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Old 06-23-2009, 10:44 PM   #15
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1972 31' Sovereign
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This Shroud:

Here's a pic of the old one we replaced. It mounts up in the opening before you permanently attach the motor and blade.

Mary
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Old 06-24-2009, 10:42 AM   #16
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Richmond , Kentucky
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Quote:
Originally Posted by klattu View Post
I also wanted the fantastic-fan, as they looked like they could move some air.
But they don't give them away free anymore.
So after you repair your wiring, maybe make up a set of extra large blades.
With these on, I can now feel a breeze from an open window.

Heres the parts needed



Find center, mark it well, and scribe radius.
About 10" maximum


Lay out blades
I made 15


Cut outside.
And sand edges now, before you cut blades




First bends made to blades.
It would work here, but I wanted more


My version of Tornado-Fan


Most important...the center hub.
Trick here is to place bolt in drill press chuck, and the drill in a vise below.
That way it will find true center.
(poor man's lathe)


Old 6" vs new 10"
What a change!
Now it really moves some air...and looks Airstreamy...not SOB plastic
klattu,

Is your custom fan blade any noisier than the original smaller blade?

By the way, that was an ingenious idea!

Brad
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Old 06-24-2009, 11:37 AM   #17
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It does make a different sound.
I can tell it spins slower.
Makes a lower pitched sound, and is more as a house fan sound.

My original 6", I never had a shroud


The 15 blade 10"


And this is a 9 blade 10"...i think this one flows more air
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Old 06-24-2009, 08:32 PM   #18
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Notice on the 6" fan, I do have the screens, just not installed at time of blade change.
I wanted to replace the gasket while I'm doing all this.

Yes, it moves much more air.
If the window is opened about 5", there is a breeze coming thru.

No, there are no shrouds, but now they are not needed.

And I added to check for corrosion between the S/S bolt and aluminum blades every 20 years.
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Old 06-25-2009, 06:46 AM   #19
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Klattu,

The only issue I can think of that you might affect you down the road is the larger fan blades probably draw more current which will shorten the life of the fan motor.

Then again the larger amount of cooling air passing the motor might keep it cooler so it could last longer.......

Keep us posted on how they hold up over time.

Brad
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Old 05-15-2010, 11:38 AM   #20
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1981 25' Excella II
Mesa , Arizona
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I have a NOS replacement fan motor

Hi.
I have one of these. The Airstream part number is 510228-100. It is still in the box. It was made by DCM. Let me know if you'd like it. I'll sell it for $50.00 shipped to your door.
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Old 01-08-2014, 05:00 PM   #21
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1975 25' Tradewind
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Wink ebay motor

I had bad front fan motor and replaced it with $17.00 12 V fan motor off ebay and new fan blades available too .
not as big as original But it mounted the same and works fine.
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