Presto Motor Repair???

[piaptk]

Does anyone know of anyone in the US that repairs small motors. I've got a really noisy, shaky motor on one of my 6ns and have been told it probably needs new sleeve bearings. Also wouldn't mind having my other motors serviced to minimize vibration. Any tips? Thanks!

[JayDC]

mee threee.. err too..

[JayDC]

PENN ELECTRIC MOTOR CO.

3080 Emerald Street • Philadelphia, PA 19134
Phone: (215) 426-9920 • Fax: (215) 426-4711


I just talked to these guys, and they told me the specialize in old motors. As soon as i told him what the motor was for, he understood immediately. They also can have new shafts produced from drawings.

I'm am taking my motor down tomorrow for an estimate on a complete rebuild, and also to see how much for a new motor shaft.

I'll let you know what they say, how much it is, and how comfortable i am in allowing this company to do the work.. I hope this helps..

[piaptk]

great! Look forward to hearing about it!

[JayDC]

heh, Just removed the motor and condenser. The weird thing is that the motor says on the side, use a 3.75mfd condenser, the condenser I pulled says 2.75mfd.

Now i know these numbers don't match. WTF does the condenser do anyway, and why would presto use one that is smaller then its supposed to use?

If i don't bring in the condenser, and they rebuild the motor using a 3.75mfd condenser to test it, is that going to muck things up?

Should i just bring both parts, and tell them thats how it was, and make them set everything up around the old condenser?

Am I getting anxious over nothing?

[Kris D]

Hi - The Condenser is critical in feeding correct voltage to maintain the proper 1800 rpm speed. Here are the values on the badges of Bodines I can access right now.
6 are 1/25th hp - 3.75 mu -
1 is 1/30th hp - 4 mu -from Fairchild
One 6n has a factory 2.75 installed on a motor with 3.75 on badge like yours.
8N and 8DG have 3.75 installed. I'll ask my motor guy about the values being different tomorrow.

Bottom line: do not run without a condenser!! It will run but its bad for the motor.

Good Luck - Kris

[JayDC]

Oh, I see.. Presto shipped them with a smaller condenser.. I wonder why?

Good to know your 6N is the same configuration, I was starting to think that maybe someone slapped mine together with stuff laying around..

So, I wonder how using the correct condenser would change the operation of the turntable? I better tell the guys at the motor shop that its factory like this..

[JayDC]

Ok this company was a no go, they said they would not work on a motor so old, and that they usually don't deal in motors as small as this.. Which is exactly the opposite of what the man spoke to me on the phone said. The gentleman tried to tell me the spindle was apart of the whole motor shaft (which is not the case) and told me the would not manufacture a new spindle for me. A big waste of time. They gave me a lead on a fellow that specializes on bodine motors, and said a cnc machine shop could provide a spindle, the major problem is, I cannot remove the spindle w/o a puller, and I'm am unsure of the diameter of the motor shaft.

So I suppose that I'm stuck for now, I'll investigate this bodine motor specialist.

Let me provide my calculations for a new spindle, in-case someone here has access to a cnc lathe to make new ones..


1 7/8" Total Length
Threaded hole inside 10/32
13/32" diameter (to replace the 78 size with 45rpm) 1 3/8" Length
5/16" diameter (original size for 33rpm) 1/2" Length

Not sure of the motor shaft size for the hole in the bottom of the spindle.

Hope this helps.

[JayDC]

BTW, the man at the motor shop said the bigger the condenser the more initial torque the motor has on start up, he tried to sell me a new one for $12, I passed, since mine works fine.

This tool looks to be exactly what I need to pull the spindle off the shaft..

http://cgi.ebay.com/3-JAW-SMALL-ENGINE-HAND-GEAR-MOTOR-PULLY-PULLER-TOOL-/290532325144

[cymbalism]

Hey Jay, I was told by Alan once that you can screw a long screw down in the center of the shaft and it will make the spindle come off, just male sure the thread if the same and it shops work just fine

[JayDC]

its too suck on there.. maybe I need a ratchet, and a square bolt..

[JayDC]

today is just not going my way:

Jay,
NYC series bodines have been obsolete since the 1980's or B4.
Any new motor would not fit the old mtg.
Parts for these old designs are not available.
Also, synchronous motors are no longer made.
Sorry we cannot help.
Art Martinelli
Jos. T. Fewkes & Co.