sparky Posted August 23, 2009 Posted August 23, 2009 Having problems getting these to work anyone have any luck
skyisthelimitinc Posted August 23, 2009 Posted August 23, 2009 (edited) Having problems getting these to work anyone have any luck Well i cant say i had any luck yet,(about to try) i made me some 20mm crossettes and gonna try a gelatin ampulle with a small fuse down the -2mm- cavity and use 0.3-.5 gr of AP/Al flash, and test it before next weekend, ill post the result on youtube anyways;) edit: its a 1" crossette pump(25mm), and ill use Pot. perc./Al flash, not Ammonium as said Edited August 23, 2009 by skyisthelimitinc
sparky Posted August 24, 2009 Author Posted August 24, 2009 Well i cant say i had any luck yet,(about to try) i made me some 20mm crossettes and gonna try a gelatin ampulle with a small fuse down the -2mm- cavity and use 0.3-.5 gr of AP/Al flash, and test it before next weekend, ill post the result on youtube anyways;) edit: its a 1" crossette pump(25mm), and ill use Pot. perc./Al flash, not Ammonium as said 3/4'' amd above are not too difficult to dial in my 3/4'' use quick visco the whole length with 70/30 perc/alum filled too the top 2 wraps of kraft paper for a 1'' flash should work also granulated whistle if you dont want the bright flash yhose little 1/2'' ones are a real pain in the nutz to get figured out
Xtreme Pyro Posted August 24, 2009 Posted August 24, 2009 Having problems getting these to work anyone have any luck I know im not in a position to moderate, but I don't think this belongs here this is the Cake/Mine Competition thread. This belongs in the Newbie Questions thread or in the random thread I would think.
TheSidewinder Posted August 24, 2009 Posted August 24, 2009 Correct. Moved topic to Newbie Questions.
Mumbles Posted August 25, 2009 Posted August 25, 2009 You're going to have to get something hot in there for them to work properly. I believe some have had success with 50/50 Sr(NO3)2/Mg in small shot holes. Dark flash may also be an option. They snap pretty good in my 3/4" crossettes, so it might also do the trick with a bit smaller sizes. I used 1:1 Chlorate:Sb2S3. Yes, the mix is rather sensitive.
sparky Posted August 25, 2009 Author Posted August 25, 2009 You're going to have to get something hot in there for them to work properly. I believe some have had success with 50/50 Sr(NO3)2/Mg in small shot holes. Dark flash may also be an option. They snap pretty good in my 3/4" crossettes, so it might also do the trick with a bit smaller sizes. I used 1:1 Chlorate:Sb2S3. Yes, the mix is rather sensitive.Have beem experimenting mith perc magnal flash granulated they crack pretty good just have to dial in the amount i think
RackEMnot Posted January 5, 2012 Posted January 5, 2012 I have the 1/2" cruciform Walter crossette pump and in his instructions it states that I should use magnesium flash 50:50 mag:pot perc. I am reluctant to try it due to danger of this exotic flash. Is it advisable to coat the magnesium in dichromate when making this type of flash?Anyone used this tooling? Any tips?
Peret Posted January 6, 2012 Posted January 6, 2012 1/2 inch is really small - it probably needs the energetic flash because so little of it fits in the cavity. I can't think of any other reason, since magnesium flash is insanely bright and may overpower the comet light. Maybe you could try it first with 70:30 aluminum flash, using perc milled as finely as you can manage. You mainly need to coat Mg when there's some risk of it getting damp, or when there's ammonium perchlorate about. If you dry-mix it and put it in well dried comets, and you store them with desiccant, maybe you don't need to bother. On the other hand, why take a chance?
RackEMnot Posted January 6, 2012 Posted January 6, 2012 (edited) 1/2 inch is really small - it probably needs the energetic flash because so little of it fits in the cavity. I can't think of any other reason, since magnesium flash is insanely bright and may overpower the comet light. Maybe you could try it first with 70:30 aluminum flash, using perc milled as finely as you can manage. You mainly need to coat Mg when there's some risk of it getting damp, or when there's ammonium perchlorate about. If you dry-mix it and put it in well dried comets, and you store them with desiccant, maybe you don't need to bother. On the other hand, why take a chance? Cheers for the advice. I have tried 70:30 flash and had jetting occur everytime. I am going to try with this flash again but I will try and glue the end disc better. Perhaps White glue is not the best.I also don't know if coating the magnesium in the mag flash reduced it's power or made it safer from static. Edited January 6, 2012 by RackEMnot
dagabu Posted January 6, 2012 Posted January 6, 2012 Add another paste wrap and an extra thick disk on them and use pot perchlorate and antimony trisulfate for the break. The smaller crossettes can be tricky to break.-dag
RackEMnot Posted January 9, 2012 Posted January 9, 2012 Add another paste wrap and an extra thick disk on them and use pot perchlorate and antimony trisulfate for the break. The smaller crossettes can be tricky to break.-dag Thanks I will also give this a go. If I have success I will post results.
WSM Posted January 16, 2012 Posted January 16, 2012 (edited) Have beem experimenting mith perc magnal flash granulated they crack pretty good just have to dial in the amount i think It sounds like you may want to try "hyperflash", my pet name for perchlorate/magnesium flash where the potassium perchlorate ball-milled with Cab-O-Sil and the magnesium is 325 mesh and dichromate treated, dried thoroughly and then sieved fine to break up the lumps. After the two ingredients are prepared, carefully mix them on a sheet of paper and store it in a safe container. To describe hyperflash, if you put a tiny amount on a flat piece of paper and touch it with a lit punk, it'll burn with a "pop" sound and hardly scorch the paper. It's amazingly fast and hot stuff. It burns so fast I doubt you'll see the bright flash you'd normally expect with courser magnesium. In fact I doubt you'll notice any flash at all. If you can get 325 mesh magnesium, make a gram of 50:50 and see what I mean... WSM Edited January 16, 2012 by WSM
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