Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.


--
posted from
http://www.polytechforum.com/metalwo...-h-582939-.htm
using PolytechForum's Web, RSS and Social Media Interface to
rec.crafts.metalworking and other engineering groups

Phil wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.


This probably means the bearings are shot. It is probably not
real easy to take apart. You may need an arbor press and
some pushing rings to get the bearings off and new ones on.

Jon

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

How old is it? Ive got a pair of Hunters in the house that are at
least 20 yrs old, and have run virtually 24/7 for those 20 yrs..and
still dont wobble.

Might be time to replace it if yours is "wobbling"



"In the United States "liberal" means today a set of ideas and political postulates
that in every regard are the opposite of all that liberalism meant to the preceding generations.
The American self-styled liberal aims at government omnipotence, is a resolute foe of free enterprise,
and advocates all-round planning by the authorities, i.e., socialism." -- Ludwig von Mises (1929)

Low speed , it is quiet, higher speed , rattles, I balanced the
wobble out of it years ago, have a 18" down shaft on the fan, checked
the blades, pushed up and down on the fan blades, arms, in the
center of the motor and have the play there.

There should be some axial play. Those are simple thrust bearings.
"Rattles" don't come from axial play, unless it runs so fast it lifts the
fan up by aerodynamic force (not likely).

Even the cheap Hampton Bay fans from Home Despots run nearly forever, if
they're balanced. (with the exception that if you regularly smoke or cook
near the fan, the bearings may get gummed; and if so, solvent cleaning
and re-lubing will fix that).

If you've got a rattle, it's almost a sure bet that 1) the fan is still
slightly out of balance, even if you don't see the wobble, and 2) that
some escutcheon bell or plate is jiggling around slightly loose. Those
are about the only parts that would make a true rattling sound. You
would perceive a 'rattle' in the main spindle as a lower-toned knocking.

Lloyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

There should be some axial play. Those are simple thrust bearings.
"Rattles" don't come from axial play, unless it runs so fast it lifts
the fan up by aerodynamic force (not likely).


BTW... if that's what causing it, try reversing the fan. If it does NOT
rattle in that direction, that's the likely cause. In that case, clean the
bearings and add a spacer washer. They usually come apart very easily,
generally with a keeper nut or external retainer rings.

Lloyd

RE-balance it again. It is likely dirty and out of balance. Or
the balance moved over time. Oil can make some glues soft.

I've known fans that were on 12 foot extensions that were wood and
didn't wobble. I wanted them - old school designs for colleges. They
were junked and air condition was put in. Just as I stopped going to
that building. Such is life.

Martin

On 8/31/2013 10:19 AM, Phil wrote:
Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

--
It is common sense to take a method and try it. If it fails,
admit it frankly and try another. But above all, try something.
-- Franklin D. Roosevelt

On 2013-08-31, Phil wrote:
Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

How old a Hunter? We have both a more modern one which has an
electronic module to control the fan speed, and no obvious way to lube
it (sealed bearings, I suspect), and two older ones, which have a
reservoir for oil around the shaft inside the main housing. That would
have to be re-lubed by a pump oiler through the slots at the top. It is
unlikely to have gone low enough to really need refilling -- unless it
has been removed from the ceiling, allowed to tilt, and then replaced
later without replacing the spilled oil.

One of the two older ones has a buzz, and it is traced to two
things:

1) Chain for controlling the speed switch hanging down and
vibrating against the globe of the light assembly on the bottom.

2) Imprecise tightening of the four thumbscrews which lock the
white opal glass globe into the hub. At one time, I put a big
rubber band in the globe's groove, which worked until the rubber
gave up (as rubber bands tend to do). To do it right, I would
want to fill the groove with RTV and keep it rotating until the
RTV set -- and use that to avoid the screws vibrating against
the glass globe. (Obviously, if you don't have the light
assembly, this does not apply.

Take off the globe, and it is quiet enough. It is probably from
about 1978 or so, at a guess.

That one has about a 1/8" vertical play (by feel, not
measurement, and I consider this play *normal* for this kind of
motor. The weight of the rotor assembly (it is an inverted
rotor style motor -- part of why it can go so slow), the hub,
and the blades hold it quite firmly at the bottom of that play.


Balancing the blades works to minimize the swing of the whole
pendulum assembly, but should not have anything to do with the buzz,
though if the wood of the blades has shrunk, so the screws attaching the
blades to the hub arms are a bit loose, that *might* be a place where
the buzz could appear.

The buzz comes from the varying torque of the motor rotating the
upper shaft in its rubber hanging assembly. The torque is greater at
higher speeds. (And if the rubber bushing in the hanger has
deteriorated, you might have some buzzing from there, too.

Good Luck,
DoN.

--
Remove oil spill source from e-mail
Email: | (KV4PH) Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

On Sat, 31 Aug 2013 20:19:10 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
m wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

Or when you and the misses play Strip Club and her garments get hung
up in the ceiling fan....been there...ah...never mind

Gunner, hands in his pockets.... walking away whistling........
"The socialist movement takes great pains to circulate frequently new labels for its ideally constructed state.
Each worn-out label is replaced by another which raises hopes of an ultimate solution of the insoluble basic
problem of Socialism, until it becomes obvious that nothing has been changed but the name.
The most recent slogan is "State Capitalism."[Fascism] It is not commonly realized that this covers nothing more
than what used to be called Planned Economy and State Socialism, and that State Capitalism, Planned Economy,
and State Socialism diverge only in non-essentials from the "classic" ideal of egalitarian Socialism. - Ludwig von Mises (1922)

On Sat, 31 Aug 2013 22:30:41 -0700, Gunner Asch
wrote:

On Sat, 31 Aug 2013 20:19:10 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
om wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

Or when you and the misses play Strip Club and her garments get hung
up in the ceiling fan....been there...ah...never mind

I've never had a strong enough ceiling fan over my bed with which to
play "Spin the Petite Girl", but I've fondly thought of it often.


Gunner, hands in his pockets.... walking away whistling........

Whistlin' and grinnin', I'll bet.

--
It is common sense to take a method and try it. If it fails,
admit it frankly and try another. But above all, try something.
-- Franklin D. Roosevelt

On Sun, 01 Sep 2013 06:27:12 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 22:30:41 -0700, Gunner Asch
wrote:

On Sat, 31 Aug 2013 20:19:10 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
0f8503901d844703eea1acecb7a4938a_1564@example. com wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

Or when you and the misses play Strip Club and her garments get hung
up in the ceiling fan....been there...ah...never mind

I've never had a strong enough ceiling fan over my bed with which to
play "Spin the Petite Girl", but I've fondly thought of it often.


Gunner, hands in his pockets.... walking away whistling........

Whistlin' and grinnin', I'll bet.

A friend of mine actually rigged up a slow motion rotator rigged to a
beefed up ceiling . In his "den". Its used with a modified bosons
seat. Some ladies love it..others...shrug. It rotates and lifts and
falls via a rather ingenious remote control system. And several
servos. About as complex as a RC airplane..but upsized to handle a
significant dynamic...very dynamic ... weight of at least 400 lbs.

I rather doubt the engineers at Yaskawa had any idea of this
application for their servo amps....chuckle

He is quite a technical freak and has a Sybian and a St Charles Cross
and all manner of other interesting gadgets. I had to fix the Sybians
wiring for him at a party one night. . Seems one of the ladies had
ripped off the remote control during a moment or a dozen (or more)
moments of passion.

Of course all the ladies here had to try it out. Now I have a
blanket request for one..but **** they are expensive!!! I may have to
build one.

When he learned that I have a well equipped but modest machine
shop...we have done a number of projects that have gotten some rave
reviews.. and some squeeky requests for redesign...shrug.

I think he copies stuff from here....

http://www.****ingmachines.com/site/?c=1

View at your own psychic risk.....

Oh..if making up a Milwaukee Sawzall into a sex toy...advise the lady
to use it with caution. One local gal ruptured her cervix with one
while out in the ozone..... Its rare..but possible.

Shrug.




"The socialist movement takes great pains to circulate frequently new labels for its ideally constructed state.
Each worn-out label is replaced by another which raises hopes of an ultimate solution of the insoluble basic
problem of Socialism, until it becomes obvious that nothing has been changed but the name.
The most recent slogan is "State Capitalism."[Fascism] It is not commonly realized that this covers nothing more
than what used to be called Planned Economy and State Socialism, and that State Capitalism, Planned Economy,
and State Socialism diverge only in non-essentials from the "classic" ideal of egalitarian Socialism. - Ludwig von Mises (1922)

On Sun, 01 Sep 2013 16:04:56 -0700, Gunner Asch
wrote:


I think he copies stuff from here....

http://www.****ingmachines.com/site/?c=1

View at your own psychic risk.....

Sorry...proper link

http://www.****ingmachines.com/site/fm/machines/


"The socialist movement takes great pains to circulate frequently new labels for its ideally constructed state.
Each worn-out label is replaced by another which raises hopes of an ultimate solution of the insoluble basic
problem of Socialism, until it becomes obvious that nothing has been changed but the name.
The most recent slogan is "State Capitalism."[Fascism] It is not commonly realized that this covers nothing more
than what used to be called Planned Economy and State Socialism, and that State Capitalism, Planned Economy,
and State Socialism diverge only in non-essentials from the "classic" ideal of egalitarian Socialism. - Ludwig von Mises (1922)

On Sun, 01 Sep 2013 22:57:45 -0700, Gunner Asch
wrote:

On Sun, 01 Sep 2013 20:48:15 -0700, Larry Jaques
wrote:

On Sun, 01 Sep 2013 16:04:56 -0700, Gunner Asch
wrote:

On Sun, 01 Sep 2013 06:27:12 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 22:30:41 -0700, Gunner Asch
wrote:

On Sat, 31 Aug 2013 20:19:10 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
0f8503901d844703eea1acecb7a4938a_1564@examp le.com wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

Or when you and the misses play Strip Club and her garments get hung
up in the ceiling fan....been there...ah...never mind

I've never had a strong enough ceiling fan over my bed with which to
play "Spin the Petite Girl", but I've fondly thought of it often.


Gunner, hands in his pockets.... walking away whistling........

Whistlin' and grinnin', I'll bet.

A friend of mine actually rigged up a slow motion rotator rigged to a
beefed up ceiling . In his "den". Its used with a modified bosons
seat. Some ladies love it..others...shrug. It rotates and lifts and
falls via a rather ingenious remote control system. And several
servos. About as complex as a RC airplane..but upsized to handle a

Pretty cool.


significant dynamic...very dynamic ... weight of at least 400 lbs.

I can't imagine entertaining a 200# lady friend, let alone 400. Ick!

Dynamic load. A 110lb sweety bouncing hard! can provide 400 lbs of

Grok that.


stress. Id NOT ever want to see anyone over 180 on that swing...the
wobbeling and jiggeling and the waves of floppy tissue oozing
around...grim dude..really really grim.

My thoughts exactly.


I rather doubt the engineers at Yaskawa had any idea of this
application for their servo amps....chuckle

He is quite a technical freak and has a Sybian and a St Charles Cross
and all manner of other interesting gadgets. I had to fix the Sybians
wiring for him at a party one night. . Seems one of the ladies had
ripped off the remote control during a moment or a dozen (or more)
moments of passion.

Of course all the ladies here had to try it out. Now I have a
blanket request for one..but **** they are expensive!!! I may have to
build one.

Where would you keep it? No room in your zoo right now, wot?
(condolences, BTW)

Sybians? They are small enough to keep in the bottom of the closet.

No, the zoo (your extended family living there) would preclude you
from having the space or privacy to utilize the toys with your new
friends.


--
It is common sense to take a method and try it. If it fails,
admit it frankly and try another. But above all, try something.
-- Franklin D. Roosevelt

On Mon, 02 Sep 2013 07:22:54 -0700, Larry Jaques
wrote:

On Sun, 01 Sep 2013 22:57:45 -0700, Gunner Asch
wrote:

On Sun, 01 Sep 2013 20:48:15 -0700, Larry Jaques
wrote:

On Sun, 01 Sep 2013 16:04:56 -0700, Gunner Asch
wrote:

On Sun, 01 Sep 2013 06:27:12 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 22:30:41 -0700, Gunner Asch
wrote:

On Sat, 31 Aug 2013 20:19:10 -0700, Larry Jaques
wrote:

On Sat, 31 Aug 2013 15:19:03 +0000, Phil
0f8503901d844703eea1acecb7a4938a_1564@exam ple.com wrote:

Low speed , it is quiet, higher speed , rattles, I balanced the wobble
out of it years ago, have a 18" down shaft on the fan, checked the blades,
pushed up and down on the fan blades, arms, in the center of the motor
and have the play there.

Axial play shouldn't cause rattle. Even on high, the shaft/blade assy
shouldn't create enough lift to bob up and down.

Check for bent blade arms. If one is at a different height or angle,
it will cause problems at higher RPMs. Have you tried rebalancing it
lately? Self-adhesive lead weights have a habit of flying off when
you're not looking, or when being dusted. DAMHIKT.

Or when you and the misses play Strip Club and her garments get hung
up in the ceiling fan....been there...ah...never mind

I've never had a strong enough ceiling fan over my bed with which to
play "Spin the Petite Girl", but I've fondly thought of it often.


Gunner, hands in his pockets.... walking away whistling........

Whistlin' and grinnin', I'll bet.

A friend of mine actually rigged up a slow motion rotator rigged to a
beefed up ceiling . In his "den". Its used with a modified bosons
seat. Some ladies love it..others...shrug. It rotates and lifts and
falls via a rather ingenious remote control system. And several
servos. About as complex as a RC airplane..but upsized to handle a

Pretty cool.


significant dynamic...very dynamic ... weight of at least 400 lbs.

I can't imagine entertaining a 200# lady friend, let alone 400. Ick!

Dynamic load. A 110lb sweety bouncing hard! can provide 400 lbs of

Grok that.


stress. Id NOT ever want to see anyone over 180 on that swing...the
wobbeling and jiggeling and the waves of floppy tissue oozing
around...grim dude..really really grim.

My thoughts exactly.


I rather doubt the engineers at Yaskawa had any idea of this
application for their servo amps....chuckle

He is quite a technical freak and has a Sybian and a St Charles Cross
and all manner of other interesting gadgets. I had to fix the Sybians
wiring for him at a party one night. . Seems one of the ladies had
ripped off the remote control during a moment or a dozen (or more)
moments of passion.

Of course all the ladies here had to try it out. Now I have a
blanket request for one..but **** they are expensive!!! I may have to
build one.

Where would you keep it? No room in your zoo right now, wot?
(condolences, BTW)

Sybians? They are small enough to keep in the bottom of the closet.

No, the zoo (your extended family living there) would preclude you
from having the space or privacy to utilize the toys with your new
friends.

Oh we never play with others at home.


"The socialist movement takes great pains to circulate frequently new labels for its ideally constructed state.
Each worn-out label is replaced by another which raises hopes of an ultimate solution of the insoluble basic
problem of Socialism, until it becomes obvious that nothing has been changed but the name.
The most recent slogan is "State Capitalism."[Fascism] It is not commonly realized that this covers nothing more
than what used to be called Planned Economy and State Socialism, and that State Capitalism, Planned Economy,
and State Socialism diverge only in non-essentials from the "classic" ideal of egalitarian Socialism. - Ludwig von Mises (1922)