259 replies to this topic

[pihop]

Those 6" were excellent!!!. Great work pihop. How long have you been building shells?....Oh, and Details please

Thanks man!
I'v built around 6 4" paper shells and maybe 10 3" plastic shells before these so I'm still a novice.

The 6" had BP on hulls and 2g flashbooster as break. Pasted with 20 layers of gummed tape.
Ring stars were Buell red to white strobe (strobe ruined by nitrate leeching into core). Glitter stars were C6 with 10% titanium unfortunately most blown to pieces in first shell and possibly in 2nd as well.

[Bonny]

Here's a 3" can shell I fired last week. The comp was Pretty green flames' "silver cascade" posted on APC. The silver looked much better than in the video, but I was quite pleased with the shell. Burst was BP coated vermiclite and whistle booster.

http://www.youtube.c...F59c&hl=en&fs=1

Edited by Bonny, 25 August 2008 - 06:21 PM.

[Pretty green flames]

Nicely done Bonny, step prime?

[Bonny]

Nicely done Bonny, step prime?

Thanks PGF. I made the stars to get rid of some 100mesh Mg I had around and I liked the result.
I step primed *approx* 75/25, 50/50, then NC/BP slurry mixed thin enough to dip the stars in the slurry and then into some granulated BP.

[Pyrogeorge]

20mm comets

[Sambo]

Heres my ti/al fountain, it is 2" id by 16" long, 15mm choke.
Decorated in the style of Clarks giant steel fountain lol
I've not fired it yet ill get a video when i do.

Heres some pictures

Edited by Sambo, 25 August 2008 - 03:22 PM.

[Bonny]

Heres my ti/al fountain, it is 2" id by 16" long, 15mm choke.
Decorated in the style of Clarks giant steel fountain lol
I've not fired it yet ill get a video when i do.

It definitely looks very nice! Hope it performs equally well. I'll be waiting for the video.

[Sambo]

I set off the fountain tonight it went as planned. The video is quite deceiving it reached about 15ft, well Here it is anyway..

edit - i've sorted the vid out a bit it still isn't great quality but rotated and title added

Edited by Sambo, 27 August 2008 - 06:36 PM.

[Sambo]

i fired This tonight, it was a 4" gummed tape shell with 10g slow flash booster, my first colour changing shell. What do you think?

Edited by Sambo, 29 August 2008 - 08:17 PM.

[digger]

i fired This tonight, it was a 4" gummed tape shell with 10g slow flash booster, my first colour changing shell. What do you think?

Very Nice. What size were the different layers of the stars? and what formula did you use?

D

Edited by digger, 29 August 2008 - 08:42 PM.

[Sambo]

The blue cores were 7mm Pihko KP and CuO blue then the layer of small dragons eggs (<60 mesh) were rolled along with si prime to about 10mm, then win 20 up to about 14mm. The blue was much better irl.

Edited by Sambo, 29 August 2008 - 08:50 PM.

[digger]

Interesting that seems to be a pretty fast blue, I have been playing with blues at the moment so I am interested in the results people are getting.

[Sambo]

yeah the blue is quick. Have you got any good blues using potassium perc, ammonium perc is way to expensive for me.

[wjames]

http://www.youtube.com/v/dCLtS_XPQww


cue 300g kno3/sugar/sulf/char smoke b()mb - pretty violent.

i'll excuse myself in the first part for a double fuse....but the last one i made failed to ignite with a single fuse. i was unhappy with the visco burn rate too.

[digger]

yeah the blue is quick. Have you got any good blues using potassium perc, ammonium perc is way to expensive for me.

I have been trying all sorts of blue formulae and variations thereof. I have not tried any of the older formula with paris green, nor have I tried any formulae with copper oxychloride as I don't have any (yet). But I have tried a number of AP formula and been underwhelmed with them, the copper benz / AP formula was respectable though.

Most of the perc based blues that I have tried have been very similar in colour saturation, I do have one that is starting to show some promise. The most interesting formula that I have been working on is a chlorate blue with copper benz, copper carbonate a heavy dose of parlon. This seems to work a little differently by producing a hard core that does not disintegrate and allows the escaping gas to burn with a very deep blue, but this formula needs some more work before it is perfected because if the core lights then an orange flame is produced.

Edited by digger, 29 August 2008 - 11:05 PM.