DIYbanter

DIYbanter (https://www.diybanter.com/)
-   Metalworking (https://www.diybanter.com/metalworking/)
-   -   Split phase motor question (https://www.diybanter.com/metalworking/374793-split-phase-motor-question.html)

[email protected] October 7th 14 05:03 PM

Split phase motor question
 
Tim said I should post this here also:
I have an old split phase induction motor that runs quite well.
Especially considering the fact that it is at least 60 years old. But
it makes a funny sound when running but the sound disappears
immediately whe power is removed. It sounds like something is a little
loose. Sorta like if the shaft was oscillating back and forth between
the thrust bearings. But it is not that. My son suggested that maybe
one of the windings is loose and rattles a little back and forth when
the polarity of the AC voltage changes. Anybody got a clue?
Thanks,
Eric

Lloyd E. Sponenburgh[_3_] October 7th 14 09:24 PM

Split phase motor question
 
fired this volley in
:

. Anybody got a clue?


Some laminations are probably loose. They make a buzz at 60Hz, if so.

If it's RPM-related, it actually could be a bearing. Motors do not usually
put exactly uniform torque on one end or the other, and can skew the shaft
enough to make a bad bearing sing.


LLoyd

Hul Tytus October 7th 14 10:32 PM

Split phase motor question
 
Eric - I've a similar sound that started recently - tinny vibration as
though the sheet metal in the start switching mechanism is loose? If you
find an answer, do post it.

Hul

wrote:
Tim said I should post this here also:
I have an old split phase induction motor that runs quite well.
Especially considering the fact that it is at least 60 years old. But
it makes a funny sound when running but the sound disappears
immediately whe power is removed. It sounds like something is a little
loose. Sorta like if the shaft was oscillating back and forth between
the thrust bearings. But it is not that. My son suggested that maybe
one of the windings is loose and rattles a little back and forth when
the polarity of the AC voltage changes. Anybody got a clue?
Thanks,
Eric


[email protected] October 7th 14 10:41 PM

Split phase motor question
 
On Tue, 7 Oct 2014 21:32:29 +0000 (UTC), Hul Tytus
wrote:

Eric - I've a similar sound that started recently - tinny vibration as
though the sheet metal in the start switching mechanism is loose? If you
find an answer, do post it.

Hul


I will post any answers I get.
Eric

wrote:
Tim said I should post this here also:
I have an old split phase induction motor that runs quite well.
Especially considering the fact that it is at least 60 years old. But
it makes a funny sound when running but the sound disappears
immediately whe power is removed. It sounds like something is a little
loose. Sorta like if the shaft was oscillating back and forth between
the thrust bearings. But it is not that. My son suggested that maybe
one of the windings is loose and rattles a little back and forth when
the polarity of the AC voltage changes. Anybody got a clue?
Thanks,
Eric



Hul Tytus October 8th 14 10:38 PM

Split phase motor question
 
Eric - When reading your message I translated "split phase" to "capacitor
start". Some days.

Hul

wrote:
On Tue, 7 Oct 2014 21:32:29 +0000 (UTC), Hul Tytus
wrote:


Eric - I've a similar sound that started recently - tinny vibration as
though the sheet metal in the start switching mechanism is loose? If you
find an answer, do post it.

Hul


I will post any answers I get.
Eric

wrote:
Tim said I should post this here also:
I have an old split phase induction motor that runs quite well.
Especially considering the fact that it is at least 60 years old. But
it makes a funny sound when running but the sound disappears
immediately whe power is removed. It sounds like something is a little
loose. Sorta like if the shaft was oscillating back and forth between
the thrust bearings. But it is not that. My son suggested that maybe
one of the windings is loose and rattles a little back and forth when
the polarity of the AC voltage changes. Anybody got a clue?
Thanks,
Eric



[email protected] October 8th 14 10:55 PM

Split phase motor question
 
On Wednesday, October 8, 2014 5:38:38 PM UTC-4, Hul Tytus wrote:
Eric - When reading your message I translated "split phase" to "capacitor

start". Some days.


60 year old motor? Maybe induction-start induction-run.


All times are GMT +1. The time now is 10:37 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter