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Pabst motor

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Buck Frobisher

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Apr 14, 2002, 12:55:58 PM4/14/02
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this is the motor I imagined when someone talked about a Pabst motor.

http://www.psstorage.com/ebay/lynn/rek/111-1170_IMG.JPG

actually, it's from an eBay listing mentioned on RAM. here's the listing:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1346228087

many interesting views of the table, the Rec-O-Kut.

or is this where the thread started?

--
"Famous last words: Don't unplug it, it will just take a moment to fix."

regards,

Frank Johansen
Aurora, Ontario


John Byrns

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Apr 14, 2002, 2:50:56 PM4/14/02
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In article <W6ju8.1044$YB5.2...@news20.bellglobal.com>, "Buck Frobisher"
<farsi...@hotmail.com> wrote:

> this is the motor I imagined when someone talked about a Pabst motor.
>
> http://www.psstorage.com/ebay/lynn/rek/111-1170_IMG.JPG
>
> actually, it's from an eBay listing mentioned on RAM. here's the listing:
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1346228087
>
> many interesting views of the table, the Rec-O-Kut.
>
> or is this where the thread started?


If I remember correctly how the thread started, and the Rek-O-Kut model in
question, I assumed we were talking about the famous Pabst external rotor
hysteresis synchronous motor, which is quite different from the one
pictured here. I sure Pabst made many different types of motors, but the
one people seem to talk about with respect to turntables has the rotating
part on the outside, sort of inside out. I have to otherwise identical
Rek-O-Kut turntables with the same model number, one that I bought for
$5.00 for parts, and they have two different types of synchronous motors
in them, one being the Pabst external rotor type.


Regards,

John Byrns


Surf my web pages at, http://www.enteract.com/~jbyrns/index.html

Buck Frobisher

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Apr 14, 2002, 3:47:49 PM4/14/02
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thanks, John. do you have a picture of that motor?

--
"Stay calm. Be brave. Wait for the signs."

regards,

Frank Johansen
Aurora, Ontario

"John Byrns" <jby...@enteract.com> wrote in message
news:jbyrns-1404...@216-80-98-117.d.enteract.com...

Richard Steinfeld

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Apr 15, 2002, 12:07:47 AM4/15/02
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Oh, it was me. I started the thread.

> this is the motor I imagined when someone talked about a Pabst motor.
>
> http://www.psstorage.com/ebay/lynn/rek/111-1170_IMG.JPG
>

1. Bitte, mein Deutsch ist nicht zehr gut. The motor is made by "Papst," but
I spelled it like beer. Ich war ein dumkopf!

2. This is not my motor. My turntable is an N-33h, a newer model that was
almost great for stereo. Lynn's machine is the older
double-idler-with-"gearshift" setup. My platter shaft design is the same as
hers, however.

My Papst motor is like another poster said, an inside-out design with the
rotor on the outside. There is an additional open frame outside the rotor.
What's especially unusual about it is the way that the motor's shaft is
machined into a pulley for the drive belt. I think that my Miracord 50h has
a similar, but smaller Papst motor.

3. I still need some input about how to safely take the motor apart so's to
clean and lube it. The time has come for this after 43 years, I think. I
wrote an email to Papst in
Germany, but they haven't answered me.

4. I like the way Lynn listed her table on eBay. It is refreshing to read an
honest listing for a change.

Thanks all.

Richard


Steven V.A.

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Apr 15, 2002, 3:00:14 PM4/15/02
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"Richard Steinfeld" <rgs...@sonic.net> wrote:

>My Papst motor is like another poster said, an inside-out design with the
>rotor on the outside. There is an additional open frame outside the rotor.
>What's especially unusual about it is the way that the motor's shaft is
>machined into a pulley for the drive belt. I think that my Miracord 50h has
>a similar, but smaller Papst motor.

I have the same motor in my ACEC tube reel to reel recorder.

Disassamby of the motor was quite straightforward.
One of the nicer electrical motors i've seen


HTH
Steven
---
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And a Great Earthquake...A Giant Condor That Wheels In The Sky...
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Mike Knudsen

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Apr 15, 2002, 9:59:21 PM4/15/02
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In article <8i3mbuockdf19b1bs...@4ax.com>, Steven V.A.
<steven.v...@yucom.be> writes:

>>My Papst motor is like another poster said, an inside-out design with the
>>rotor on the outside. There is an additional open frame outside the rotor.
>>What's especially unusual about it is the way that the motor's shaft is
>>machined into a pulley for the drive belt. I think that my Miracord 50h has
>>a similar, but smaller Papst motor.
>
>I have the same motor in my ACEC tube reel to reel recorder.

I once had a vintage 1960s Grundig reel-to-rell tape machine with such a motor.
Its surfaces had a matte light green finish. The pulley was machined into the
outer end of the rotor -- actually two pulleys -- the recorder changed speeds
by shoving the belt from one sheave to the other. Very smooth and quiet motor.
Would Papst have been the supplier? --Mike K.

Oscar loves trash, but hates Spam! Delete him to reply to me.

Buck Frobisher

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Apr 15, 2002, 10:56:30 PM4/15/02
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I'd still love to see a picture of the "outer rotor" (armature?) version.
anyone have one they can put up on ABPR?

--
"Stay calm. Be brave. Wait for the signs."

regards,

Frank Johansen
Aurora, Ontario

"Mike Knudsen" <knud...@aol.com.Oscar> wrote in message
news:20020415215921...@mb-de.aol.com...

John Byrns

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Apr 16, 2002, 2:58:29 PM4/16/02
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In article <w1lu8.1599$YB5.2...@news20.bellglobal.com>, "Buck Frobisher"
<farsi...@hotmail.com> wrote:

> thanks, John. do you have a picture of that motor?


No, sorry I don't have any pictures, if I had a digital camera I could
take one, but I don't have a digital camera. I took a look at the motor I
was speaking of on my Rek-O-Kut, and it wasn't exactly the motor I was
thinking of. It was basically what I was thinking of, but it seemed
smaller in diameter than the one I was thinking of, the ribbing on the
outside of the rotor was deeper than the one I was thinking of, and there
was a sort of protective fixed sheet metal band outside the rotor, that I
don't remember on the motor I was thinking of. So there seem to be
several flavors of these external rotor synchronous motors out there, I
wonder if the one in my Rek-O-Kut is even made by Papst, as I thought the
Papst looked somewhat different. I had mentioned that the Rek-O-Kut I
bought as a parts unit had a different sort of synchronous motor. I had
thought this was the same model, but apparently it isn't because I think
this other motor is a simple four pole type, not a synchronous type as it
doesn't have a phase shift capacitor with it.

Stein-Olav Lund

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Apr 16, 2002, 4:52:17 AM4/16/02
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Mike Knudsen wrote:

> I once had a vintage 1960s Grundig reel-to-rell tape machine with such a motor.

> .
> Would Papst have been the supplier? --Mike K.

Yes, probably. I have seen Papst motors in Grundigs, some of their models
actually had no power transformer but used a secondary winding on the motor
to supply the electronics.
I have the impression that the better European models were equipped
with Papst motors, they run smoothly and silently but cost more.

Stein


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Steven V.A.

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Apr 17, 2002, 1:40:42 PM4/17/02
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knud...@aol.com.Oscar (Mike Knudsen) wrote:

>I once had a vintage 1960s Grundig reel-to-rell tape machine with such a motor.
> Its surfaces had a matte light green finish. The pulley was machined into the
>outer end of the rotor -- actually two pulleys -- the recorder changed speeds
>by shoving the belt from one sheave to the other. Very smooth and quiet motor.
> Would Papst have been the supplier?

Very likely, since it's an exact description of the Pabst motor that's
used in my ACEC recorder (from 1960)

The speed mechanism is slightly different however: on the moter
are 3 wheels mounted (different sizes) and a second (rubber) wheel is
pressed against it. The recorder however has four speeds - for the
lowest speed, the rubber wheel is pressed against the moter itself.

Nice, and it even worked after 40 years like new :)


Greetings,

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