Re: Delco Electric Motor

I think you will find that one each red wire is currently connected to one
each black wire, and so reversing the red wires reverses the relative phase
of hte starting motor.

typically, there is a run winding and a start winding. the start winding is
switched through a centrifugal switch.

There are diagrams on line for many motors - have you tried looking? have
you used an ohmmeter to see what is what with those posts? It sounds like
you connected the power across the start switch, which would not be a good
thing

"John Weeks" <jhweeks@xxxxxxxxxxxxx> wrote in message
news:f9uog45fb8i6emeellh717a6h2rlqe458n@xxxxxxxxxx
One of the things I salvaged from the farm was an old Delco electric
motor - Model A8280CC. This is an oooold motor - it's got oil caps to
oil the shaft bearings - sleeve bearings, I'm sure.

So I'm planning on aquiring a Beal Buffing System sometime in the not
too distant future and I was digging around in my box of old electric
motors and came on this one. 1/3 hp, 1750 rpm, just what the doctor
ordered. When I wiped of the plate, there was a note stamped on it -
to referse the direction of the motor, switch the red leads. Oh my!
Now I'm seeing a buffing/honing system!

I took the plate off the connection point and there were four posts
sitting there. Hmmm. The only current the the farm was straight 120,
never anything fancy like 3-phase or anything, so I'm puzzled - where
do two hot wires go, that can be reversed? Google the model number,
nothing.

So I hauled it down to a local electric motor repair shop and asked
them if they could tell me how to wire it up. The fellow poked around
for a minute, wiped some crud off the interior, and showed me the two
red wires in there that were to be switched. He said to just put the
common and power leads across the two top posts, didn't matter which
way.

I hooked up a power cord and slowly inserted the plug - sizzle crack!
The circuit breaker did it's job. Ok, maybe it does make a difference
which way it's wired - switched the wires, plugged it in, no sizzle
crack, but the circuit breaker opened.

I have another motor, 3/4 horse power farm duty motor I could use, but
I don't think it can be reversed. I'm going to take the Delco back and
see how much they'd charge to work on it. See if they have a
reversible motor for less money. I could tear the Delco down, but I
wouldn't know what to look for.

JW


** Posted from http://www.teranews.com **
.

Relevant Pages

  • Re: Please Help Me Wire A Reversing Switch
    ... which you've transferred the Y and B wires, ... anything else in the motor (like the starter switch). ... recognise that I have to put the main live through this reversing ...
    (uk.rec.models.engineering)
  • Re: Questions on Frankenstein Servo motor from BAA
    ... Motor will have 3 ... The black and red wires need to switch ... believe 15 years time seperating display graphics and we are going ...
    (rec.games.pinball)
  • Re: ezilla to accept ladder packs
    ... Above is what I was planning on doing to my Savage when my motor ... and the roller (no electronics) cost him $1200 used. ... I recon if that guy moved his esc to the front of the chassis, ... replaced the motor and battery wires. ...
    (rec.models.rc.land)
  • Re: ezilla to accept ladder packs
    ... My 2 pairs of matched 3300mah batteries give me ... I recon if that guy moved his esc to the front of the chassis, ... where the receiver was and running 2" long wires to the motor, ... replaced the motor and battery wires. ...
    (rec.models.rc.land)
  • Re: 208-230V Single Phase Motor wiring
    ... You also don't mention what voltageS your motor is labeled. ... wires 1 and 8 are NOT VISIBLE, and that gets up to a free ... wire number "7" tag, is for a "Capacitor start, single phase, ... has the meter rise very quickly and continue moving up. ...
    (rec.crafts.metalworking)
Loading