fading away

This is the place for any magazine-related discussions that don't fit in any of the column discussion boards below.
User avatar
dacflyer
Posts: 4552
Joined: Fri Feb 08, 2002 1:01 am
Location: USA / North Carolina / Fayetteville
Contact:

Re: fading away

Post by dacflyer » Mon Apr 20, 2020 6:36 am

I'm curious on what you find out..

User avatar
Joseph
Posts: 681
Joined: Mon Dec 10, 2001 1:01 am
Location: USA,World
Contact:

Re: fading away

Post by Joseph » Mon Apr 20, 2020 4:02 pm

I'd still like to check it out some more, but I'm leaning toward the idea that it's worn sleve bearings in the motor. I've noticed such squealing happen in other things in the past, especially in fans. The fan in an old dehumidifier I was using had that problem intermittently, but eventually it became too bad, and would happen all the time. The weight of the fan blade, being metal might have tended to dampen the shaft at first, until the play in the shaft became too great. We had an old window fan with a metal blade that seemed to go through the problem similarly.

The resistance to wear of shafts and bearings in more modern motors are better, I think.

User avatar
Lenp
Posts: 1456
Joined: Thu Oct 26, 2006 8:11 pm
Location: Maryland
Contact:

Re: fading away

Post by Lenp » Mon Apr 20, 2020 4:21 pm

Consider that the pitch of the noise is likely related to the speed of the culprit.
Since the motor runs faster than the drive mechanism it's squeal is likely to be a higher pitch!
All senses are needed for troubleshooting!
Len

“To invent, you need a good imagination and a big pile of junk.” (T. Edison)
"I must be on the way to success since I already have the junk". (Me)

User avatar
Joseph
Posts: 681
Joined: Mon Dec 10, 2001 1:01 am
Location: USA,World
Contact:

Re: fading away

Post by Joseph » Mon Apr 20, 2020 8:34 pm

That's a good thought!

gerty
Posts: 308
Joined: Mon Dec 06, 2004 1:01 am
Location: Tennessee
Contact:

Re: fading away

Post by gerty » Wed Apr 29, 2020 1:49 am

You can pull the emergency release handle (for opening door when power is off). Running the motor back and forth without the door might help in your diagnosis ..

User avatar
Joseph
Posts: 681
Joined: Mon Dec 10, 2001 1:01 am
Location: USA,World
Contact:

Re: fading away

Post by Joseph » Wed Apr 29, 2020 8:36 am

That's a good idea. I tried that and determined that the noise level of just the motor unit running was okay. That led me to the thought that the squealing noise comes from long threaded rod squealing against the long sleeve it's in. I'm thinking of applying a new coating of grease to the threaded rod.

User avatar
Lenp
Posts: 1456
Joined: Thu Oct 26, 2006 8:11 pm
Location: Maryland
Contact:

Re: fading away

Post by Lenp » Wed May 13, 2020 6:17 am

Or..maybe the generic door rollers would benefit from a drop or two of mother earth's elixer🤔
Len

“To invent, you need a good imagination and a big pile of junk.” (T. Edison)
"I must be on the way to success since I already have the junk". (Me)

User avatar
CeaSaR
Posts: 1760
Joined: Sat Nov 08, 2003 1:01 am
Location: Phoenixville, PA USA
Contact:

Re: fading away

Post by CeaSaR » Wed May 13, 2020 9:54 am

Lenp wrote:
Wed May 13, 2020 6:17 am
Or..maybe the generic door rollers would benefit from a drop or two of mother earth's elixer🤔
Dinosaur's Dynamic De-frictioning Drops?
Hey, what do I know?

User avatar
Joseph
Posts: 681
Joined: Mon Dec 10, 2001 1:01 am
Location: USA,World
Contact:

Re: fading away

Post by Joseph » Wed May 13, 2020 12:48 pm

The good ole 3-in-one.

User avatar
Joseph
Posts: 681
Joined: Mon Dec 10, 2001 1:01 am
Location: USA,World
Contact:

Re: fading away

Post by Joseph » Fri May 29, 2020 5:01 am

dacflyer wrote:
Mon Apr 20, 2020 6:36 am
I'm curious on what you find out..
So far the application of grease to the long threaded rod seems to have solved the problem. decided to go with synthetic grease supplied by the first well-known supplier of synthetic oil for the consumer market way back when.

User avatar
haklesup
Posts: 3040
Joined: Thu Aug 01, 2002 1:01 am
Location: San Jose CA
Contact:

Re: fading away

Post by haklesup » Tue Jun 09, 2020 4:28 pm

I went away for a few months and there was plenty of new posts today :) I'm actually busier during the shutdown trying to work at home and be interrupted by kids frequently. Today I am finally back in the office, so peaceful

Post Reply

Who is online

Users browsing this forum: No registered users and 32 guests