1569 replies to this topic

[paul]

By the way guys. For my 6" shells im planning on using BP as break, will this be strong enough to break the shell HARD if I paste about 30 layers or more?
For my 4" bow tie shells I'v used BP on hulls with a 2g flashbag with great results. Will a 2 or 3g flashbag overbreak the 6"?
I'm looking to get as good break as in the first and last ones in my earlier video ( http://uk.youtube.co...h?v=aPLszMNv7yY ).

If you´ve got good blackpowder (which I assume you got, looking at the lift charge...) bp on rice crispies
or whatever carrier is sufficient! I don´t exactly know what pasting method you use, but I´ve used the 3-strip-method
with much success on my 6" shells! Always used between 12 and 15 layers of relatively thin kraft, soaked with wheat-glue.
hat equals the double ammount of layers then, that is 24 and 30 layers.

Of course a 2g flash booster centered in your shell will create a rounder burst. just don´t use too many layers of kraft!

[pihop]

Pihop: You need only good lift! Stars are nice, mainly double-color stars. Nice.
Karel.

I don't really understand what you mean, sorry.

If you´ve got good blackpowder (which I assume you got, looking at the lift charge...) bp on rice crispies
or whatever carrier is sufficient! I don´t exactly know what pasting method you use, but I´ve used the 3-strip-method
with much success on my 6" shells! Always used between 12 and 15 layers of relatively thin kraft, soaked with wheat-glue.
hat equals the double ammount of layers then, that is 24 and 30 layers.

Of course a 2g flash booster centered in your shell will create a rounder burst. just don´t use too many layers of kraft!

Normally I use the 3-strip method using gummed paper tape (too lazy to make real paste and whatnot). If I remember correctly my paper tape is equal in strengt to 70lb craft paper.

I think I'm going for a 2g flash bag.
Will 26 (13) layers be overkill with the booster?

EDIT:
Some pictures.
http://pyrotechnics....es/pict4872.jpg
http://pyrotechnics....es/pict4873.jpg
http://pyrotechnics....es/pict4874.jpg
http://pyrotechnics....es/pict4876.jpg
http://pyrotechnics..../pict4877_1.jpg
http://pyrotechnics....es/pict4878.jpg

Edited by pihop, 26 February 2008 - 11:23 AM.

[KarlosH]

Hallo. I need youre help. Can you write me a making proces for twisted paper, pasted with black powder? Shimizu described this in his book, but he mention, that instructions are in the Lancaster´s book. He recomending to use in hummers, and bickford fuses(better ignition).......
Thanks.

[Richard H]

Does anyone have a copy of the brocade video posted by Heinz? Link below sadly not working...

http://www.8ung.at/h...er_Kugel_02.mpg

[BrightStar]

I managed to escape to the Cornish countryside over Easter to test some shells :



I fired a 3" Veline Orange, 3" Red white and gold, 4" paper Electric Magenta peony and 5" paper Slow Gold brocade.

The weather was foul, with a blustery wind straight off the Atlantic.

The 3" shells were good - it seems a hybrid of plastic with 4 layers of kraft pasting works well with good symmetry given a substantial whistle boost.

The 4" magenta peony was my first real failure. It was based on a dextrin bound strontium nitrate comp (Freeman KP MgAl Purple) which is a beautiful colour on the ground. I pumped 1/2" stars and they dried fairly easily, primed with a hot Si prime. Unfortunately it was pouring with rain while I closed the shell and wet pasting the paper hemis can't have helped - not one of the stars ignited in the air

The 5" slow gold brocade with 3/4" pumped stars was fun. The strong wind scrambled the burst but the hang time was at least 25s and it burnt almost to the ground. I used cheap charcoal and the wrong grade of Ti but ultimately it seemed to work. Here's the vid:

5" Slow Gold brocade in high wind (Divx avi 3,371 KB)

Edited by BrightStar, 31 March 2008 - 11:06 AM.

[digger]

Nice shell. I like the last comment on the video "Why is there a Police car"

[ener]

My first cilindrical shell, it's a 4 inch "farfalle shell" with 11 inserts.
Next time i will ad a collored pistil in it.

[portfire]

Once again, an excellent exampe of a farfalle shell. The break was superb, exellent symmetry

PLEASE!! We'd all love to see more details and build pics on your next shell ......I love farfalle shells

Dean

[Sensei]

Ener, can you give some information or photos?
Great job

[ener]

I used shimitzu's burstcharge an fulcanelli's technique for this shell.

I do not have many pictures, only when the shell is closed or finished.

Is there a way to upload some pictures on this forum?

[portfire]

Is there a way to upload some pictures on this forum?

create an account with 'imageshack' it's free

[pyrotrev]

The 5" slow gold brocade with 3/4" pumped stars was fun. The strong wind scrambled the burst but the hang time was at least 25s and it burnt almost to the ground. I used cheap charcoal and the wrong grade of Ti but ultimately it seemed to work. Here's the vid:

5" Slow Gold brocade in high wind

Joseph - I can't seem to play the vid with either WMP or Quicktime - was it made using a special codec?

[pyrotrev]

My first cilindrical shell, it's a 4 inch "farfalle shell" with 11 inserts.
Next time i will ad a collored pistil in it.

Very good shell - the inserts are perfect!! are the holes in your ones in the middle or end of the tubes?

[ener]

In the middle pyrotrev.

[KarlosH]

Ener, nice composition:-) Which kind of composition was pressed in the farfalle tubes? BP with Ti? Karlos.
Nice farfalle shell.....hmmmmmm