Zmuro Posted February 1, 2008 Share Posted February 1, 2008 I had a flowerpot! It was a large 6" Can shell that weighed like 2100 grams... I think i had it fit too snugly in the mortar Here is the video: http://www.apcforum.net/files/6inchflowerpotfarfalle.wmv Also, I did lit up a shell that was rather VERY VERY loose fitting and it still went up just fine, so I guess the moral: Loose is better then tight How are these Farfalle made, and what composition did you use? Is this like a hummer? Link to comment Share on other sites More sharing options...
Karlos Posted February 1, 2008 Share Posted February 1, 2008 Hallo. I need youre help again. Bees: http://www.n-joy.cz/#/video/tourbilllions/yAaSeXjqOISTzl30/ Citation from shimizu book: "Bees are group of hummers, each streaming fire dust spark, as they fly spirally". Yes, right, most of pictures on internet in Japan is called bees. Spirally flying, one hole, I thing that in plug. Another citation from shimizu: "Prepare kraft paper tubes of 15m inside diameter 30mm long and a wall thickness of about 2mm. Cluse up one end of each tube with gypsum. Charge the composition solidly in to the tubes, using a press or wooden hammer. Next close up each of the charged tubes with gypsum. Carefully bore a hole in the side of each tube in the centre using a hand drill. Lancaster maintains that it is better to place the dirrection of the hole a tangent to the internal diameter of the tube!". I know how looking classic hummer, but what did Shimizu would to say or write???? Where is hole in the him version of bees???Classic hummer produce only sound, and smal quantity of sparks, further flying stright.Shimizu´s bees(hummers) flying spirally and produce nice spark tail. Please, help me with this problem. Link to comment Share on other sites More sharing options...
Mumbles Posted February 2, 2008 Share Posted February 2, 2008 Those arn't hummers, they're tourbillions(well probably Z-bombs), as obvious from the link name. Anyway, the sparks are made by addition of Titanium to the fuel. You can use other metals likely, but to achieve the same effect as the video, you need Titanium. There are a few things those could be. The two most common are serpets and tourbillions. Serpents are often also called bees. Serpents are essentially small rockets with a long core which makes them burn rapidly and jet around. This link may help. http://www.vk2zay.net/article.php/16 The term tourbillion is often confused with "Z-bomb", which is likely what those are. Tourbillions are fired from the ground and are similar to helicopters. Link to comment Share on other sites More sharing options...
Karlos Posted February 2, 2008 Share Posted February 2, 2008 Mumbles: Thank, OK OK, I thing too, that this is serpents, But I dont understand to Shimizu´s small tutorial for making hole! Describe Shimizu hole in the plug(nozzle) or in paper tube??????? Maybe mistake in translate. What do you thing about size of perfect serpents? Must be longer or shortly for ideal spirally flying? What is better? Shimizu´s 15 x 30 or another 10 x 35 -40???? Incidentally, Z-bomb is stabilised, or not? Have smal hole in the tube, like a hummer. The effect called the bee which is intendeed for poka shells in the Japan is unstabilished.Sorry, I know about my repeated effort in this forum, but I lowe bees, and I must make it, perfect bees, perfect spirally flying. Bye. Link to comment Share on other sites More sharing options...
Mumbles Posted February 2, 2008 Share Posted February 2, 2008 What exactly are you refering to with regards to the hole? In hummers, it is in the center of the tube, but tangental to the wall. That link I gave has an excellent picture. http://www.vk2zay.net/article_attachment.php/50 For z-bombs, I can't describe it. They have to be angled upwards, yet tangental to the conical plug at the bottom. The trick to the Z-bomb is that they don't fly spirally. They actually fly straight, it's just the sparks that make it look like it's flying spirally. Passfire has an excellent tutorial on making them, I'd suggest getting a membership if you don't already have one. Size of these things greatly varies depending on size of the shell. I can't tell how big to make them if I don't know how big of shells you're making. Just from a logistical side of thinking, anything less than 6" poka ball shell probably wouldn't work as the inserts would have to be way too small otherwise.. Link to comment Share on other sites More sharing options...
Karlos Posted February 2, 2008 Share Posted February 2, 2008 Yes, thank. But, why Shimizu write about Hummers with hole in the centre of tube(Classic hummers) and newertheless write about spirally flying. I manufactured hummers, but they had extra rotation speed, and produced sound, not spirally flying. Spirally flying is characteristic only for tubes with hole in the plugs as the nozzle. I dont know, what size must be for optimal spirally flying. I need dimensions, lenght and ID, Big insert will be hard, weighty, and clumsy movement.....maybe must be long and slim. See here: http://www.progresspyro.com/factory_inserts.jpgI am looking effect, with only one hole!!!!!! Confused flying, spirally flying, :http://www.hanabi.co.jp/vtr/cata.ginhati.htmhttp://www.n-joy.cz/video/bees/ohhc5lb4yfvtuyut/Nobody dont know how can I make it? Where are specialists? They hawe pyrotechnics as market...money money money. Uffff. Sorry mumbles, and thanks for youre answers. Sorry for my english. Link to comment Share on other sites More sharing options...
crazyboy25 Posted February 2, 2008 Share Posted February 2, 2008 I am almost positive this is what farfalles look like: http://i179.photobucket.com/albums/w318/cr...25/fallfare.jpgbut my question isn't what do they look like but rather how exactly and what dimensions and comps were used by AL. Link to comment Share on other sites More sharing options...
Karlos Posted February 2, 2008 Share Posted February 2, 2008 Crazyboy: http://wiki.feuerwerk.net/index.php/Farfallehttp://www.pyrouniverse.com/gallery/albums...ay_-_Disney.JPG Link to comment Share on other sites More sharing options...
Mumbles Posted February 2, 2008 Share Posted February 2, 2008 Hummers do fly spirally in the fact that they spin around instead of being propelled directly forward. Things like these are best fired from a canister shell, and not poka style in a ball shell. The size is based upon the size of the canister. There is a good calculator on passfire for instance. We can't do all the work for you. Link to comment Share on other sites More sharing options...
qwezxc12 Posted February 3, 2008 Share Posted February 3, 2008 Crazyboy: http://wiki.feuerwerk.net/index.php/Farfallehttp://www.pyrouniverse.com/gallery/albums...ay_-_Disney.JPGDoes that Disney picture show round stars in the canulle? And am I missing the fuses in the farfalle inserts?http://www.pyrouniverse.com/gallery/albums/userpics/10165/6_inch_ROZZI_Double_Farfalla_shell_with_Cut_away_-_Disney.JPG Link to comment Share on other sites More sharing options...
Frozentech Posted February 3, 2008 Share Posted February 3, 2008 Does that Disney picture show round stars in the canulle? And am I missing the fuses in the farfalle inserts? I can't see the fuses or vents in the Farfalle either. I can't make out exactly what they used as filler, but traditionally there would be rough powder filling the space between the inserts and the cannule of burst, and some cut stars for a pistil of sorts. Link to comment Share on other sites More sharing options...
Karlos Posted February 3, 2008 Share Posted February 3, 2008 http://www.pyrouniverse.com/gallery/albums...ch_-_Disney.JPG There are blackmatch fuses, which looking like a cut stars in farfalle inserts.Maybe:-) Link to comment Share on other sites More sharing options...
Mumbles Posted February 3, 2008 Share Posted February 3, 2008 It sure looks to me like like there are stars in the canule. Anyway the fuses in the above are in the middle of the inserts. I could only distinctly pick them out when moving the screen of my laptop to get good resolution. Link to comment Share on other sites More sharing options...
crazyboy25 Posted February 3, 2008 Share Posted February 3, 2008 Yes there are definitely fuses I the inserts those stars could be dragon eggs or just a small pistil. Link to comment Share on other sites More sharing options...
Karlos Posted February 17, 2008 Share Posted February 17, 2008 Ehm. What is needed for 100% ignition of stars after explosion shell?-Any special treatment of stars surface? -Adding coarse-grain-charcoal?-Which kind of wood for charcoal? -What is perfect outer prime?Thanks, Karel. Link to comment Share on other sites More sharing options...
InRainbows Posted February 17, 2008 Share Posted February 17, 2008 any prime, use a layer of hot blackpowder, or Veline super prime. You could also use the 50/50 method, so you mix 75 star mix/ 25 bp then 50/50 star/bp then 25/75 Link to comment Share on other sites More sharing options...
Mumbles Posted February 17, 2008 Share Posted February 17, 2008 Karlos, your question is too vague, and cannot be answered without specific formulas in question. That being said, I've never had a star not light from a layer of veline super prime, and a layer of green meal over that. I haven't made many flitter stars or strobes, or other hard to light things like that though. Link to comment Share on other sites More sharing options...
Karlos Posted February 17, 2008 Share Posted February 17, 2008 I hawn´t problem wit igniting main star under prime. Ignition of star composition is not problem. My problem rest in etc. 50% stars, which fall down with prime, intact stars. I use classic BP for priming or BP with smal addition of any chemical.Hot meal, OK which charcoal? Differences must be here.Bye. see my last shells. Problem:red stars in 70mm shells(etc 200stars added) pine willow: http://n-joy.cz/#/video/willow-pine/d4zxnv7vq1ufji3j/shimizu stars:(PVC, synthetic resin ribetak)http://n-joy.cz/#/video/red-shimizu/ie7c8m3nphamcvwj/http://n-joy.cz/#/video/red-70mm2/xx5xx9mcglgqaf1n/http://n-joy.cz/#/video/red-70mm-3/ee3ak0jjbpwqaiow/)magnalium green)90mmhttp://n-joy.cz/#/video/green-magnalim-90m...m13byzqbh6xtfn/http://n-joy.cz/#/video/green-magnalium/wwqwgdmxzlqgxveo/ Link to comment Share on other sites More sharing options...
Mumbles Posted February 17, 2008 Share Posted February 17, 2008 Charcoal isn't going to make a great difference in it's priming ability. Crappy charcoal, such as that from charcoal briquettes will probably burn a bit longer and dirtier. While this is not good normally, it is advantageous in primes. Additionally, dry hand sieving the BP, and not milling it. It will also help to increase ignition. It's possible the meal priming is burning too fast over the surface, and not allowed to build up enough heat to light the stars. The second thing you could do to increase ignition is to not break your shells as hard. From the video, it looks like you're using flash. Link to comment Share on other sites More sharing options...
Karlos Posted February 17, 2008 Share Posted February 17, 2008 Mumbles: only KP bursting charge with sulphur (shimizu). I had this problem with stars in shells with BP burst too. I dont know....Thanks. Link to comment Share on other sites More sharing options...
TheSidewinder Posted February 18, 2008 Share Posted February 18, 2008 Karlos, IF you have some commercial Fg powder, use that as a final prime coat. If that doesn't light your stars, something besides the prime is wrong, I think. Link to comment Share on other sites More sharing options...
Pretty green flame Posted February 18, 2008 Share Posted February 18, 2008 Here they are, my first 6 inch shells, so happy. And gummed tape makes tham actually fun to paste. http://i15.photobucket.com/albums/a374/AVP2/twosixinchers.jpg http://i15.photobucket.com/albums/a374/AVP2/sixinchinmyhand.jpg They will ofcourse be top fused as i don't know if my spolettes would stand up to the massive pressures in the mortar. One has 22mm better pearl comets in it, the other Blond streamer comets in it, 22mm also. And they both have a couple of small cut chrysanthemums just to fill the empty spaces between the comets. So happy, still need to fire them though. Link to comment Share on other sites More sharing options...
nath0r Posted February 18, 2008 Share Posted February 18, 2008 Very nice looking shells there, hope you're planning on filming them Link to comment Share on other sites More sharing options...
Pretty green flame Posted February 18, 2008 Share Posted February 18, 2008 Very nice looking shells there, hope you're planning on filming them 22nd March, when I'll be at my site that is large enough to fire these babies. Link to comment Share on other sites More sharing options...
qwezxc12 Posted February 19, 2008 Share Posted February 19, 2008 Those look nice! Gummed tape is easy isn't it? How many layers did you put on them? Any booster in the burst? Link to comment Share on other sites More sharing options...
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