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ILG 363 36” exhaust fans  Rate Topic 
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 Posted: Tue Jun 12th, 2018 12:53 am
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Dan Foley
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Matthew O Neill wrote: The refinery I work at still has several ILGs in service, when they stop running,the motor is sent out to be rewound. It’s one thing I’m glad to see, as much as things are replaced, those vintage ILGs are running 24-7.

That's pretty good to hear.  Makes a lot more sense than pulling them down and installing new fans.  Do you have any pics of them?

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 Posted: Tue Jun 19th, 2018 11:58 pm
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Robert Avary
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Any guesses as to what may lie behind these three shutters???



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 Posted: Wed Jun 20th, 2018 04:11 am
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David Allen
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Robert Avary wrote: Any guesses as to what may lie behind these three shutters???






Hopes and dreams! :D

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 Posted: Thu Jun 21st, 2018 12:46 am
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Robert Avary
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David Allen
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Robert Avary wrote: Any guesses as to what may lie behind these three shutters???






Hopes and dreams! :D
Hope it runs and dream it’s a 72”??
Ive been by this building numerous times, not until the other day did I notice the cooling tube, done a double take on street view and bingo! not very good pics so I snapped a couple more with my phone today. I’m going to see about getting some on the inside of the building. 

Update on the 363: got the hub soaking while I’m building a special puller as to not mess anything up. Got a few videos but haven’t had time to get those uploaded. Stay tuned this rodeo is just getting started!




















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 Posted: Thu Jun 21st, 2018 02:46 am
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Duane Burright
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Robert Avary wrote: Hope it runs and dream it’s a 72”??

You'd bag the elephant if you got a 72"!

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 Posted: Thu Jun 21st, 2018 02:48 am
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David Allen
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Duane Burright wrote: Robert Avary wrote: Hope it runs and dream it’s a 72”??



You'd bag the elephant if you got a 72"!


Actually, that would be bagging a wooly mammoth, live, with nothing but a packet of peanuts to attract it!

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 Posted: Thu Jun 21st, 2018 03:07 am
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Robert Avary
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David Allen wrote: Duane Burright wrote: Robert Avary wrote: Hope it runs and dream it’s a 72”??



You'd bag the elephant if you got a 72"!


Actually, that would be bagging a wooly mammoth, live, with nothing but a packet of peanuts to attract it!
  Haha 😂 I would just be happy to see a 72” in person. Dont know where I would put one. I’m going to guess they are at least 48”and If I’m not mistaken the building is on the historic register so whatever is in there probably won’t be removed. 
P.S. Does anyone know if a solution has been found for the blade bushing on the ilg box fans??



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 Posted: Thu Jun 21st, 2018 04:18 am
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Dan Foley
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Definitely see if you can gain access to that building!  That would be great to see three larger ILGs all lined up out in the wild.  Andrew Block posted this picture a few years ago, both 72":


90,000 CFM  :up:

https://afcaforum.com/forum1/40988.html

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 Posted: Thu Jun 21st, 2018 04:38 pm
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Robert Avary
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🤤 Wow! Now that’s a great find! 90,000 cfm? 😳 Better hold on to your hat. Hopefully there’s plans to save those one day if the opportunity comes about. No easy feat, but would be well worth it.

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 Posted: Sat Jun 23rd, 2018 10:03 pm
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David Allen
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Robert Avary wrote: 🤤 Wow! Now that’s a great find! 90,000 cfm? 😳 Better hold on to your hat. Hopefully there’s plans to save those one day if the opportunity comes about. No easy feat, but would be well worth it.
Definitely worth it!

I think I did some figuring a while back and.... if my 48W box fan were scaled up to a 72" model, the box would be 8 feet tall and 4 feet deep!!!


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 Posted: Sun Jul 22nd, 2018 11:12 pm
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Robert Avary
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David Allen wrote: Robert Avary wrote: 🤤 Wow! Now that’s a great find! 90,000 cfm? 😳 Better hold on to your hat. Hopefully there’s plans to save those one day if the opportunity comes about. No easy feat, but would be well worth it.
Definitely worth it!

I think I did some figuring a while back and.... if my 48W box fan were scaled up to a 72" model, the box would be 8 feet tall and 4 feet deep!!!



That would be a monster!!! I wouldn’t want to move it around much or very far at that!! 

Just a little update.....I’ve been extremely busy lately and haven’t had much time to work on the fans but I did manage to get fan #2 upright and running. It will need bearings too and I have some blade balancing to figure out. It seems that one blade if not the other two are out of track. I’m going to take measurements off of the other fan and compare them. If that doesn’t fix the problem I’ll have to see about adjusting the weight. 

Also have that building owners contact info and need to get in touch with him.

Last edited on Sun Jul 22nd, 2018 11:14 pm by Robert Avary

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 Posted: Mon Jul 23rd, 2018 12:46 am
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Andrew Block
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No no no on the weight! It was balanced from the factory statically AND dynamically! It needs to be returned to the original position somehow. Likely the fan blades got bent forward/backward when the fan was removed. Don't start adding or subtracting weight or you will NEVER get it balanced.

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 Posted: Mon Jul 23rd, 2018 02:53 am
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Robert Avary
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Andrew Block wrote: No no no on the weight! It was balanced from the factory statically AND dynamically! It needs to be returned to the original position somehow. Likely the fan blades got bent forward/backward when the fan was removed. Don't start adding or subtracting weight or you will NEVER get it balanced.
I understand what you’re saying, there’s no “visible” damage to the blades so blade mass shouldn’t have changed. All I can do is get the blades back to what I think is the right position going off of measurements from the other fan and hope that solves the issue. 

You’re correct...i didn’t mean “permanently” changing the weight, when I statically balance rotor blades I use clay to add weight on the light side, then depending on the blade material and weight differential I either remove material from the heavy blade or add lead to the light side. If they’re still unbalanced I may use a dab of clay and see what happens. No need to worry the grinder isn’t coming out. I’m pretty particular when it comes a situation like this! Thanks for the reply!! 

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 Posted: Mon Jul 23rd, 2018 04:28 am
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Andrew Block
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Sorry for the overreaction, someone recently ground off 1/4" off a Hunter Zephair because he "couldn't understand how the weight could be changed by alignment." So basically he needs a new blade now when he could have reclocked then blades easily.

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 Posted: Mon Jul 23rd, 2018 04:28 am
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Andrew Block
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Sorry for the overreaction, someone recently ground off 1/4" off a Hunter Zephair because he "couldn't understand how the weight could be changed by alignment." So basically he needs a new blade now when he could have reclocked then blades easily.

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 Posted: Mon Jul 23rd, 2018 04:50 am
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Robert Avary
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No reason to be sorry, I understand where you’re coming from, I would have done the same thing. Good thing you said that...thanks for speaking up..hopefully we can prevent that from happening again.  

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 Posted: Wed Jul 25th, 2018 01:16 pm
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David Allen
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Robert Avary wrote: Andrew Block wrote: No no no on the weight! It was balanced from the factory statically AND dynamically! It needs to be returned to the original position somehow. Likely the fan blades got bent forward/backward when the fan was removed. Don't start adding or subtracting weight or you will NEVER get it balanced.

I understand what you’re saying, there’s no “visible” damage to the blades so blade mass shouldn’t have changed. All I can do is get the blades back to what I think is the right position going off of measurements from the other fan and hope that solves the issue. 



You’re correct...i didn’t mean “permanently” changing the weight, when I statically balance rotor blades I use clay to add weight on the light side, then depending on the blade material and weight differential I either remove material from the heavy blade or add lead to the light side. If they’re still unbalanced I may use a dab of clay and see what happens. No need to worry the grinder isn’t coming out. I’m pretty particular when it comes a situation like this! Thanks for the reply!! 


Hopefully you can straighten the hub and get the fan running true again. These fans are quite sensitive to balance problems. Uneven dirt buildup can affect them. See that nobody has painted over a bunch of dirt buildup in the past, or some similar issue.

If the hub is bent so that certain blades are pushed forward or backwards; it can be fixed with some simple methods. You'll want to install some measurement "reference point" such as a bar across the front of the fan. Measure from the same point on the bar to the same point on each blade. They should all pass at the same distance from the bar. The same can be done from the back, as well. Measure from one of the motor support arms to the blade tip. Each tip should pass at the same distance to the reference point.

As for balancing, if something really bad happens, such as having to replace a missing blade tip, this is what is involved with re-balancing: https://www.youtube.com/watch?v=rJmD5IUTWT0


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 Posted: Fri Jul 27th, 2018 01:10 am
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Brian Hicks
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Hey Robert, glad to see another collector from the area. Unfortunately it looks like I will not be attending FF but, hope to meet you someday. Thanks. Great ILGs... didn't know they made their way around here.

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 Posted: Sun Jul 29th, 2018 11:15 am
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Robert Avary
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David, exactly what I was thinking except for the bar across the front, didn’t think to do that. I did take some rough measurements off of the motor struts the other day, just have to find my good straight edge to cross the front. So far it doesn’t look too bad, measure, tweak, repeat till it’s as close as I can get it. At this point re balancing like yours shouldn’t be needed, fingers crossed..... 
Hey Brian, glad to hear from you! Unfortunately I won’t be attending FF this year either, funny thing though I’m heading through Asheville as I’m typing this. Too bad I’m a few days early. Likewise, I do happen to make a couple trips a year down your way, be glad to stop in and say hello.
 
That makes two of us... never really thought to look to be honest. Just picked up another Ilg the other night at a yard sale. Nothing really to write home about, just a newer squirrel cage type fly fan. It said ILG and for $10 couldn’t pass that up! 

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 Posted: Sun Jul 29th, 2018 08:03 pm
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David Allen
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Robert Avary wrote: David, exactly what I was thinking except for the bar across the front, didn’t think to do that. I did take some rough measurements off of the motor struts the other day, just have to find my good straight edge to cross the front. So far it doesn’t look too bad, measure, tweak, repeat till it’s as close as I can get it. At this point re balancing like yours shouldn’t be needed, fingers crossed..... 

Hey Brian, glad to hear from you! Unfortunately I won’t be attending FF this year either, funny thing though I’m heading through Asheville as I’m typing this. Too bad I’m a few days early. Likewise, I do happen to make a couple trips a year down your way, be glad to stop in and say hello.

 

That makes two of us... never really thought to look to be honest. Just picked up another Ilg the other night at a yard sale. Nothing really to write home about, just a newer squirrel cage type fly fan. It said ILG and for $10 couldn’t pass that up! 


I'm sure you'll get the balancing right. It just takes time and patience. I find that sometimes the blade pitch is out of whack. and that makes it necessary to measure from both the front and the back. But you may get lucky.

Neat about the Ilg centrifugal blower! Hope to see a picture or two of that one.

Sincerely,
David

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 Posted: Fri Aug 3rd, 2018 03:50 pm
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Robert Avary
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Here it is! Dated 3/84. Had trouble uploading the pics from my phone this time for some reason but finally got it to work. 

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 Posted: Fri Aug 3rd, 2018 04:13 pm
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David Allen
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Robert Avary wrote:



Here it is! Dated 3/84. Had trouble uploading the pics from my phone this time for some reason but finally got it to work. 



Oh, that's nice and will make a great, concentrated / focused air mover for working under cars etc.

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 Posted: Fri Aug 3rd, 2018 08:57 pm
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Robert Avary
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Excellent idea!! Been thinking of what to use it for... new cord and a toggle switch and I’ll be in business. Do you think a speed control would work with this blower? 

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 Posted: Fri Aug 3rd, 2018 09:20 pm
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David Allen
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Robert Avary wrote: Excellent idea!! Been thinking of what to use it for... new cord and a toggle switch and I’ll be in business. Do you think a speed control would work with this blower? 
Hard to know about the speed control. I would say, rig it up temporarily and see what sort of response you get. If it works well and doesn't get too hot - go for it!

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 Posted: Sat Aug 11th, 2018 05:05 pm
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Andrew Block
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The fly fans I have like that are 2 speed and take the a 2PDT switch that is jumpered correctly.

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