On Mon, 29 Jul 2013 11:08:59 -0700 (PDT), heathcliff
I know exactly what you mean about the noise. Almost any fan, when
run slow enough, will be totally quiet.
I don't know if a resistor would work, and rather than get into the
possible problems, fire and everything, I'd recommend
either a) getting a fan speed control and finding a box to mount it
in, For the most part, the only fan speed controls I've ever found
were the kind that fills the same size box that a wall switch or
receptacle goes into. Pretty big. I did once come across, at an
electronics flea market maybe, one about the size of a brownie, but I
couldn't find a box the right size and ended up putting it one that
was the right width and depth, but was 4 inches high.
Hmmm, http://www.ebay.com/bhp/ac-motor-speed-contro The first one has
a case and a cord l Not real attractive, but still.
The second one I've never seen before. Only $6.50. I may switch to
this if I ever need a sixth control.
The two near the bottom are nice too
has its own plastic box
They didn't have any of this stuff 15 years ago, I think.
Or b) getting a light dimmer, which usually comes already in a box and
which also usually has a cord with a combination plug/receptacle, that
you can plug the light [or fan] into and plug all of that into the
Whenever I recommend this, I'm certain to get criticism about how
light dimmers won't work with motors, and they are correct that they
are not designed for the purpose, and once in a while I find a dimmer
that will not work with a fan (probably it's the fan that is different
from other fans, and less likely that the dimmer won't work with any
fan.) but I have 30 years experience here, with about 12 fans and 3 or
4 different kinds of dimmer, and I think only one fan, at most two,
would not work with the light dimmer I tried it with. None have
shown RF interference with the radio or tv.
But you should never turn the speed down so low that the fan stops
spinning. There were probably still be some current running through
the fan motor, and if the energy in the current doesn't get turned
into motion, it will be turned entirely into heat, with the
possibility of a fire. (Although I seem to recall that I did test
one combination, by turning the speed down just enough until it
stopped, and letting it sit where it was always within my view for a
30 minutes and feeling the fan to see how hot it was. And it was
only a trifle warm, so I probably decided it couldn't get too hot.
But still there is no point to turning the speed down so it doesn't
turn, when it's just as easy to turn the fan off.
I only use the AC about 10 days a year, fewer now that it has broken,
so I have a fan in almost every room, even in the basement (which
never gets that hot but on humid days, the fan feels good), and when
the house is warm, I use them every day.
In the bedroom I had a small table fan, and sometimes it would get too
cold at night, as it cooled off but the fan was still on. So I took
a thermostat from a burned-out big box fan, mounted it in a big
plastic cap from a large aerosol can, and wired that into fan wiring
so the fan turns off completely if it gets colder than where I set it
while I'm sleeping.
The dimmer I use the most they sold for maybe 20 years or more, but
they don't seem to sell it, at least not in the same case now.
It is like this one
(Amazon.com product link shortened)75127449&sr=8-4&keywords=tabletop+lamp+dimmer
except the control box has square corners, is brown plastic, with a
center plate that is brown metal, and a knob that slides up and down.
(Perhaps a little better than a round knob when doing this in the
dark) The only way to tell if newer dimmers work as well is to test
one. This new one has the on/off switch built in, so that is very
good, especially since it's not at the end of travel of a knob. You
can turn off the fan without changing the speed, it seems clear.
When the dimmer didnn't work with the fan, I mean that the fan didn't
spin at all no matter what setting the dimmer was on. But the dimmer
did work with other fans.
If the fan spun at all, everything else was fine, IME.
Dang, I forgot all about the dimmer already built on to the cord. The
only thing I don't know about them is whether or not they use a triac.
Perhaps one made to dim LED lamps would work better but those may use
SCR's instead of triacs. I'm so use to building things I forgot about
the ready made dimmers on a cord. O_o
On Mon, 29 Jul 2013 22:26:19 -0500, The Daring Dufas
LOL. This reminds me of when I wanted to build a lid for lidless
frypan, but you all convinced me to buy one meant for another pan or
pot. (I had to go to 8 thrift shops, but it took only about 5 minutes
each and was a lotl easier than making one.)
On Mon, 29 Jul 2013 16:56:10 -0400, "David L. Martel"
A lof of fan noise is not caused by out-of-balance fans but by the air
which is moving because of the fan. No matter how good the bearings
or how well balanced the blades, if there is too much air moving, one
can hear that. Many people may not mind or even notice, since it's
the essense of a fan to move air, but I sure mind. Maybe that's what
is bothering Heathcliff too.
(My last 3 Chrysler LeBarons had 4 speed fans, and I almost always
kept the speed on 2, almost the slowest, because that was the fastest
speed I could not hear. After 23 years with LeBarons, I bought a
Toyota Solara, which has 5 fan speeds. Sounds better, but only the
lowest speed is silent. But the lowest speed moves less air than
speed 2 (and maybe even speed 1) of the LeBaron. So I'm forced to
use speed 2 and put up with the noise.
(One of twenty reasons so far that the Chryslers (and the GM cars)
were better than the Toyota.)
I have an 89 full sized Dodge van that's older than the girls I chase.
The poor old guy makes all kinds of noise. I'm looking for a vehicle
manufactured in this century like a small SUV and I'll keep the old van
since it carries a lot of stuff and has a ladder rack. ^_^
On Mon, 29 Jul 2013 22:30:41 -0500, The Daring Dufas
When I was in college my 80-year old cousin gave me his '50 Olds, in
1968, I noticed a similar car and left a note trying to buy his
back-up lights. He wouldn't sell but we became friends. He was 30 or
35 and would drive his '50 olds around campus, saying he thought the
college girls might find the car interesting. I'm sure none did, but
I didnt' tell the guy since it seemed to be his whole social life.
He had two models of the 50 Olds, or a 50 and 51, and he had a whole
townhouse stuffed full of electronic parts, etc. on the first floor at
least, that he bought in bulk at auctions. He lived somewhere else.
Later, when my brother went to Viet Nam, he gave me his '65 Pontiac
Catalina convertible, and when I left town 18 months after that, I
couldn't take both. I didn't want to but I gave my Olds to my friend,
so he had three!
Man I wish I still had my 1981 Dodge Aries station wagon. It was a neat
little car with bucket seats and four on the floor which was unusual for
those funky little cars especially in a wagon. I got the roller cam from
a later model 2.2L engine and it bolted right in and improved
performance but the other thing that really helped was getting the
clutch and flywheel off a turbo version of the 2.2L engine and it was
a direct bolt in too. The friction surface and disk took up the whole
flywheel which gave me the ability to lite up the front tires without
any clutch slippage. Darn, I wish I still had the little critter. ^_^
For "Small SUV" I don't think anyone will ever top the Jeep Cherokee or
early Grand Cherokee... everything since has either been too big or not
It'll be a sad day when mine dies but I'm hoping to postpone that day as
long as possible.
replace "roosters" with "cox" to reply.
Yea, I was thinking about an older Jeep Cherokee with the straight 6 in
it because I loved my Slant Sixes in my Mopars. I even built a 170cid
Slant Six with a 3/4 race cam. It was a real hoot to wind that little
sucker up but I kept blowing the stock muffler off of it at high rpm. ^_^
Not the same thing... the old slant six was a MoPar design, the Jeep six
was based on a similarly ancient and dead nuts reliable AMC design. I
have owned both and like both but the later "high output" 4.0 Jeep
engine is way stronger than a 225 slant six. Actually have to watch
your right foot when it's damp out and you're in 2WD :)
replace "roosters" with "cox" to reply.
Heck, I'm very aware of the differences, I wrote straight 6 in the Jeep,
not Slant Six. My dad owned a 51 Dodge sedan that had the old
L-head six which Chrysler continued to manufacture as an industrial
engine long after they stopped using it in cars and trucks. I know a
tiny little bit about engines, I've rebuilt a variety of them and my
favorite Ford engine is the 300cid straight six. I think it was used in
a lot of UPS trucks at one time or so I heard. I'm really looking for a
"small" SUV with a four banger but I tried to get into a Honda and as
usual, I cracked my fracking head open on the door frame. ^_^
Keep in mind that the airflow has to keep the fan motor cool enough as
well; restricting the airflow may allow the motor to overheat.
AND some kinds of electric motor (I don't recall which) overheat when
run on a reduced voltage, so the resistor or dimmer suggestions made
earlier may not be a good idea either.
The real solution would be to get a quieter fan, as a resistor in series
with the low speed will draw just as much power as the low speed does
now, and shed all its heat into the airflow going into your house.
I know, that's not the DIY way, but it's the truth...
If you really, really don't want to do that for whatever reason, I would
remove the 3-speed switch, wire everything up so the fan runs on its
FASTEST speed, and get a triac based motor speed control so your fan now
has infinitely variable speed.
replace "roosters" with "cox" to reply.
Not a bad idea, except there's no need to remove the 3-speed switch.
He can just set it to the highest speed. Then, if he or the next
user ever stops using the speed control, he'll still have a 3-speed
However, my experience is that sometimes it's better to use the
external speed control with the lowest speed. Frankly, I forget
why, but it might have been this: Say the knob and the rheostat is
such that one can set the control to any one of 200 physical
positions. If the fan has natural speeds of 400, 800, and 1200,
then at the low setting, one can control the speed in increments of 2,
(2 x 200 = 400) but at the highest speed setting, he can only control
the speed in increments of 6. If he's going to use a speed below 400
anyhow, he'll have more control over the speed when the fan is set at
400. (I'm not saying 400 or 1200 what, revolutions per something or
other. I don't know what actual speeds these fans run at.)
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