34 replies to this topic

[dr thrust]

whats the president for fixing a comet to a rocket stick to help the "tail" does it have a name ive tried a Lancaster comet on the top of a ball shell rocket , but it was a bit fiddly adding the quick match

[paul]

EDIT:

Lol, just had a look how old that thread is... Mods, please delete my post

Edited by paul, 24 February 2008 - 08:51 PM.

[dr thrust]

well this topics a bit "dead in the water" i found the answer that comet are indeed fixed to rocket sticks, so im moving to cavity comets, and at the moment ive got a few dozen 25mm tigertails dying.. right! would it be prudent to put a paper disk over the end of the comet covering cavity to protect the core of star comp so it doesn't burn up as fast, so that you get a good colored star at the end instead of both burning simultaneously?, yeah playing catch up with all you guys at the moment

[Pretty green flames]

Putting a disc over the cavity won't do much as the walls will burn up pretty quickly, you need to paste the comet with 2 or 3 turns of paper leaving a small portion on the comet at the bottom unpasted. Basicly you need to paste them so they burn in an end burner fashion igniting the colour core at the end.

Though you may want to skip pasting, when you've got 200 or so 18mm ones to do

[KarlosH]

Nice formula: Fuch´s crackle (pop glitter)

original:
Potassium Nitrate 44.88
Sulphur 14.28
MgAl -200 mesh 14.00
Antimony Trisulphide 10.5
Airfloat Charcoal 8.84
Copper (II) Oxide 4.5
Dextrin 3

modification for NC
KNO3 45
S 16
pine charcoal 9
Sb2S3 black 11
CuO 5
Coarse magnalium 14
8 - 10% NC paste for binding

Look like here: http://n-joy.cz/vide...qjvuvpe94nyc5j/
NC paste is important for loud crackling.

Edited by KarlosH, 11 August 2008 - 08:31 AM.