and swap meets.  If
you're flush, you can pop over to Grainger's or your local hardware and buy
a new one.  Look for something with about 150 cfm output.  Lots of
electronic equipment (computers, transmitters, etc.) use blowers.  Don't buy
anything without a spec plate and look for 110V, 60Hz supply voltage.