Maxim Posted December 23, 2015 Share Posted December 23, 2015 Let us publish our NYE tests here everyone! Here is D1 on NaNO3. Hand pumped, used 7% of water!http://www.youtube.com/watch?v=1MOnUckpTn0 2 Link to comment Share on other sites More sharing options...
lloyd Posted December 23, 2015 Share Posted December 23, 2015 That's a nice color, and that glitter looked nice.You can get the same color by adding sodium bicarbonate to a potassium nitrate formula. The advantage is that sodium bicarbonate is a little hygroscopic, but not deliquescent, as is sodium nitrate. Stars made with the latter just will NOT keep -- pretty much period. If you want stars that will keep well, you need to consider a different sodium source. Lloyd Link to comment Share on other sites More sharing options...
Maxim Posted December 24, 2015 Author Share Posted December 24, 2015 I think it is pretty nice already, And yes, i added the bicarbonate, i just changed KNO3 to NaNO3, It looks a lot nicer ( to me ) and NaNO3 is cheeper! I think they will survive until NYE, it's only 7 days away! Link to comment Share on other sites More sharing options...
lloyd Posted December 24, 2015 Share Posted December 24, 2015 <sigh>It's good you don't live in Florida. They wouldn't keep for three days outside an hermetically-sealed container. L Link to comment Share on other sites More sharing options...
fckiamdead Posted December 24, 2015 Share Posted December 24, 2015 Nice stars and a beautiful colour! What about Cryolit!? (A workaround to a not hygroscopic compound) Link to comment Share on other sites More sharing options...
braddsn Posted December 24, 2015 Share Posted December 24, 2015 Maxim... those stars are impressive! And I like the bright yellow tint they have. I roll D-1 and N-1, and they are not as yellow. Good job! Take video of your NYE fireworks! Link to comment Share on other sites More sharing options...
Niladmirari Posted December 24, 2015 Share Posted December 24, 2015 Maxim you said - No more videos from me guys. http://www.amateurpyro.com/forums/topic/11386-no-more-videos-from-me-guys/ Link to comment Share on other sites More sharing options...
Niladmirari Posted December 24, 2015 Share Posted December 24, 2015 And now you continue to publish videos. Link to comment Share on other sites More sharing options...
Maxim Posted December 24, 2015 Author Share Posted December 24, 2015 (edited) A 0,8" star mine is nothing like a 3" shell, i don't see anything scary in publishing a tiny 0.8" starmine. PS: Nil, why did you put a dislike on the video? Edited December 24, 2015 by Maxim Link to comment Share on other sites More sharing options...
MrB Posted December 26, 2015 Share Posted December 26, 2015 A 0,8" star mine is nothing like a 3" shell, i don't see anything scary in publishing a tiny 0.8" starmine. Just for reference. In the eyes of the law, what you are making is an IED, and the size of it only makes a difference if you actually deploy it where people get hurt. When it comes to making explosives, storing, handling, and all the other terrorist activities they might want to charge you with, the size of the device actually doesn't matter. At all. If you get lucky during your hearing a court might be willing to let you of slightly easier if the device is benign, but a 12" shell is no more a weapon of mass destruction, then a 0.8" starmine, so they would be as willing in both cases. Which is why i walked away with a "shame on you" and a slap on the wrist after being convicted of blowing a cop up (he's fine by the way) with a home-made primary explosive. I made, and stored it with the intent of creating "firecrackers", and he was the bomb-tech responding to the call when the cops wanted it "rendered safe". In the process of doing so, he made a series of stupid mistakes, escalating the situation to where it went of, and he confessed to fumbling it all, at my hearing. On the other hand, if my intent had been to blow up the local police station, then i'd probably still be in jail. What i mean to say is, you really need to take a step back, and think this through. If your willing to take the consequences of the cops busting you for making a 0.8" starmine, then you are just as fine getting busted for something a lot larger, and if your not ok with getting busted that same way, for your own sake, don't post the 0.8" starmines either.Which would be sad, videos be nice.B! Link to comment Share on other sites More sharing options...
BlueComet24 Posted December 28, 2015 Share Posted December 28, 2015 Sadly I don't have a video to share of this, but I thought I'd at least give an account of it anyway. I made a device that was similar to a ground bloom flower, but larger. It consisted of a 1x2.5" tube plugged at one end and with a fuse hole/nozzle drilled off-center just above the clay plug. The nozzle was as off-center as possible while still going into the tube and not just the wall. I filled the tube with a fuel consisting of 60% KNO3, 40% xylitol, and +1% Fe2O3.I expected this to spin on the ground like a ground bloom flower. I put it on a flat surface and lit it. It started spinning on the ground, just like I expected, but then started lifting off! It flew about 10m up, just like one of those little "speed balls" or "darts", before coming back down.I'd be interesting in hearing an explanation of how this type of device can fly without a downward nozzle like a stinger. Link to comment Share on other sites More sharing options...
lloyd Posted December 28, 2015 Share Posted December 28, 2015 (edited) Heh! Blue, it has to do with thrust vectors and gyroscopic precession. It just happens that, with enough thrust and a slightly off-angle exhaust hole, a tube will spin until it becomes 'gyroscopic' in nature, then precess as it spins until the hole is pointing predominantly down... not perfectly always, and sometimes not enough. But when it is enough, and the thrust is greater than the weight of the tube, it lifts! I've made many so-called "speedballs", and when I demonstrated them at one Florida Fall Fireworks Festival, several other people started making them impromptu... one almost 1-1/2" i.d. by 8" long; and it FLEW! <G> I had nothing to do with the making of those others -- so there were no 'tricks' involved. Once they saw how they were (very simply) made, they started coming out of the woodwork left and right. Lloyd Edited December 28, 2015 by lloyd Link to comment Share on other sites More sharing options...
BlueComet24 Posted December 29, 2015 Share Posted December 29, 2015 Wow, very interesting! Thanks for the explanation. I still feel like there's a little bit of "magic" involved. They are very simple to make, especially with a castable fuel like KNXY. I just made 4 similar but smaller ones, and I'll have to do more in the future. They're now on my list of favorites. Link to comment Share on other sites More sharing options...
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