Re: Brazed, Soldered or What?

[Jessica & Donald Jansen & Crabtree <crabtrdw@earthlink.net>]

Hi,
I replaced a terminal on a 7" Prest0lite once. I got a new terminal from a
motor rebuild shop,
use silver solder left over from another project. The terminal  has a cross
slot on the inside end,
in which the motor copper can be crimped, but this serves only to hold the
wire in place while
it is being silver soldered. It takes higher temperature to melt silver
solder. A propane torch
will work in some cases, but an oxy-act. torch produces more heat. Be sure
to protect the
surrounding insulation. I used an old piece off towel soaked in water,
("The Time Keeper"
gets really upset when I use the new ones).
Someone may have a betterway to protect the insulation, because I burned
off about 3/8"
next to the solder joint.
The Baker fork lift motor that I reversed rotation in, had 3/8 brass bolts
with over sized but thin
heads. The motor lead had an extra heavy terminal end like piece of copper
silver soldered on,
for the bolt to pass through.
-Father Time-

Mike Chancey wrote:

> Hi all,
>
> I am fixing up an '80 Comutacar that I bought last week (yes, I needed
> another EV project like a hole in the head).  The previous owner had
> replaced the battery cables and some of the contactor cables.  Somehow
> an over-length cable was allowed to rub against one of the field
> terminals on the motor and a catastrophic short resulted.  The field
> terminal was burned off the motor, and sort of welded itself into the
> offending cable.  Now otherwise the motor is fine, and checking it with
> a multimeter it showed no shorts to ground.  I have already removed it
> from the car, and was hoping to just replace the melted terminal.  How
> on earth are those connected to the field windings?  It kind of looks
> like solder, or is it brazing, or something else?  I am starting to
> suspect what ever it is, I will have to pay someone else to repair it.
> Could anyone give me some hints here?
>
> Thanks,
>
> Mike Chancey
> evtinker@hotmail.com
> EV List Photo Album at:http://www.geocities.com/MotorCity/Track/4936/
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>
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