When I built mine I printed some screen captures from the DVD on my computer, and just used some scrap wood from an old house that they were tearing down near here. I even deliberately bent over some of the nails and banged the hammer a few more times than necessary to give it that "crude / slapped together" look. I used a 20 gallon plastic bucket, and 2 plastic pails to make it look close to what a big speaker might look like. The "horn" at the rear is made with some of the corrugated plastic sheet from an old election sign.
Here are the screen caps, and mine...
W-O-W writes: I have made a Roof Speaker with 2 Kenwood 60w Speakers fully working Music and PA but it looks a bit small
flcl64 then posted this youtube link:
What I would like to know is where that row of sirens in crates at the end of that vid was located at - imagine if that still existed - one siren for practically everybody here.
Anybody ever try to get measurements off the one located next to that small building. If I remember, it is located on or near a military installation - any chance of them allowing measurements? I doubt very much that it could ever be purchased.
and TK826 responded
The crate photos came from eBay... years ago. From what I understand they were listed once, didn't sell.. and never returned.
The military installation is in Canada.
I've collected a bit of info on this subject, over the years...
Steam related how JosephBlues got his siren plans from scaling up from the ERTL model:
I made the horn, through much trial and error, out of (front ring) single one man trampoline ring. Screwed eight supports to a 2 foot dia. flex conduit attached to a half 50 gal plastic barrel. Used an industrial lamp shade (maybe track light shade) I found at a junk store for the end of the barrel. Covered the 18" from tramp. ring to barrel with alum. flashing. Just a note it took two weeks of meditation in Sun. school to figure how to cut the flashing to cover a cone. Maybe I should have listened more to the ss teacher, God may have lessened the headache I had trying to put this horn together from scrap. Anyway, I used the 1/18 model to scale it out. Used 18" of 8 " sewer pipe (new not used) The snorkle looking thing is actually, Lowe's heat duct and 45 angle filled in with flashing and heating duct tape . I got the top peice pointed wrong. Inside ring is more flex conduit( I really rushed this to get ready for the weekend of the 25th.) A piece of roofing tin bent to form a cone (see above reference to Sunday school) attached to a plastic laundry hamper. Center is a 11'' plastic plant pot inverted. Incidently the whole thing can be lifted easily, not heavy at all. Sprayed it all with grey primer. Added a 6x9 speaker in the plant pot, ran it to the stereo. I plan to put in a cb with pa and wire a two way switch for both. Square end box is alum flashing cut at an angle and heating duct tape. Held up at about 30 mph on a 15 mile ride. Thanks for the interest.
They posted all kinds of photos of their tour throughout the entire place, and there doesn't appear to be any trace of a third siren.
The technical specs for this siren seem to have been lost over time. There are a couple website/message boards out there dedicated solely to cold war era sirens. This siren has proven to be an anomaly, even to them. (Because these are so rare, I'm thinking they were not made in different sizes)
From what I have learned, most of what is known about the siren is found on the small mfg. name plate. (volts, amps, HP. etc)
It is estimated to be around 4 feet tall. With the standard base, the siren weighs in at around 600-800 pounds all together.
Because so little is known about it, (and without being able to examine it's internal mechanisms) no one has yet been able to actually figure out how it even works.
Many people believe that it's a dual toned model, housing a rotor/stator assembly in the base of the front projector, and a second one in the rear chamber that has the hook-shaped horn coming off it. It is possible that they were originally designed to be single-tone sirens, but were then modified with an added rear rotor, because Canadian regulations required dual-tone sirens for civil defense purposes.
The front is actually a horn within a horn. It is believed air enters through the central horn and sound is dispersed through the space between the inner and outer cones. On the back, air would enter another horn, through the little protrusion on the back, and exits through the top of the hook-shaped rear section.
76Bluesmobile: Has anyone considered trying to contact the Diefenbunker to see if they might be willing to provide some basic measurements of the horn they have on display? If noone has, I would be willing to pen a letter. I have my doubts but it never hurts to try. I also was looking at pics of the Bluesmobile with the speaker on top and noticed the outer cone was about the same width as the front pushbars - about 28 or 29 inches wide. I also had the same idea as JosephBlues - use standard duct work for the square piping on the back - looks like it works well from the pic he had.
TK826: There is one noteable difference I recently noticed...
The horizontal "tube" that connects the front and rear sections. That area, on the real siren, looks to be wider and shorter than the one on the Bluesmobile.
Neums: I think you people are overanalizing this speaker thing. The one on the movie car was a plastic prop. It wasn't a real airaid speaker. A real one would crush the roof in.
TK826: Of course, it absolutely was a prop siren. But, to make an accurate replica, it can only help to learn about the original.
I too had always thought a real one would crush a car roof, but like I mentioned above... with the standard base, (from what I understand) the siren weighs in at around 600-800 pounds all together.
[If a real one was used] the base would have to be removed anyway, taking even more of the weight away. So it seems that it might in fact be light enough.
I wouldn't want a real one anyway. I just want to know enough about it to create an accurate replica, at a fraction of the weight.
s there a way one could be gutted? I'm not familiar with the dynamics of how the thing operates, but losing the base has to cut down on the weight, no?
Could it be possible to support the roof for a real siren much like the support bracing in my car was for the Leslie Bee? (granted the boat was balsa wood)
[and then later adds: The picture above is deceiving. It actually is thick steel! ]
I had no idea that this particular siren was so rare. I can remember seeing them in the city, well one anyway, driving along the Queensway you could see it high up its perch. This was after The Blues Brothers came out on VHS, one of my buds and I would joke about climbing up there in suits for a picture. Of course we never did that, but you could still see it as late as '83-'84.
I've also read that the CLM Industries air-raid siren was never used in Chicago. It was probably Dan's idea to use a siren he would have been familiar with from Ottawa and Toronto. Plus, it's a kick-ass looking siren compared to other ones I've seen pics of.
I remember reading an article years ago that those sirens were being brought down, specifically the Ottawa and Toronto sirens, and no one seemed to know where they went.
Have you ever e-mailed the Diefenbunker, TK? It's a local phone call for me. I could ask about any possible specifications for the sirens. Lemme know. I wonder how ERTL came up with their specs?
I made mine out of a plastic wash tub and two plastic car wash buckets. I also used some scrap wood from a house that the were tearing down in our neighborhood a while back. The "horn" on the back is actually made from old election signs (Coroplast). I laid it out in AutoCAD and cut it out of cardboard a couple of times before I made it out of Coroplast. Some spray can primer, gray and black, some rope from Lowe's or Home Depot... It doesn't look 100% accurate to the movie, BUT I can install and remove it by myself, and the plastic horn fits in the back seat while the wooden platform fits in the trunk. My guitar case (full of my dashboard props, "wanted" posters, etc.) fits inside and the trunk closes just fine too.
I sent in the AutoCAD drawing for the horn, and a small stack of photos of my stuff assembled & disassembled about a year ago before BB Central revamped the site, but haven't been on enough lately to see if they ever posted them somewhere on here for everyone.
If anyone wants me to re-post this, I'll be glad to, but it may take me a few more days.
and Ghostbluesman responded that he has a copy of yellowrr's Autocad drawings.
S-C-M-O-D-S added this pic:
and then I asked:
Do I understand correctly that what needs to be done is to drive to 3911 Carp Road Carp, Ontario and measure this horn:
as found on this map:
What would be best to do? Take pictures "straight on", and take measurements dimensions of things as shown here:
, so that one could analyze the "straight on" pictures to calculate measurements of everything else?
And then go when the museum is open and ask if they have two other horns like this?
If all we need is the measurement in pic 3, surely we could talk someone at the museum into measuring that for us. Heck, instead of that huge drive up there, we could put an ad in the "Carp" craigslist, saying we'd pay $5 for a set of pics showing a ruler against the length/width/height of that rectangular prism below the horn.
I don't have any plans to go, but I wouldn't be against putting this location in my "bluesmobile-related places to visit" list. It's a good excuse for a (really really) long drive. Maybe I could drive up there and get a pic WITH MY BLUESMOBILE in front of the siren!
And Steam writes:
Or, you could contact the guy in Toronto who bought the air raid siren pictured here ...
I bet he'd have the measurements/specs. If you want to contact him you could try through the The siren Board forums ...
Steam: Looks like as of last summer there were still three sirens perched in Toronto ...
Quote Recently, while reading the latest edition of Spacing magazine, I was surprised to find a short article on air raid sirens in Toronto. It featured a nice Matthew Blackett photo of an air raid siren on a pole in Bayview Village Park and a short explanation of its history. What really attracted my attention was that, almost in passing, it mentioned that there are two more such sirens, one at the Harbourfront Centre, and one at the northwest corner of Dundas and Shaw near Trinity Bellwoods Park.
Post by Steam McQueen on Oct 28, 2011 18:11:17 GMT -5
The Canadian Line Materials Ltd. was a company that operated out of Scarborough in the 1950s and 1960s. CLM was later bought out and made a subsidiary of another company that has since closed, so nothing remains of CLM today.
CLM manufactured three major types of sirens, a 2 horsepower (85 db) siren, a 5 HP (105 db) siren, and a 10 HP (125 db) siren. In 1961, CLM signed a contract with the Department of Defence Production, completing delivery of approximately 2200 sirens in July 1962 (including 7% spare parts). The cost was about $2.3 million dollars at the time. The contract number was CLM DC03/501/0165/203-81-30-141.
Things of beauty, ain't they .
Specs- Height 446.0 cm, Length 231.0 cm, Width 231.0 cm Material- Steel, Brass, Rubber
Apparently no proper video (or audio) exists of a CLM siren in action. There's this vid on daTube ...
Some have speculated that what you can hear in the distance of this video from Edmonton is a CLM siren, although I have my doubts about that. Maybe plug the ol' headphones in if ya got 'em ...
I'd say that since delivery of the 2,200 sirens to the Canadian Department of Defence began in 1961 then it's quite possible that this audio clip of the "Tocsin B" emergency broadcast test, from November 1961, has portions of an actual CLM siren operating. It's from the CBC archives and you can hear it briefly at the beginning, in the middle, and a bit longer at the end ...
Hi all: I did some cruising around the BBC archives, and found the following pics of bluesmoible speakers. It's not a complete list, and I'm not even advertising that it is a correct list (that I got all the links correct), but it should be good enough to give some ideas and links for more info.
There was a CLM siren on daBay just 6 weeks ago! The Buy It Now was only $400.
from the e-bay ad:
AIR RAID SIREN MADE IN THE CANADA
Circa 1960 Cold War Air Raid Siren Manufactured for Department of National Defence Air Raid Siren manufactured by CLM INDUSTRIES
Currently there is one on display at Canada's Cold War Museum (the Diefenbunker) "During the 1950s, a nationwide network of air raid warning sirens was produced for Canada. These sirens were manufactured by CLM Industries in order to warn urban populations of a possible nuclear attack from the Soviet Union. The siren system was tested twice nationally in 1961, under the code names "Excercise Tocsin" and "Tocsin B." The network was maintained until the 1970s, when advancements in military technology reduced the Soviet nuclear missile strike time to less than 15 minutes, thus rendering the sirens unnecessary. The federal government proceeded to remove them throughout the country, but some were missed. These government-abandoned sirens can still be found today, in various states of repair. " Copied from Flickr dot com.
Post by Steam McQueen on Aug 10, 2012 23:29:26 GMT -5
Amazing! Uploaded 4 months ago.
One of the comments from earlier this week ...
This is in Calgary, AB as stated in the title. This is actually my stepdads and it's fixed in the driveway beside the house. He got it for free actually, since it was rusting away in a field after cut down years back. He's planning on getting 220v hooked up properly to have both tones run properly. It'll probably be a bit before we get a video up of that, the mans got more projects than he knows what to do with! Haha
- So what you hear is not the complete and true sound, yet, but it's still incredible. The uploader has promised more video. If dude runs that siren full tilt that close to the house he'll blow shingles off the roof and the fish inside will die, lol.
...So what you hear is not the complete and true sound, yet, but it's still incredible. The uploader has promised more video. If dude runs that siren full tilt that close to the house he'll blow shingles off the roof and the fish inside will die, lol.