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Aeroscrew fan  Rate Topic 
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 Posted: Sat Sep 11th, 2021 11:14 pm
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Louis Luu
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Trying to find out more about this fan.  Arrived today.  British made.








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 Posted: Sat Sep 11th, 2021 11:34 pm
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Jim Kovar
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Wow!, that's wild.  :clap:

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 Posted: Sun Sep 12th, 2021 12:57 am
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Thomas Peters
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Indeed it is Jim, with both color and design.

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 Posted: Sun Sep 12th, 2021 01:40 pm
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Jim Kovar
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Love the "prop."

Pitch variable?

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 Posted: Sun Sep 12th, 2021 01:45 pm
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Louis Luu
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I have no idea what Pitch variable is? If you are referring to the grotesque lime green...yes it is ugly. I do like the aluminum blade and propeller design. Need to get it redone in a different green though. I like the red center propeller screw.

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 Posted: Mon Sep 13th, 2021 12:37 am
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Jim Kovar
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Louis Luu wrote: I have no idea what Pitch variable is?
Is the pitch variable?



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 Posted: Mon Sep 13th, 2021 01:04 am
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Louis Luu
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Jim...I don't think I ever seen a variable blade on a fan before...would be neat. Change the pitch to move the air instead of the speed of the blade.

Mine is just cast aluminum. Neat art deco look. But that lime green has to go.

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 Posted: Tue Sep 14th, 2021 02:00 am
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John Evans
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Just quickly glancing at the blades, I would ask the same question as Jim about about potential variable pitch. We can always dream of finding a new fan mechanism...lol.

Last edited on Tue Sep 14th, 2021 02:01 am by John Evans

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 Posted: Tue Sep 14th, 2021 02:05 am
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Louis Luu
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I do see what you are saying base on the picture.

I doubt it is variable pitch...have not taken the blade off yet. I just assume it was one single piece.

How would the pitch be regulated? Spring tension, inner rotor assembly attached to a lever?

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 Posted: Tue Sep 14th, 2021 02:37 am
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Louis Luu
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WOW...really neat.  I would leave the cone out.  Would love to convert a franken fan into one of these with an aluminum blade.



Last edited on Tue Sep 14th, 2021 02:38 am by Louis Luu

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 Posted: Thu Sep 16th, 2021 02:32 pm
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Tony Gilbert
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The green is unusual, but original. Yours is the third I’ve seen in 30 years.

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 Posted: Thu Sep 16th, 2021 02:34 pm
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Louis Luu
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Good morning Tony. Thank for the information. I guess I'll learn to live with the lime green.

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 Posted: Fri Oct 1st, 2021 04:49 pm
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Louis Luu
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Looks like a little fun project for small toy motors.  Definitely suited for CAD.    Note to self...double shaft with spring and adjustment wheel attached to inner shaft on the back end.




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 Posted: Fri Oct 1st, 2021 05:14 pm
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Louis Luu
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Adjustment mechanism.



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 Posted: Sat Oct 2nd, 2021 04:48 am
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Jim Kovar
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Here's some more to ponder, Louis.

http://www.afcaforum.com/view_topic.php?id=39957

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 Posted: Sat Oct 2nd, 2021 11:26 am
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Louis Luu
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Thanks Jim. That base is reminiscent of a GEC. I will be focusing on making the pitch mechanism. Any blade can be attach. Neat blade design but don't see it really moving air forward...outward? Now, I gotta have that blade. After seeing a Ming blade, I thought that was it. But that blade has to be made.


The front mechanism is not difficult to design but lots of parts. To solve the rotor obstruction, there will be two shaft. One outer and one inner. The outer shaft will go straight through to the rotor while the inner shaft sits in the middle and runs out to the back end. There will need to be a wheel with various size with an arm assembly that allows rotation to select for pitch.

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 Posted: Sun Oct 3rd, 2021 02:15 pm
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Louis Luu
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I see the adjustment knob in the front.  I'm guessing a bevel gear adjustment and a thumb lock screw.  This would be a lot easier to adjust than my idea of having the double shaft and adjustment in the rear of the motor.


Jim Kovar wrote:



Here's some more to ponder, Louis.

http://www.afcaforum.com/view_topic.php?id=39957

Last edited on Sun Oct 3rd, 2021 02:18 pm by Louis Luu

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 Posted: Sun Oct 3rd, 2021 02:37 pm
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Louis Luu
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Quick note to self.




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 Posted: Sun Oct 3rd, 2021 02:38 pm
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Louis Luu
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Get rid of front spring.

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 Posted: Sun Oct 3rd, 2021 02:46 pm
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Louis Luu
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The only thing I can't figure out is...why is it called a "Double Blackman"? Should it not be a Triple Blackman instead?

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 Posted: Mon Oct 4th, 2021 06:54 am
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Louis Luu
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 Posted: Mon Oct 4th, 2021 06:58 am
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Louis Luu
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 Posted: Mon Oct 4th, 2021 07:00 am
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Louis Luu
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 Posted: Mon Oct 4th, 2021 07:00 am
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Louis Luu
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 Posted: Sat Oct 9th, 2021 11:02 am
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Louis Luu
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