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Post by Jordan U on Feb 9, 2015 22:18:19 GMT -5
If I had a ceiling that was 9 feet, I'd do a 12" or 18" downrod, but that's just my preference to have it a few inches above my head lol I'd never do that in a commercial environment like this.
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Post by Max C. on Feb 9, 2015 23:34:26 GMT -5
The ceiling at Entraide Mercier is probably just around 2,5 m. They could have regular fans on short poles though. Imperial please  Ceiling is 9'-3" high, In the main part of the store we could have fans on a regular downrod That's better. Given that its not quite 10 feet high, Hampton Bay Industrials might be a good option, since the blades are plastic. |
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Post by Jordan U on Feb 10, 2015 7:57:31 GMT -5
Ceiling is 9'-3" high, In the main part of the store we could have fans on a regular downrod That's better. Given that its not quite 10 feet high, Hampton Bay Industrials might be a good option, since the blades are plastic. They also seem to go a fair bit slower than the metal-blade ones due to the blade design. |
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Post by John Shelley on Feb 11, 2015 14:15:37 GMT -5
That's better. Given that its not quite 10 feet high, Hampton Bay Industrials might be a good option, since the blades are plastic. They also seem to go a fair bit slower than the metal-blade ones due to the blade design. Yeah cause of the much higher effective pitch, so for a given CFM they don't need to turn as fast, since each rotation takes a bigger slice of the air, just imagine how much are they could push if they ran at the 330+rpm of typical industrials rather than around 220 rpm (though the bender fan is another example of more pitch based industrial though, as my 3bladers go at 260 rpm, 4blade k63s more like 240rpm. actually what i really want to do is hook about 6 of those Hampton bay blades onto the 3phase 18 pole low speed of an Elmo commercial washing machine motor, actually I'm in the middle of rewinding and old one that was for 110 volt phase to phase it used a 100uf cap to derive the 3rd phase, actually the whole reason I'm rewinding it is to make it into a ceiling fan motor, its rated for max amps of 3.8 continues something like 1/6th HP or more. |
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Post by Jordan U on Feb 11, 2015 16:22:15 GMT -5
actually what i really want to do is hook about 6 of those Hampton bay blades onto the 3phase 18 pole low speed of an Elmo commercial washing machine motor, actually I'm in the middle of rewinding and old one that was for 110 volt phase to phase it used a 100uf cap to derive the 3rd phase, actually the whole reason I'm rewinding it is to make it into a ceiling fan motor, its rated for max amps of 3.8 continues something like 1/6th HP or more. Now that would really move some air! Not sure if I'd go for 6 though, fewer blades usually moves more air so I'd stay at 3. |
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Post by John Shelley on Feb 11, 2015 17:17:58 GMT -5
actually what i really want to do is hook about 6 of those Hampton bay blades onto the 3phase 18 pole low speed of an Elmo commercial washing machine motor, actually I'm in the middle of rewinding and old one that was for 110 volt phase to phase it used a 100uf cap to derive the 3rd phase, actually the whole reason I'm rewinding it is to make it into a ceiling fan motor, its rated for max amps of 3.8 continues something like 1/6th HP or more. Now that would really move some air! Not sure if I'd go for 6 though, fewer blades usually moves more air so I'd stay at 3. It can be affected by many factors though motor power being the big one and the other being one being haw fast the motor turns with no load, all motors other than synchronous ones slow down some as they are loaded up, now up to some point the effect is hardly noticeable (low slip condition, that's where most motors but NOT typical ceiling fans run at full speed), above that point speed varies much more with load(this is high slip, where most ceiling fan motors run on high), with a motor this large (3 in thick stator also) it is quite possible that in will be running with low slip rather than high slip like most ceiling fans, if so the number of blades wont affect the speed much in which case more blades will = more air. Note that for brush motors there is no such thing as slip, speed is only affected by load, but asynchronous AC motors can only run below synchronous speed, for an 18 pole motor(most stack motors fans and the really good early spinners) at 60hz that is 400 rpm, for 16 pole(cheaper spinners but still can be good, like say oh hunters pre 2011) 450, 14 pole(cheapy spinners that for the most part don't work so good heritage I'm looking at you, though others have done it encon and litex for starters, though some of latter worked ok...) 514, 12 pole 600(had an 1895 whos no load speed was close to this needles to say it runs at very high slip and hates any voltage drop might put a boost autotransformer on it) for th3 20 pole skeletal motors in newer originals 360 rpm is the limit as for the old style 28 pole ones the fastest they could ever turn is 257 rpm so for them 4 blades is better than 2 |
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Post by Jordan U on Feb 11, 2015 18:16:57 GMT -5
It can be affected by many factors though motor power being the big one and the other being one being haw fast the motor turns with no load, all motors other than synchronous ones slow down some as they are loaded up, now up to some point the effect is hardly noticeable (low slip condition, that's where most motors but NOT typical ceiling fans run at full speed), above that point speed varies much more with load(this is high slip, where most ceiling fan motors run on high), with a motor this large (3 in thick stator also) it is quite possible that in will be running with low slip rather than high slip like most ceiling fans, if so the number of blades wont affect the speed much in which case more blades will = more air. Note that for brush motors there is no such thing as slip, speed is only affected by load, but asynchronous AC motors can only run below synchronous speed, for an 18 pole motor(most stack motors fans and the really good early spinners) at 60hz that is 400 rpm, for 16 pole(cheaper spinners but still can be good, like say oh hunters pre 2011) 450, 14 pole(cheapy spinners that for the most part don't work so good heritage I'm looking at you, though others have done it encon and litex for starters, though some of latter worked ok...) 514, 12 pole 600(had an 1895 whos no load speed was close to this needles to say it runs at very high slip and hates any voltage drop might put a boost autotransformer on it) for th3 20 pole skeletal motors in newer originals 360 rpm is the limit as for the old style 28 pole ones the fastest they could ever turn is 257 rpm so for them 4 blades is better than 2 This is true, the motor power does make a huge difference, but I thought that even at the same speed more blades doesn't necessarily mean more air flow. I suppose there's probably many other factors that go into it such as blade shape, pitch, etc. I have one of those vintage Hunters with the 28-pole 2.5 amp motor. My guess was it ran at around 250 RPM, that was a pretty good guess lol Those motors have some serious power |
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Post by John Shelley on Feb 11, 2015 19:38:21 GMT -5
This is true, the motor power does make a huge difference, but I thought that even at the same speed more blades doesn't necessarily mean more air flow. I suppose there's probably many other factors that go into it such as blade shape, pitch, etc. Yeah static pressure also, that's going to a 2 foot downrod can help a lot. I have one of those vintage Hunters with the 28-pole 2.5 amp motor. My guess was it ran at around 250 RPM, that was a pretty good guess lol Those motors have some serious power 2.5 AMPs nameplate or that's actually what an ampmeter says? either way, yikes I think my favorite original would be the 28pole PSC version (from mid 80's though about 2001) |
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Post by Jordan U on Feb 11, 2015 20:18:15 GMT -5
2.5 AMPs nameplate or that's actually what an ampmeter says? either way, yikes I think my favorite original would be the 28pole PSC version (from mid 80's though about 2001) That's what the tag says, I've never actually tested it. Mine is from 1981, I think shortly after that they dropped down to 2.1 amps, then later 0.9 as we have today. |
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Post by becausecanadia on Feb 12, 2015 7:32:56 GMT -5
Buy Canarms, take downrods off, use pipe cutter, cut downrods, drill new hole for pins, re-assemble, hang, profit.
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Post by Jordan U on Feb 12, 2015 10:57:14 GMT -5
Buy Canarms, take downrods off, use pipe cutter, cut downrods, drill new hole for pins, re-assemble, hang, profit. I had to do this to the downrod that came with my Original. |
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Post by becausecanadia on Feb 13, 2015 18:37:32 GMT -5
Buy Canarms, take downrods off, use pipe cutter, cut downrods, drill new hole for pins, re-assemble, hang, profit. I had to do this to the downrod that came with my Original. The only downrod I havent cut on any of my industrials is the 36" Goldline in the garage..the ceiling is high enough that I can't touch the fan on its 10" downrod |
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Post by Jordan U on Feb 13, 2015 22:25:39 GMT -5
The only downrod I havent cut on any of my industrials is the 36" Goldline in the garage..the ceiling is high enough that I can't touch the fan on its 10" downrod Do you have any pictures/videos of it? I love 36" Goldlines! |
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Post by Deleted on Feb 14, 2015 21:49:11 GMT -5
From 2 magazines, 1992 Nadairs from a lighting showroom ad  Canarms,   Nadair if i'm right   2000 Canarms    Nadair  Fan ad  It says to reverse the fan direction so the hot air from the ceiling will come down 02- 2000 NADAIR I was surprised by how low this fan was running, But was moving a good amount of air   03 - 1988 CANARM "Waterton" This fan was so yellowed it was orange on the bottom plate. It still was yellowed but it was good for me.   |
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Post by Deleted on Feb 14, 2015 21:53:43 GMT -5
Guys, for the fans in our store, I might go with hampton bay industrial juste because they are almost the same price as canarm industrials,
But I won't have to cut the hampton bay's downrod, plus the mounting is easier than the canarm's one.
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