Death-trombone of Marseilles – fact or fiction?

[kerick]

Still looks like something from a comic book!

[MaxHeadroom]

Looks, like you like my idea...!

I feel honoured!

Norbert

[MaxHeadroom]

Hmmm..., I was curious and wanted to be sure, so I've taken my caliper to check my StuG.
The scale is 1:76!!!
So, I have to keep this in mind to align the whole project.

Norbert

[MaxHeadroom]

Wish you all a happy 2015!

Here are some vehicles from my scrapyard, I will use as the bases for the trombone-train:

The cabin on the back of the UNIMOG will changed a bit to be the cover for the generator.

And this I've made of the frame of the flatbed-US-truck with the soft-top:

This will be the trailer for the generator and the Diesel/Water tank.
On the right you see the upper frame for the trailer's top structure.
The wheels are from a russian/sovjet BTR 152.

Norbert

[MaxHeadroom]

About the generator's trailer.

Here a better view of the lower frame:

I'd added a pressure-tank for the air-brakes (red) but I have to add the plug for the trombone-trailer's towbar and some wires/cables and hoses before painting.

The reversed platform and it's frame:

I'd tried to make the view of wodden planks and added a close to reality built frame. The platform is 2.5 meters to 5 meters because...

...around the mobile power plant:...

(Sorry for the lack of total optical sharpness.)
... I need a walkway for the engineer(s)!
Aside the cover/hut the walkway is 50 cm and at the rear end 1 m.
What to do:
-adding one or two exhaust-pipes with silencers,
-applying some hoses, tubes, cables and things like that,
-maybe implant 1 or 2 meshed holes for cooling-fans into the cover's roof (or anything else),
-mounting a ladder to climb on the platform from the rear,
...
-and painting, of course!

Norbert

[maxmwill]

As also used by the Japanese

http://en.wikipedia.org/wiki/War_tuba#mediaviewer/File:Wartuba.jpg

These ones are locators - used for detecting aircraft. The Germans and British also had sound locators.

Ah yes, but were they on sound footing, was the theory behind this a sound theory? And what about PDQ Bach's Art of the Ground Round?

And what happened in the Puget Sound?

[MaxHeadroom]

Now some words to the trombone-trailer.

I've taken the gun-truck (reply-post 18, pic 1) and stripped it to the frame. The rear part with the fenders for the twin axles was cutted off, got a towbar and became the front-end:

The red barrel is the pressure tank for the air-brakes and the white one is the tank for the hydraulic-oil.

Next step was to make the rest of the frame a bit longer, adding a kind of "step" and building the frame for the platform, where the solenoid of the speaker with it's cover will find it's place later:

Lenght of the trailer (without the tow-bar) will be scaled 8.5 meters, width: 2.5 meters.

Here a view of the trailer with the platform:

You see, it's movable.
The platform will be made of welded steel-plates, 'cause of the high load/weight of the solenoid.
That's also, why I have twin-axles with in total 8 wheels.
The rear end only needs a single axle, because the speaker's funnel is not really very heavy.

Hope, you like!

Norbert

[maxmwill]

The pics look very nice.

Yes, they might be simple right now, just frames with some wheels and a few other things, but even the simplest of objects can look very nice, if they are carefully crafted, and are to part of a larger whole, such as this Trombone.

But, as I'm typing this, I begin to have a silly thought, punny, it could be.

Blue Man Group, a musical group that play satirical musical numbers, with each of the four players having a silly blue painted heads, have a music video of the Drumbone:

https://www.youtube.com/watch?v=np4Ug8nThaE

They are actually quite good

[MaxHeadroom]

Thx a lot.

Might be simple..., yes... might be, but remember the scale: 1:76.
It's really small-work.

Norbert

[TsrJoe]

i recall the 'Mythbusters' episode mentioned, the candidate was placed in the middle of a ring of speakers each pointing inward with the amplitude raising in a linear fashion (ie not pulsed between two frequencies), a very different system and mode of operation from those successfully tested decades previously  indeed I would have expected anyone outside the circle to feel more of an effect than the chap in the middle if they were susceptible ?

cheers, Joe

[MaxHeadroom]

Thinking of the construction of the trombone's funnel, I was facing a dilemma:
The funnel's size.
The open end (the rear end) should have four to four meters in square.
This would be impossible for the transport!
Neither by train, nor by road transport.

I decided to build both versions!

This is what I did to prepare:




Now, these are the parts for the transport version:


And these are for the in-action version:


Norbert

[zenrat]

What if the funnel was inflatable?

[Gondor]

What if the funnel was inflatable?

To inflate an object meant that the object must be made out of a flexible material. Flexible materials do not make good reflectors as they have a tendency to absorb sound and radio waves.

Gondor

[maxmwill]

Well, could it be made collapsible? Such as of interlocking plates, or of sections, each one of which is comprised of plates and extended, and then each section had alignment pins or bushings of some sort, each floating in an over size hole(to allow a certain amount of movement during the erection process, so as to facilitate erection and dismantling relatively quickly as well as in conditions where extra light is not quite available. This concept is similar to how the Bf110 was constructed, enabling smaller firms to mass produce parts more easily, without tight tolerances, but allowed easier final construction of the completed machines, in order to help boost production rates).

I'm not sure how you might visualize that, or how to execute it, but this is another way to get around the space difficulty.

[Gondor]

Well, could it be made collapsible? Such as of interlocking plates, or of sections, each one of which is comprised of plates and extended, and then each section had alignment pins or bushings of some sort, each floating in an over size hole(to allow a certain amount of movement during the erection process, so as to facilitate erection and dismantling relatively quickly as well as in conditions where extra light is not quite available. This concept is similar to how the Bf110 was constructed, enabling smaller firms to mass produce parts more easily, without tight tolerances, but allowed easier final construction of the completed machines, in order to help boost production rates).

I'm not sure how you might visualize that, or how to execute it, but this is another way to get around the space difficulty.

Collapsible sounds far more practical and is the kind of thing that would have been done.

Gondor