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Cut-aways and dissected pyrotechnic devices


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#16 dr thrust

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Posted 19 April 2010 - 06:43 PM

yep i understand there rigorously tested, but yer know "sh** happens" and misfires occur i nearly got wiped out by a pin wheel! i lit it stood a couple steps back... BANG!!.. NOTHING LEFT ! but a pin :o
i'll just remenber to lite and "run like the wind"

Edited by chris m, 19 April 2010 - 07:52 PM.


#17 rocketpro

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Posted 19 April 2010 - 07:03 PM

-------

Edited by rocketpro, 06 August 2010 - 11:04 AM.

Who tests the tester.


#18 phildunford

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Posted 19 April 2010 - 07:50 PM

A certain major UK display company had to send all it's imported 3" shells back to China recently, because they were breaking at random heights...

Sh** does indeed happen!
Teaching moft plainly, and withall moft exactly, the composing of all manner of fire-works for tryumph and recreation (John Bate 1635)
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#19 pyrotechnist

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Posted 19 April 2010 - 11:13 PM

Other words dont trust imports lol and use good old English produce, I wish!
fireworks is my aim setting of is the game

#20 dr thrust

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Posted 26 April 2010 - 07:58 PM

well opened it up anyway, the propellant grain is black powder based no resin binder, weighing in at 23g( minus the clay nozzle)
interestingly enough i was expecting it to be a simple end burner, but indeed it had a core 40mm in depth, by 4mm dia, fused its full length
another interesting point was at the other end in which they had dispensed with the clay end-plug and the problem of engineering a pass-fire in to it in the production process, by using hard clay flakes mixed with the blackpowder,making in affect consumable end-plug, clever! anyways here's the pics so you can see what im bangin on about! Posted Image
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#21 Vic

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Posted 26 April 2010 - 08:57 PM

I would think the bp clay mix would act like a cheap and easy delay.
Freud. Artists, in this view, are people who may avoid neurosis and perversion by sublimating their impulses in their work.

#22 rollie

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Posted 29 May 2010 - 10:51 PM

I would think the bp clay mix would act like a cheap and easy delay.


On pyroguide it does state that the Chinese commonly use clay mixes as delays

#23 dr thrust

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Posted 29 May 2010 - 11:09 PM

clever stuff indeed, a wonder how one would go about producing the clay flakes?

#24 pyrotechnist

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Posted 31 May 2010 - 10:29 AM

Instead of clay use sawdust, dried grass, or for the flakes of clay I assume they press blocks of clay and break them with a hammer. Maybe the clay is bound with wax to keep its form.
fireworks is my aim setting of is the game

#25 CCH Concepts

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Posted 31 May 2010 - 07:01 PM

could you not grate the clay with a cheese grater?




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