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Spin-down Times for my Box Fans  Rate Topic 
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 Posted: Fri Jan 25th, 2019 06:57 am
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Levi Mevis
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Hello Everyone as you can see this post is about trying to see which of my Box Fans in my fan collection had the best spin-down time and which one had the worst spin-down time.
So I'm going to be listing my Box Fan Spin-Down times from best to worst.

1. 1960s Eskimo Box Fan: 1 Minute 8 Seconds
2. 1955 Signal Box Fan: 40 Seconds
3. 1960s Air King Box Fan: 30 Seconds
4. 1950s Zero Box Fan: 18 Seconds
5. 1980s Lakewood Box Fan: 10 Seconds

Now as you might have noticed it seems that brand and build quality doesn't necessarily equal to long spin-down times as can be seen by the fact that an Eskimo (McGraw-Edison) box which most consider to be probably the bottom of the barrel so to speak when it comes to build quality and being probably some of the cheapest fans built back in the day having the highest spin-down time, and then the Signal Box Fan which is considered to be the Cadillac of Box Fans by some came in second place. 

But also something I've noticed is that apparently the type of motor and even when the fan was made seems to contribute as well, as can be seen by the fact that the 1980s Lakewood Box Fan came in last place and that most likely had to do with the extremely cheap quality of the fan (while it has a motor that can be lubricated by the owner which was actually a lot better quality than their competitors at the time, the fact that the fan has plastic blades rather than metal blades speaks numbers about the poorer build quality of the fan when compared to the fans made not even 10 years before). 

Those are just some of my observations, feel free to chime in with your feelings about my test results and what you think is or isn't going on with these fans and why you think I got the numbers that I did.

Just a side note all of these fans (except for the Air King which was a permanently lubricated Westinghouse motor with no lubrication holes) have all been recently lubricated and when I ran this test I ran the fans on high speed then used a stop watch to figure out the spin-down time from the time the switch was turned off to the point that the blade finally stopped spinning. 

Thanks,

Levi 

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 Posted: Fri Jan 25th, 2019 12:44 pm
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Tom Zapf
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sometimes dry bearings will have a long spin down time and oiling them actually slows it, but the weight of the blade c an affect spin down, so lightweight cheap plastic blades can slow much faster than a heavier metal blade 

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 Posted: Fri Jan 25th, 2019 01:17 pm
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Levi Mevis
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I had just thought about blade design being another factor in blade spin down time as well after posting this but the dryness of the bearing I would of thought would of decreased the spin-down time rather than increased it.

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 Posted: Fri Jan 25th, 2019 01:31 pm
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Gunner Lake
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There's nothing inherently poorer quality about a plastic blade. Collectors may generally look down on them but they do have a number of advantages over metal blades besides cost:

1. They do not need balancing or straightening.
2. They're more aerodynamic; smoother and more varied curves are possible.
3. They don't readily transfer motor or bearing noise.
4. They won't corrode in a humid environment.

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 Posted: Sat Jan 26th, 2019 03:43 pm
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Allen Bennett
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I agree with the blade weight factor. My ‘53 model 1251 Signal 16” oscillator looks to be made for industrial use, and it has a thick steel blade. Spin down measued at 2 min 8 sec.
[img]blob:http://afcaforum.com/7073410a-78d1-417e-ae09-0910a6c60a5e[/img]

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 Posted: Sun Jan 27th, 2019 06:11 pm
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Lawrence Smith
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Levi, what size box fans? & what lube do you use? Also have you taken the motor apart & degreased & re-oiled or are these quick cosmetic clean ups?I'm just asking -- that is neat info to share I have a compilation of the old eskimo(bersted) box fans ranging from 10-20" . I plan on cleaning them up & will have videos at some point also.
The only box fans currently in use are at my son's house & they are all Emerson's with the green paint. they are very good running unit's. Any pics of your grouping or on facebook, thanks

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 Posted: Sun Jan 27th, 2019 10:10 pm
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Levi Mevis
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Lawrence Smith wrote: Levi, what size box fans? & what lube do you use? Also have you taken the motor apart & degreased & re-oiled or are these quick cosmetic clean ups?I'm just asking -- that is neat info to share I have a compilation of the old eskimo(bersted) box fans ranging from 10-20" . I plan on cleaning them up & will have videos at some point also.
The only box fans currently in use are at my son's house & they are all Emerson's with the green paint. they are very good running unit's. Any pics of your grouping or on facebook, thanks

They are all 20" except the Zero which is a 12", I used zoom! Spout oil, and it was a good cleanup and lube to get them usable and presentable. 
I'll get you a picture of the fans when I get home.

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