Givat Posted March 5, 2006 Posted March 5, 2006 Not trusting your quick match? why using 2 matches? BTW, very nice shell, hope to see the video
Pretty green flame Posted March 5, 2006 Posted March 5, 2006 Not trusting your quick match? why using 2 matches? BTW, very nice shell, hope to see the video 1 for the lift charge and 1 for the comet (fuse in the lift, comet on the upper side) Somehow i couldn't connect the comet with the quickmatch leader and so i just put another fot the comet. And there will definetly be a video.
justanotherpyro Posted March 5, 2006 Posted March 5, 2006 I know what you mean PGF. I am always hesitant about home made canister shells because I am not well experienced with them, which means they are unpredictable.
BigBang Posted March 5, 2006 Posted March 5, 2006 I know what you mean PGF. I am always hesitant about home made canister shells because I am not well experienced with them, which means they are unpredictable. And you're gonna make one with metal? Tisk tisk ...lol. I also know how ya'll feel. I have yet to make a canister (just hemi's) but have all I need. I just picked up some badass tube, 1 foot long and 3" in diameter. They have 1/8" walls. I'll cut them into 4" lengths and make some end disks. Should turn out nice when finished.
justanotherpyro Posted March 6, 2006 Posted March 6, 2006 I know what you mean PGF. I am always hesitant about home made canister shells because I am not well experienced with them, which means they are unpredictable.And you're gonna make one with metal? Tisk tisk ...lol. I also know how ya'll feel. I have yet to make a canister (just hemi's) but have all I need. I just picked up some badass tube, 1 foot long and 3" in diameter. They have 1/8" walls. I'll cut them into 4" lengths and make some end disks. Should turn out nice when finished.Haha. Yea, that project will be a little while. It should be more successful than other ones if the glue holding the timefuse will grip the metal. I asked the janitor at school to save the tubes from the industrial paper towel rolls, so I have near unlimited access to excellent quality tubing perfect for 3" shells. So who needs to use pop cans.
PyroPicasso Posted March 6, 2006 Posted March 6, 2006 I think that the 16oz and the 2 Liter plastic soda bottles might work better than the aluminum cans?
BigBang Posted March 6, 2006 Posted March 6, 2006 So paper towel rolls you say? I spose that is an untapped resource at my school since I am the only true pyro. I'll ask him tomorrow after my NCO meeting(if you're in JROTC, you'll know what it is.) So far from my school, I'm just getting dry erase markers to use as smokes, fountains, salutes and some amazing rocket headers, loud that is
justanotherpyro Posted March 6, 2006 Posted March 6, 2006 The paper towel tubes are good for smaller shells. They are like 1.5 " ID. I don't know for sure where the 3 inch tubes I am getting come from.
Mumbles Posted March 7, 2006 Posted March 7, 2006 Paper towel and TP rolls are 1 5/8". I think if thinner string is used to spike, they would fit in a 2" ID tube. I ended up rolling a slightly larger tube for them. I took a 2" ID shipping tube and rolled around the outside of that. It works well. This was the "Mumbles OTC Shell". I'll post the writeup soon. Might as well put it in the tutorial section, even though the actual proceedure works like shit. I will try to update it a bit.
justanotherpyro Posted March 7, 2006 Posted March 7, 2006 Regular household tubes are that size yes. These came off of a hand towel dispenser at school. The one that holds the big brown pieces of paper. It is smaller and has a thicker tube.
Mumbles Posted March 7, 2006 Posted March 7, 2006 The ones I got from work were like 2 1/4". I have seen the ones you are talking about though.
FrKoNaLeaSh1010 Posted March 7, 2006 Posted March 7, 2006 There is deffinitely a slight variation on toilet paper roll sizes. When I used to use them for canister mines I found normal household type rolls that had 1 5/8" and all the way down to inch and a half. I found this cause i used to use commercial mortars and if you use the 1 5/8 ones (very very snug) there wasn't room for quickmatch to the bottom on the outside. When I was into canister shells of these sorts I found that depending on mortar size (commercial 1 5/8" or a 2" pvc) you can actually vary the size depending on how you plan on spiking and with what thickness twine to get an almost perfect fit in the tube. Just something I experimented with back in the day....wish i still had the info on what types were what measurement though. overall...most were 1 5/8"
justanotherpyro Posted March 7, 2006 Posted March 7, 2006 So far what I have figured out is that the schools paper towels have small thick tubes that won't work very well in 2" PVC pipe. And the toilet paper tubes are damn near perfect for 3 " PVC pipe.
justanotherpyro Posted March 8, 2006 Posted March 8, 2006 What is a good way to attach a rising comet onto a shell? I tried gluing it to the bottom of the shell, bu it didn't work to well. Is it easier to attach it to the top of the shell with a seperate quickmatch? The shell size is 3" spherical.
Frozentech Posted March 8, 2006 Posted March 8, 2006 What is a good way to attach a rising comet onto a shell? I tried gluing it to the bottom of the shell, bu it didn't work to well. Is it easier to attach it to the top of the shell with a seperate quickmatch? The shell size is 3" spherical. You can hotglue it to the top of the shell, no extra quickmatch needed.
Draco_Aster Posted March 9, 2006 Posted March 9, 2006 But wouldnt that give it a low chance of ignition? In a 2" shell I made a while ago I glued 4 small pumped TT stars to the bottom which made an affect right up to the burst. It just seems more logical to put them on the bottom.
justanotherpyro Posted March 9, 2006 Posted March 9, 2006 What is a good way to attach a rising comet onto a shell? I tried gluing it to the bottom of the shell, bu it didn't work to well. Is it easier to attach it to the top of the shell with a seperate quickmatch? The shell size is 3" spherical.You can hotglue it to the top of the shell, no extra quickmatch needed.The question is, is how do you ignite it? Cut a hole in the quickmatch leader right next to it?
Chris Posted March 9, 2006 Author Posted March 9, 2006 What is a good way to attach a rising comet onto a shell? I tried gluing it to the bottom of the shell, bu it didn't work to well. Is it easier to attach it to the top of the shell with a seperate quickmatch? The shell size is 3" spherical.You can hotglue it to the top of the shell, no extra quickmatch needed.The question is, is how do you ignite it? Cut a hole in the quickmatch leader right next to it? Generally you don't need to. The hot gases from the lift powder burning should ignite the comet.
Draco_Aster Posted March 9, 2006 Posted March 9, 2006 Yes but I doubt that would work everytime. It imagine that not working with large shells 6"+ unless you place the comet away from the center of the shell.
Mumbles Posted March 9, 2006 Posted March 9, 2006 Generally, I don't trust the lift gases, although I am sure in most cases it is strong enough. I take a chunk out of the quickmatch and put it against the comet. I have never had a problem thus far. You can see a picture from my palm tree shell here. It is bottom attached.http://img.photobucket.com/albums/v137/Mumbles/PalmTree2.jpg You can see my method of top attachment here. (Yes, I love masking tape)http://img.photobucket.com/albums/v137/Mumbles/P1010046.jpg
justanotherpyro Posted March 9, 2006 Posted March 9, 2006 I wouldn't trust the hot gases either. Besides, cutting a little piece out of the quickmatch isn't a problem now is it? Is that one on the far left a small shell made out of a Guiness beer widget mumbles?
Mumbles Posted March 9, 2006 Posted March 9, 2006 Nope, it is a standard 1 5/8" commercial plastic shell. That had about 15g of Flash powder in it I believe.
BigBang Posted March 10, 2006 Posted March 10, 2006 How fun, I spose the large one on the right is a 4 incher? Speaking of those 1 5/8" shells, I think I might get that 50 piece from discount pyro, cheap and fun! And masking tape is our friend, I love it, and just tape in general. Tape is good for spiking, holding, quickmatch tubing, casings, and many more ings...
justanotherpyro Posted March 10, 2006 Posted March 10, 2006 Masking tape is the tape that I use most. Even more than duct tape Another 3" canister shell possibility is a juice concentate container. The ones you keep in your freezer and add water to. It has a metal bottom, and a removable metal top. paste a few layers just over the thin cardboard casing, spike it a little and it should work really well. With some metal fallout though, but better than a soda pop can.
Mephistos Minion Posted March 10, 2006 Posted March 10, 2006 In light of the competitions starting and the completion of my 3/4" and 1/2" star pumps, I have decided to try my hand at a 3" shell. I am thinking 1/2" D1 glitter with 4 or so Reeper Silver 3/4" comets. With maybe a 3/4" Akwapo comet with pine BP for a tail. Any suggestions. As for construction, I only have (or hopefully will have) some brown wrapping paper. I made a 2-1/2" former last year, and some end disks. So I am thinking maybe 5 turns of wrapping paper around the former, disk inserted and then bottom pleated, taken off former. Then a liner of cerial box is put it, the case is filled with stars and burst, and then a fused disk is inserted and pleated over and glued (like in Chris' tutorial). Spiked with jute twine and then leader is attatched to spoulette, piped match is run down the side into the lift and it is pasted again with a few turns of the glued wrapping paper. Hopefully this method will make a strong enough shell to provide a good break with BP on puffed rice.
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