My guess is that some or most of the coils of the particular winding for the medium speed had shorted or burned out. There was enough magnetic field to disturb metal in the area or to maintain a little movement once inertia and momentum were overcome for a time at least.
I have a big industrial type ceiling fan I used to have installed in an office once to drive the overhead heat supply down to where we people lived. Well it operated for many years from one of those variable speed varactors I think they are called, a dimmer switch but eventually the draw has caused enough of the windings to fail that the top speed is only a few RPM and it hums like an entire choir that has forgotten the words. I would dearly love to find another which would operate from a dimmer for the infinitely variable characteristics but they seem to be unavailable. Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. ----- Original Message ----- From: "Jay Williams" <[EMAIL PROTECTED]> To: <blindhandyman@yahoogroups.com> Sent: Wednesday, August 16, 2006 9:57 AM Subject: Re: [BlindHandyMan] Fan maintenance > That sounds more like dirty contacts on the switch that selects speed. > Unless the fan is intended to run off other power sources than house > mains, > there's no transformer or other electronics. > Jay > ----- Original Message ----- > From: "Dan Rossi" <[EMAIL PROTECTED]> > To: <blindhandyman@yahoogroups.com> > Sent: Wednesday, August 16, 2006 8:47 AM > Subject: Re: [BlindHandyMan] Fan maintenance > > >> Just out of curiosity, can Max or Tom shed a bit more light on the fan >> subject? I wonder if it is not something electronic and not just >> mechanical, such as burned out coils on the transformer or something like >> that. >> >> I also had a big box fan that I ran every night for white noise. I ran >> it >> on medium speed for years. After a long time, if I turned the fan on >> medium it would not start turning. I could possibly feel a bit of >> vibration like it might sort of been trying to turn, but it just wouldn't >> get started. However, if I turned it on low or high, it worked just >> fine. >> If I turned it on high, let it get started, then turned it to medium, >> sometimes it would stay going, but more often than not it would just slow >> to a stop. >> >> Later. >> >> -- >> Blue skies. >> Dan Rossi >> Carnegie Mellon University. >> E-Mail: [EMAIL PROTECTED] >> Tel: (412) 268-9081 >> >> >> To listen to the show archives go to link >> http://acbradio.org/handyman.html >> or >> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >> >> The Pod Cast address for the Blind Handy Man Show is. >> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >> >> The Pod Cast address for the Cooking In The Dark Show is. >> http://www.gcast.com/u/cookingindark/main.xml >> >> Visit The New Blind Handy Man Files Page To Review Contributions From > Various List Members At The Following Address: >> http://www.jaws-users.com/handyman/ >> Visit the new archives page at the following address >> http://www.mail-archive.com/blindhandyman@yahoogroups.com/ >> For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: >> [EMAIL PROTECTED] >> Yahoo! Groups Links >> >> >> >> >> >> >> >> > > > > > To listen to the show archives go to link > http://acbradio.org/handyman.html > or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > The Pod Cast address for the Cooking In The Dark Show is. > http://www.gcast.com/u/cookingindark/main.xml > > Visit The New Blind Handy Man Files Page To Review Contributions From > Various List Members At The Following Address: > http://www.jaws-users.com/handyman/ > Visit the new archives page at the following address > http://www.mail-archive.com/blindhandyman@yahoogroups.com/ > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.405 / Virus Database: 268.10.9/417 - Release Date: 11/08/2006 > > To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The New Blind Handy Man Files Page To Review Contributions From Various List Members At The Following Address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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