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AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > GE 3 wing box fan blade vibrations

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GE 3 wing box fan blade vibrations  Rate Topic 
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 Posted: Mon Jan 29th, 2018 03:39 am
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Kaleb Paugel
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So, the problem with my fan here is that its got some pretty loud vibrations. Im pretty sure its in the blade because my 5 wings do not do the noise. Its not the typical howling noise its a really low pitch but loud vibration but does it on certain RPM's. 

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 Posted: Mon Jan 29th, 2018 04:36 pm
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Levi Mevis
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Well Kaleb, (Its kind of funny saying your name because that's my cousin's name as well) it sounds like your blades may be out of clock and need to be straightened out, I have an early 1960s vintage Eskimo boxfan that does the same thing as your fan is doing and its because the blades are out of whack and need to be straightened out, which is easier said than done, because you have to get the blade pitch just right or it will continue to vibrate, possibly even worse until you get the blades back into shape.

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 Posted: Mon Jan 29th, 2018 06:18 pm
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Tom Zapf
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Kaleb, when you say vibration, is the fan shaking? or do you get a "rumble" as the fan accelerates to speed? Both are common to the 1960-67 metal blade box-style fans. If the fan is shaking while running at a consistent speed then you have either a bent blade or lost a blade weight. i have a method for fixing that. On the other hand if you get a metallic rumble as the fan speeds up to the set speed, this is also common, but i have not had a way to fix what is flexing of the metal blade. The earlier 1954-59 blade is different and heavier than the 1960-67 blade. The later blade has a flex in it that makes the rumble as the fan goes through certain RPMs...is that what you have? That will come and go and doesnt always make a continuous noise... let me know if i can help you... tom 

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 Posted: Mon Jan 29th, 2018 07:20 pm
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Kaleb Paugel
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Yes it is the rumbling issue with no offbalance

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 Posted: Tue Jan 30th, 2018 01:51 pm
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Tom Zapf
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That is unfortunately pretty common, i have a spruce aqua version that does that  as it speeds up and it is from blade flex and as long as it doesnt do that all the time you should be ok.....

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