|
Post by Puma1 on Jul 3, 2013 17:40:35 GMT -5
I saw that more often than not cold smoke grenades are allowed at events. What is the real difference between cold and hot smoke? I'm working on a smoke grenade design, and I've found a way to make all of the actual reaction remain inside the shell. There's no external fuse, and the hopes are to keep the heat output to ~ 90 degrees. I've made 3 succesful models, and they've worked well. Is this possible to use at some events? It is using the sugar/kclo3 method, and a spring operated pull pin. I'm aware that you will need to check them out before I use them... But your thoughts? *Moderators, this is posted here because it is a question to the event hosts, please move it as you wish. I wasn't sure if I should put it here or in Airsoft Discussion. Thanks
|
|
|
Post by Pagan on Jul 4, 2013 7:49:47 GMT -5
I saw that more often than not cold smoke grenades are allowed at events. What is the real difference between cold and hot smoke? I'm working on a smoke grenade design, and I've found a way to make all of the actual reaction remain inside the shell. There's no external fuse, and the hopes are to keep the heat output to ~ 90 degrees. I've made 3 succesful models, and they've worked well. Is this possible to use at some events? It is using the sugar/kclo3 method, and a spring operated pull pin. I'm aware that you will need to check them out before I use them... But your thoughts? *Moderators, this is posted here because it is a question to the event hosts, please move it as you wish. I wasn't sure if I should put it here or in Airsoft Discussion. Thanks If they work with no external flame at all and the owners of the field agree to allow them, I can't imagine not being able to use them. With that being said, I personally would need to see a test done on concrete away from any flammable material with the field owners present. Any sort of flame would make them unusable at No Limits.
|
|
|
Post by Puma1 on Jul 4, 2013 8:46:30 GMT -5
Fair enough. All I'm using is an internal sparking cap, so it's no 'real' flame. I'll be making some prototypes for testing and bring them out.
|
|
|
Post by Knief on Jul 4, 2013 12:17:41 GMT -5
When we were running games at No Limits, they told us that no smoke was allowed ever. They had allowed it previously, but at another field somewhere else in the country, some kid blew his face off (or burned himself, whatever) when a cold burning smoke popped on him. From that point on, they said no more smoke at their field. I don't know if that's changed in the last year or two, though. It's worth asking.
That said, I think that homemade pyro is always a huge liability, and would not allow it at a Hellfish run game.
|
|
|
Post by Tank on Jul 4, 2013 15:05:41 GMT -5
When we were running games at No Limits, they told us that no smoke was allowed ever. They had allowed it previously, but at another field somewhere else in the country, some kid blew his face off (or burned himself, whatever) when a cold burning smoke popped on him. From that point on, they said no more smoke at their field. I don't know if that's changed in the last year or two, though. It's worth asking. That said, I think that homemade pyro is always a huge liability, and would not allow it at a Hellfish run game. Pagan already checked with No Limits, cold smoke is good to go.
|
|
|
Post by Squirrel on Jul 4, 2013 18:01:34 GMT -5
Just be very careful with the KClO3+sucrose. We had a pretty serious accident with an improper mixture in my college chemistry lab. Before you go saying you know what you're doing, this was the professor and TA demonstrating the experiment when the accident occurred.
They had the mixture in a 5ml test tube and it shattered the tube and ignited some paper material on the lab top.
What are you doing to contain combustion?
|
|
|
Post by Puma1 on Jul 4, 2013 18:22:59 GMT -5
The pull pin is pulled, forcing a metal piece to hit a spark plate, and then a fuse. The fuze itself is contained until near the end, where it pokes out into the mixture. Squirrel, I've seen a lot of bad stuff happen too, but I'm confident (but not cocky) that I can do it safely. Another step I'm doing to slow/ drob the combustion heat is to add baking soda, causing more impurities, and therefore less pure fuel. The actual combustion part will be inside a reinforced (layered) cardboard tube wrapped first in newspaper, then electrical tape. The layering requires it to heat the air between the cardboard, while the paper is naturally a good insulator, along with electrical tape. The bottom of the cardboard tube will be covered by the same thing, with a small hole to allow for smoke to escape. There is also another layer On top.
Any problems so far?
|
|
|
Post by Squirrel on Jul 4, 2013 18:30:09 GMT -5
Seems good in theory. I have two years of professional pyrotechnics experience.
I'm just always skeptical of everything, since I've seen stuff catch on fire that shouldn't, like a cold spark indoor firework.
I'll check out your smokes on Sunday.
|
|