carlyto99
 
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Wed Nov 24, 2010 3:01 pm

If it is a federal, did federal ever make directional rotors?
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Travis
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Wed Nov 24, 2010 5:36 pm

carlyto99 wrote:If it is a federal, did federal ever make directional rotors?
It looks like a giant Q rotor to me.
-The Princess

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NeoThunderBolt85
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Wed Nov 24, 2010 7:12 pm

Lol wow...Reminds me of a norelco electric shaver! Cool pic though.
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r4tbolts
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Wed Nov 24, 2010 9:39 pm

Safe to say this predates OSHA.

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SirenMadness
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Wed Nov 24, 2010 11:07 pm

Mantis wrote:Also, the guy on the far left walking by doesn't seem bothered at all (!).
The rotors look stationary, so they were probably just posing for the picture.
~ Peter Radanovic

electrosiren
 
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obviously

Fri Dec 03, 2010 3:45 pm

It is obviously a giant vacuum cleaner suction kind of thing. You can tell by the tublar trough thing around it to guide the air around. With a giant vacuum cleaner you would still need ear protection

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Daniel
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Fri Dec 03, 2010 4:55 pm

You can plainly see the slots on the side of the rotors, and the fronts of the stators are actually covers with screws around the edges. This giant Norelco shaver is indeed a siren with three ten-port heads, if counting the rotor vanes means anything. Why else would they be posing with their fingers in their ears? I wonder how long it could run on a single charge? :D

I wonder whether it had one motor and a gearbox or three separate motors. Either way, just one of those siren heads is larger than anything Federal or any other company made in those days.
Lex orandi, lex credendi, lex vivendi.

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FahmiRBLX
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Re: Is this a better photo of that mystery chicago siren

Thu Nov 23, 2017 4:34 am

I remembered my best friend what this siren is. He says that he saw a siren like this, during his trip to Washington DC, visiting his penfriend there and he saw the siren mounted on top of a single, common pole, next to another building, according to his drawing of that Mystery Siren he game to me, but in his one it has projector / intake cone. anyways, I assume that siren is a Federal Type B prototype.
A Muslim Malaysian, a siren & aviation enthusiast, and gamer.

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Chem_Boffin_6589
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Re: Is this a better photo of that mystery chicago siren

Thu Nov 23, 2017 5:52 pm

FahmiRBLX wrote:
Thu Nov 23, 2017 4:34 am
I remembered my best friend what this siren is. He says that he saw a siren like this, during his trip to Washington DC, visiting his penfriend there and he saw the siren mounted on top of a single, common pole, next to another building, according to his drawing of that Mystery Siren he game to me, but in his one it has projector / intake cone. anyways, I assume that siren is a Federal Type B prototype.
Since when did Model B prototypes exist? First time I've heard of one.
Alfie Woolard
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NahIDee
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Re: Is this a better photo of that mystery chicago siren

Sat Nov 25, 2017 2:39 am

FahmiRBLX wrote:
Thu Nov 23, 2017 4:34 am
I remembered my best friend what this siren is. He says that he saw a siren like this, during his trip to Washington DC, visiting his penfriend there and he saw the siren mounted on top of a single, common pole, next to another building, according to his drawing of that Mystery Siren he game to me, but in his one it has projector / intake cone. anyways, I assume that siren is a Federal Type B prototype.
Nowhere near to being a Federal Type B
Greetings from Saint Paul, Nebraska!

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