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#1
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Singing Fan
I have a small window fan in my workshop. It's one of those old metal
expandable units that fits any width of window by moving the sides. The fan blade is only about 9 or 10 inches. The motor is a shaded pole motor, similar to the motors used in the old record turntables. But this fan sings. It stays at a constant speed, but the tone varies. It can be heard 300 feet away. It's not a grinding sound and the blade is not rubbing the housing. It's just purrs along, while changing in pitch. Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. At first it was sort of annoying, but after awhile I have grown to like the sound. Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. The bearings are all pretty tight. I oiled it's bearings well and reassembled it. I was surprised that it was much quieter for the first ten minutes. Then it went back to singing. Just curious if anyone knows why it makes these sounds? |
#2
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Singing Fan
It's probably got some roughness, in the bearings. What kind of oil did you
use? Should use ND-20. After complete cleaning, of course. Need to flush out the old oil with solvent. Christopher A. Young Learn more about Jesus www.lds.org .. wrote in message ... I have a small window fan in my workshop. It's one of those old metal expandable units that fits any width of window by moving the sides. The fan blade is only about 9 or 10 inches. The motor is a shaded pole motor, similar to the motors used in the old record turntables. But this fan sings. It stays at a constant speed, but the tone varies. It can be heard 300 feet away. It's not a grinding sound and the blade is not rubbing the housing. It's just purrs along, while changing in pitch. Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. At first it was sort of annoying, but after awhile I have grown to like the sound. Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. The bearings are all pretty tight. I oiled it's bearings well and reassembled it. I was surprised that it was much quieter for the first ten minutes. Then it went back to singing. Just curious if anyone knows why it makes these sounds? |
#3
Posted to alt.home.repair
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Singing Fan
When a motor hums, it doesn't know the words.
What song does your fan sing? Christopher A. Young Learn more about Jesus www.lds.org .. wrote in message ... I have a small window fan in my workshop. It's one of those old metal expandable units that fits any width of window by moving the sides. The fan blade is only about 9 or 10 inches. The motor is a shaded pole motor, similar to the motors used in the old record turntables. But this fan sings. It stays at a constant speed, but the tone varies. It can be heard 300 feet away. It's not a grinding sound and the blade is not rubbing the housing. It's just purrs along, while changing in pitch. Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. At first it was sort of annoying, but after awhile I have grown to like the sound. Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. The bearings are all pretty tight. I oiled it's bearings well and reassembled it. I was surprised that it was much quieter for the first ten minutes. Then it went back to singing. Just curious if anyone knows why it makes these sounds? |
#4
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Singing Fan
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#6
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Singing Fan
Plenty of spelling Nazis to be careful of.
Christopher A. Young Learn more about Jesus www.lds.org .. "jeff_wisnia" wrote in message ... Could the pitch be changing because of varying wind pressure against the window the fan is mounted in. (I just love that nowadays I can end a sentence with a preposition and nobody cares that I do.) Jeff -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10e12 furlongs per fortnight. |
#7
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Singing Fan
On Jul 3, 6:58*am, wrote:
I have a small window fan in my workshop. *It's one of those old metal expandable units that fits any width of window by moving the sides. *The fan blade is only about 9 or 10 inches. *The motor is a shaded pole motor, similar to the motors used in the old record turntables. *But this fan sings. *It stays at a constant speed, but the tone varies. *It can be heard 300 feet away. *It's not a grinding sound and the blade is not rubbing the housing. *It's just purrs along, while changing in pitch. *Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. *At first it was sort of annoying, but after awhile I have grown to like the sound. *Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. *The bearings are all pretty tight. *I oiled it's bearings well and reassembled it. *I was surprised that it was much quieter for the first ten minutes. *Then it went back to singing. Just curious if anyone knows why it makes these sounds? Maybe the bearings still does not have enough oil. Also, the bearings are mounted in spring-finger type of arrangement in many motors, if the bearings are too tight, the entire bearing may be rotating in the spring-finger mounts. |
#8
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Singing Fan
On Tue, 03 Jul 2012 12:18:41 -0400, jeff_wisnia
wrote: wrote: I have a small window fan in my workshop. It's one of those old metal expandable units that fits any width of window by moving the sides. The fan blade is only about 9 or 10 inches. The motor is a shaded pole motor, similar to the motors used in the old record turntables. But this fan sings. It stays at a constant speed, but the tone varies. It can be heard 300 feet away. It's not a grinding sound and the blade is not rubbing the housing. It's just purrs along, while changing in pitch. Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. At first it was sort of annoying, but after awhile I have grown to like the sound. Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. The bearings are all pretty tight. I oiled it's bearings well and reassembled it. I was surprised that it was much quieter for the first ten minutes. Then it went back to singing. Just curious if anyone knows why it makes these sounds? Could the pitch be changing because of varying wind pressure against the window the fan is mounted in. That was actually my first thoughts. However, we have had days of calm wind free weather. It does not seem to indicate that the wind (or lack of it) has any effect. For the heck of it, I placed another fan on the work bench in there and blew that fan toward the noisy one. There was little noticable change. However, I found that there is a certain amound of back and forth play in the motor. What I mean, is that the fan blade can be moved forward (away from the motor, or backward (toward it). This play is very small, but it exists. What causes this is beyond me, but I suspect that there may have been a fiber washer in there when it was new, and that wore out. This play is not visible when it's spinning, but I suspect that the in and out movement of the shaft is causing the different pitch. Putting a shim in it might be possible. I'll have to check what is available. Yet it seems to me that this type of motor always had a little play. After all, if they are too tight, they would drag and overheat. After all, this is a fractional HP motor. My guess would be 1/20 HP at most. No, there are no capacitors. Like I said, this is about the same as the old record player motors. Basically a laminated iron housing with coils and the rotating magnets in the middle connected to the shaft. (similar to this). http://www.cprmotor.com/products_img...motor_yj58.jpg |
#9
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Singing Fan
On Jul 4, 3:28*am, wrote:
On Tue, 03 Jul 2012 12:18:41 -0400, jeff_wisnia wrote: wrote: I have a small window fan in my workshop. *It's one of those old metal expandable units that fits any width of window by moving the sides. *The fan blade is only about 9 or 10 inches. *The motor is a shaded pole motor, similar to the motors used in the old record turntables. *But this fan sings. *It stays at a constant speed, but the tone varies. *It can be heard 300 feet away. *It's not a grinding sound and the blade is not rubbing the housing. *It's just purrs along, while changing in pitch. *Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. *At first it was sort of annoying, but after awhile I have grown to like the sound. *Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. *The bearings are all pretty tight. *I oiled it's bearings well and reassembled it. *I was surprised that it was much quieter for the first ten minutes. *Then it went back to singing. Just curious if anyone knows why it makes these sounds? Could the pitch be changing because of varying wind pressure against the window the fan is mounted in. That was actually my first thoughts. *However, we have had days of calm wind free weather. *It does not seem to indicate that the wind (or lack of it) has any effect. *For the heck of it, I placed another fan on the work bench in there and blew that fan toward the noisy one. *There was little noticable change. *However, I found that there is a certain amound of back and forth play in the motor. *What I mean, is that the fan blade can be moved forward (away from the motor, or backward (toward it). *This play is very small, but it exists. *What causes this is beyond me, but I suspect that there may have been a fiber washer in there when it was new, and that wore out. *This play is not visible when it's spinning, but I suspect that the in and out movement of the shaft is causing the different pitch. *Putting a shim in it might be possible.. I'll have to check what is available. *Yet it seems to me that this type of motor always had a little play. *After all, if they are too tight, they would drag and overheat. *After all, this is a fractional HP motor.. My guess would be 1/20 HP at most. *No, there are no capacitors. *Like I said, this is about the same as the old record player motors. *Basically a laminated iron housing with coils and the rotating magnets in the middle connected to the shaft. *(similar to this).http://www.cprmotor.com/products_img...otor_yj58.jpg- Hide quoted text - - Show quoted text - try more oil first, then chek to see if bearings are slipping in their housing |
#10
Posted to alt.home.repair
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Singing Fan
On Jul 4, 4:28*am, wrote:
On Tue, 03 Jul 2012 12:18:41 -0400, jeff_wisnia wrote: wrote: I have a small window fan in my workshop. *It's one of those old metal expandable units that fits any width of window by moving the sides. *The fan blade is only about 9 or 10 inches. *The motor is a shaded pole motor, similar to the motors used in the old record turntables. *But this fan sings. *It stays at a constant speed, but the tone varies. *It can be heard 300 feet away. *It's not a grinding sound and the blade is not rubbing the housing. *It's just purrs along, while changing in pitch. *Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. *At first it was sort of annoying, but after awhile I have grown to like the sound. *Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. *The bearings are all pretty tight. *I oiled it's bearings well and reassembled it. *I was surprised that it was much quieter for the first ten minutes. *Then it went back to singing. Just curious if anyone knows why it makes these sounds? Could the pitch be changing because of varying wind pressure against the window the fan is mounted in. That was actually my first thoughts. *However, we have had days of calm wind free weather. *It does not seem to indicate that the wind (or lack of it) has any effect. *For the heck of it, I placed another fan on the work bench in there and blew that fan toward the noisy one. *There was little noticable change. *However, I found that there is a certain amound of back and forth play in the motor. *What I mean, is that the fan blade can be moved forward (away from the motor, or backward (toward it). *This play is very small, but it exists. *What causes this is beyond me, but I suspect that there may have been a fiber washer in there when it was new, and that wore out. *This play is not visible when it's spinning, but I suspect that the in and out movement of the shaft is causing the different pitch. *Putting a shim in it might be possible.. I'll have to check what is available. *Yet it seems to me that this type of motor always had a little play. *After all, if they are too tight, they would drag and overheat. *After all, this is a fractional HP motor.. My guess would be 1/20 HP at most. *No, there are no capacitors. *Like I said, this is about the same as the old record player motors. *Basically a laminated iron housing with coils and the rotating magnets in the middle connected to the shaft. *(similar to this).http://www.cprmotor.com/products_img...motor_yj58.jpg Ignore the play in the shaft. All fans will have back and forth movement of the blade. I just checked 4 different fans: A floor standing model, 2 dual blade window fans from different manufacturers and an rather old "industrial" style fan from back in the 60's. Something like this: http://i68.photobucket.com/albums/i1...sstuff6861.jpg Each and every one of them has a small amount of back and forth movement of the shaft. |
#11
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Singing Fan
Stormin Mormon wrote:
Plenty of spelling Nazis to be careful of. Christopher A. Young Learn more about Jesus www.lds.org The top posting cops will get you first Christopher. G Jeff -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10e12 furlongs per fortnight. |
#12
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Singing Fan
Sigh. No one wrote back and flamed for ending a sentence, a preposition
with. What words is the fan capable singing of? Christopher A. Young Learn more about Jesus www.lds.org .. "jeff_wisnia" wrote in message ... Stormin Mormon wrote: Plenty of spelling Nazis to be careful of. Christopher A. Young Learn more about Jesus www.lds.org The top posting cops will get you first Christopher. G Jeff -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10e12 furlongs per fortnight. |
#13
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Singing Fan
On Jul 5, 10:56*am, "Stormin Mormon"
wrote: Sigh. No one wrote back and flamed for ending a sentence, a preposition with. What words is the fan capable singing of? Christopher A. Young Learn more about Jesus *www.lds.org . "jeff_wisnia" wrote in message ... Stormin Mormon wrote: Plenty of spelling Nazis to be careful of. Christopher A. Young Learn more about Jesus *www.lds.org The top posting cops will get you first Christopher. G Jeff -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10e12 furlongs per fortnight. I wonder why he doesn't learn??? |
#14
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Singing Fan
On Jul 5, 12:47*pm, "hr(bob) "
wrote: On Jul 5, 10:56*am, "Stormin Mormon" wrote: Sigh. No one wrote back and flamed for ending a sentence, a preposition with. What words is the fan capable singing of? Christopher A. Young Learn more about Jesus *www.lds.org . "jeff_wisnia" wrote in message ... Stormin Mormon wrote: Plenty of spelling Nazis to be careful of. Christopher A. Young Learn more about Jesus *www.lds.org The top posting cops will get you first Christopher. G Jeff -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10e12 furlongs per fortnight. I wonder why he doesn't learn???- I don't believe that it is a matter of "learning". I believe that it is a matter of "refusal". |
#15
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Singing Fan
On Tuesday, July 3, 2012 4:58:52 AM UTC-7, (unknown) wrote:
I have a small window fan in my workshop. It's one of those old metal expandable units that fits any width of window by moving the sides. The fan blade is only about 9 or 10 inches. The motor is a shaded pole motor, similar to the motors used in the old record turntables. But this fan sings. It stays at a constant speed, but the tone varies. It can be heard 300 feet away. It's not a grinding sound and the blade is not rubbing the housing. It's just purrs along, while changing in pitch. Sometimes it's pretty constant, then suddenly the sound will go up and down rapidly for a half minute or so. At first it was sort of annoying, but after awhile I have grown to like the sound. Its sort of soothing and varies like the waves on a lake. However, just because it's a perfect fit for the small window in that shed, I decided to take it apart and make sure it was oiled. The bearings are all pretty tight. I oiled it's bearings well and reassembled it. I was surprised that it was much quieter for the first ten minutes. Then it went back to singing. Just curious if anyone knows why it makes these sounds? You need to get one of these to accompany it: http://www.hayneedle.com/sale/woodst...:referralID=NA |
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