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
Split phase motor question
Oct 07, 2014
5 Replies
snipped-for-privacy@whidbey.com fired this volley in news: snipped-for-privacy@4ax.com:
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
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
snipped-for-privacy@whidbey.com wrote:
I will post any answers I get. Eric
Eric - When reading your message I translated "split phase" to "capacitor start". Some days.
Hul
snipped-for-privacy@whidbey.com wrote:
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
60 year old motor? Maybe induction-start induction-run.
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required