About
Community
Bad Ideas
Drugs
Ego
Erotica
Fringe
Society
Technology
register | bbs | search | rss | faq | about
meet up | add to del.icio.us | digg it
Go Back   Community > Sciences > Backyard Ballistics
Reload this Page Best Flash Mixes?
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Backyard Ballistics This forum is dedicated to the safe teaching and responsible handling of high and low explosives. You will not find any information on how to make "bombs" or any such device(s) . Backyard ballistics will teach you the science and the art of pyrotechnics and how to manufacture and use explosives/pyrotechnics safely and responsibly. Backyard ballistics is also a haven for rocketry and pneumatic cannons. All information contained within this forum is for educational purposes ONLY. Totse does not accept responsiblity for any incident involving the use of the information contained within this forum.

Closed Thread
 
Thread Tools Display Modes
  #1   Add Aaron_Ess to your ignore list  
Old 2006-06-02, 21:50
Aaron_Ess Aaron_Ess is offline
Regular
  
Aaron_Ess is an unknown
Default
I've done KNO3\Su and BP and Ive decided to try flash powder. From my research I've found several different variations on it, KClO4\Al, KClO3\Al, KNO3\Mg\S, etc.

Anyways I was wondering, based on your personal experience, what the "best" mix is, based on effectiveness, sensitivity, cost and ease of procurability. thanks.

[This message has been edited by Aaron_Ess (edited 06-02-2006).]
  #2   Add Spatula Tzar to your ignore list  
Old 2006-06-02, 22:02
Spatula Tzar Spatula Tzar is offline
Regular
  
A constant state of depression Spatula Tzar is an unknown
Default
The industry standard is KClO4 + Al. Mg will be a bit more powerful.
  #3   Add Declan to your ignore list  
Old 2006-06-02, 22:22
Declan Declan is offline
Regular
  
Decland Declan is an unknown
Default
Wait, quick question. The oxidizer in KClO4 is the Cl, right? Because the O's are more electronegative, and get the electrons when it splits, leaving Cl+7? Then the Cl+7 oxidizes the neutral metal like Al or Mg, right?
  #4   Add smokeymcpot420 to your ignore list  
Old 2006-06-02, 22:41
smokeymcpot420 smokeymcpot420 is offline
 
Midwest USA smokeymcpot420 is an unknown
Default
.........
  #5   Add Mokothar to your ignore list  
Old 2006-06-02, 22:42
Mokothar Mokothar is offline
Moderator
  
Heresy, I live in Heresy Mokothar is helpful Mokothar is helpful Mokothar is helpful Mokothar is helpful Mokothar is helpful
Default
It doesn't really get to +7, I don't know the exat reaction mechanism, but yes, the chlorine atom oxidoses the Al or Mg.

Now, It could be:

KClO4 → KCl + 2O2

It first oxidises the oxygen, and then the oxygen oxidised the Al/Mg.

Or there could be a direct electron transfer between the KClO4 and metal ... don't ask me how tough.
  #6   Add Aaron_Ess to your ignore list  
Old 2006-06-02, 23:00
Aaron_Ess Aaron_Ess is offline
Regular
  
Aaron_Ess is an unknown
Default
I heard that KClO3\Al and KNO3\Mg\S were quite a bit more sensitive than KClO4\Al, but I don't know how I would get any potassium perchlorate, so specifically how do KClO3\Al and KNO3\Mg\S compare in effectiveness and sensitivity

Also, would KNO3/Al work?



[This message has been edited by Aaron_Ess (edited 06-02-2006).]
  #7   Add smokeymcpot420 to your ignore list  
Old 2006-06-02, 23:23
smokeymcpot420 smokeymcpot420 is offline
 
Midwest USA smokeymcpot420 is an unknown
Default
Its not flash but I think I'll post it. I mixed a bunch of AL(Very low mesh), Steal(Very low mesh), PN, and Sugar togther and lit it with some fuse. It dident light, so I added some more PN and Sugar. Then, It lit and put off about the same amount of smoke as normal SM but had a lot less flame(Amolst none) and burned a lot slower. When it was done, there was a molten black slurry pile. I'll do look at it in awhile when its cool.
  #8   Add Spongebob to your ignore list  
Old 2006-06-04, 12:33
Spongebob Spongebob is offline
Regular
  
Spongebob is an unknown
Default
Quote:
quote:Originally posted by Spatula Tzar:

The industry standard is KClO4 + Al. Mg will be a bit more powerful.
A bit more powerful doesn't cover it. I had some in a thick cardboard tube that was not plugged at the top and the blast was still sufficient to obliterate the tube with a report that left my ears ringing.
  #9   Add FullMetalJacket to your ignore list  
Old 2006-06-04, 13:14
FullMetalJacket FullMetalJacket is offline
Regular
  
Perth, Western Australia FullMetalJacket is an unknown
Default
Remember that any comp with S will be very friction sensitive.
  #10   Add Mokothar to your ignore list  
Old 2006-06-04, 13:55
Mokothar Mokothar is offline
Moderator
  
Heresy, I live in Heresy Mokothar is helpful Mokothar is helpful Mokothar is helpful Mokothar is helpful Mokothar is helpful
Default
Quote:
quote:Originally posted by FullMetalJacket:

Remember that any comp with S will be very friction sensitive.


like Zn/S? KNO3/C/S? KMnO4/S/Al?

Just because sulpher is incompatible with certain chemicals doesn't mean that all sulpher containing compositions are sensitive.
 #11 
Old 2006-06-04, 14:16
hell fire hell fire is offline
Regular
  
Default Re: Best Flash Mixes?
The only problem with KNO3/Mg is that KNO3 is hygroscopic and Mg can ignight when it comes in to contact with moisture. Mixing the two could cause some problems. Just keep it dry and store it in an air tight container.

Al flash is much safer than Mg flash.
 #12 
Old 2006-06-04, 14:17
nosfera2 nosfera2 is offline
Regular
  
Default Re: Best Flash Mixes?
Flash powders I've made and a few comments:

1.KClO4/Al- This is the grand master of flashes. I used 2 micron flake Al so you know it was fast. And when I had chinese air- milled perc it was ridiculous. That perc flowed so easy it was orgasmic. The two components practically mixed themselves.

2.KNO3/S/Al- Heh, this comp was unusually difficult to light, but that was probably because my KNO3 was a little coarse compared to the other two components. It didn't light until a few seconds under a blow torch! When it did light though, it burnt faster than ,say, some fast BP. So it's a good alternative. Grind your KNO3 down to a fine powder and it should work quite nicely.

3.KNO3/Mg- Due to the large particle size of the KNO3 and Mg I used, I cannot say anything conclusive about his comp. It burned slow like crudely made BP. I'll have to try it again myself with finer powders.

Sensitivity- Keep moisture out of 2 and 3 at all costs. But you should keep moisture out all your comps. Who the hell lets their comps get wet/abosrb moisture freely? Don't store mixed comps either. There's no reason to, it's stupid.



[This message has been edited by nosfera2 (edited 06-04-2006).]
 #13 
Old 2006-06-04, 14:29
FullMetalJacket FullMetalJacket is offline
Regular
  
Default Re: Best Flash Mixes?
quote:Originally posted by Mokothar:



like Zn/S? KNO3/C/S? KMnO4/S/Al?

Just because sulpher is incompatible with certain chemicals doesn't mean that all sulpher containing compositions are sensitive.

Hah. Good point. I was just thinking about the most obvious comps.
Closed Thread

« Previous Thread | Next Thread »

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode
Hybrid Mode Switch to Hybrid Mode
Threaded Mode Switch to Threaded Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump

 
To the best of our knowledge, the text on this page may be freely reproduced and distributed.
 

totse.com certificate signatures
 
 
About | Community | Bad Ideas | Drugs | Ego | Erotica | Fringe | Society | Technology
Hot Topics