any footage

[Robert Gift]

China has the only two that we know of. One has been converted to use an electric motor, and I think the other has a different engine in it than what it originally used. Not sure on that one though.

Hey! I'm in China right now.
Where? Beijing?
Buthe flunkies would probably consider OUR Victory siren a SECRET and NOT allow inspection, photograph or sound recording.

Buthen, again, they may be proud, and SHOULD be, to show it off.

Depends if you ask a flunky or not.

[Blasty]

This is all I know. I don't remember where the photos of the other one were. http://www.victorysiren.com/x/photo-pag ... oto-17.htm

Normal black text is sufficent, by the way.

[Robert Gift]

This is all I know. I don't remember where the photos of the other one were. http://www.victorysiren.com/x/photo-pag ... oto-17.htm

Normal black text is sufficent, by the way.

I was trying to convey the Red China touch!
Sad country.
Should be #2 behind the US.
Instead is "2-1/2" as in THIRD WORLD.

Blasty, thanks for the link.
VERY interesting! But why a picture of mostly the engine?
I'd like to see other views, especially the working end.
Like, where does the air go in?

Funny, but why bother with a muffler on a siren?

Also, why Fujian Province but no city?
Like saying the siren is in Texas but not narrowing it down.

Thanks for the photos.

[Blasty]

Ah, sorry about the misunderstanding on the font. There are so many people out there that do that to make theirs be seen, as if it was invisible before.

Somewhere there were pictures of the other one of these sirens, along with a video (not running though). I have no idea where they would be, other than my old hard drive which I currently don't have a working computer to accommodate.

Oh, and I never gave the muffler any thought before. Great observation!

[Robert Gift]

Ah, sorry about the misunderstanding on the font. :) There are so many people out there that do that to make theirs be seen, as if it was invisible before.

Some people just wanto be noticed.

Actually, years ago I thought of making an "engine siren".

You rev up the engine and the un-mufflered exhaust bursts, like a race car engine, IS the "siren".

Wonder if that would be any good?

How do you get such movies in the first place?
Would be fascinating to see.

Seems that the Victory Siren was so expensive and heavy, imaging trying to get it to the top of a building, (requiring reinforced roof), that many smaller sirens would more practical, especially if the ONE V-siren failed to operate.

I'd love to see the rotor and stator.
How did the sound come outhose forward-facing exponential horns?
Appears there must have been sound cancellation in the stator chamber
before the cones.

Did early designers consider cancellation, or did they merely rely on
brute strength?
I would go for efficiency and make things smaller and lighter.
Would removing the sound manifold allow the siren to be even louder?

[Shinkansen]

This is all I know. I don't remember where the photos of the other one were. http://www.victorysiren.com/x/photo-pag ... oto-17.htm

Normal black text is sufficent, by the way.

I was trying to convey the Red China touch!
Sad country.
Should be #2 behind the US.
Instead is "2-1/2" as in THIRD WORLD.

Blasty, thanks for the link.
VERY interesting! But why a picture of mostly the engine?
I'd like to see other views, especially the working end.
Like, where does the air go in?

Funny, but why bother with a muffler on a siren?

Also, why Fujian Province but no city?
Like saying the siren is in Texas but not narrowing it down.

Thanks for the photos.

Haha, yeah. The siren sure IS a muffler.

[SirenMadness]

I'd love to see the rotor and stator.
How did the sound come out those forward-facing exponential horns?
Appears there must have been sound cancellation in the stator chamber
before the cones.

Did early designers consider cancellation, or did they merely rely on
brute strength?
I would go for efficiency and make things smaller and lighter.
Would removing the sound manifold allow the siren to be even louder?

The sound comes out the chopper from its holes. The chopper on the Chrysler siren is a disc, so compressed air goes through the chopper and through the horns, which are attached to the stator.
Because a disc moves no air itself, the compressor does the work of providing positive pressure to the stator, instead of the rotor.

There should be no cancellation of the sound, as far as I'm concerned. The chopper lies millimeters from the stator, so there shouldn't bee too many imperfections. And there are no curved or angled directing chambers to cause any cancellation.

[Blasty]

Here's the rotor.
http://victorysiren.com/x/photo-pages/c ... to-154.htm

The stator is pretty much the ends of the horn throats, I believe. Hitting the "NEXT" button at the top of that page will show you how thick it is.

[Robert Gift]

The sound comes out the chopper from its holes. The chopper on the Chrysler siren is a disc, so compressed air goes through the chopper and through the horns, which are attached to the stator.
Because a disc moves no air itself, the compressor does the work of providing positive pressure to the stator, instead of the rotor.

There should be no cancellation of the sound, as far as I'm concerned. The chopper lies millimeters from the stator, so there shouldn't bee too many imperfections. And there are no curved or angled directing chambers to cause any cancellation.

Oh, interesting. That's a whole new concept to me. Thanks.
I thought it was an engine-driven spinning rotor.

Yes, directly into the cones would be very efficient.

But some cancellation would occur as the waves from the different
cones intermingled out ahead.

Buthat is a whole different frustrating problem.

[Mister_Penetrator]

There's a half-hour long video called "The Day Called X," which was made in 1955 and has footage of Chrysler sirens rotating. I think the sound is dubbed over though.

The video shows what it would be like if an H-bomb attack on Portland, Oregon was about to take place. There is a shot of a siren rotating at the beginning, somewhere in the second half, and at the end.

Both halves of it can be found here http://www.archive.org/search.php?query ... Aprelinger

I hate to break the story to you, but the link seems to be dead