andyboy Posted September 10, 2007 Posted September 10, 2007 Hey guys. I would need some help from you all since I've racked my brain and came up empty I have I problem, actually a friend does, the problem is this: A 30 meter water-filled well.A waterhose attached to a pump.The pump is stuck at the bottom of the well.The hose needs to be severed as far down as possible.The house next to the well cannot be subject to any damage (5 meters away). Thoughts, suggestions, LE's, HE's. I was thinking of maybe burning the hose of, does anybody have any good solutions, please post them here.
frogy Posted September 10, 2007 Posted September 10, 2007 Un-stick the well and putt it out, then cut off the hose?... Does it matter if the pump gets broken? Is the hose strong? If the hose is strong try pulling the pump up... If the pump is at the very bottom and you don't care if it gets broken... I'd rig up some type of HE and lower it to the bottom possibly with a weight\rock and detonate it... Hopefully breaking the pump lose... Other than that, if you need to safely remove the pump without breaking it (have no idea why since it's stuck anyways) Try slipping something over the hose and having it slide down the hose with a weight and have a LE or HE with a charge aiming towards the hose...
hst45 Posted September 10, 2007 Posted September 10, 2007 I'm thinking a couple of loops of det.-cord coiled around the hose, lower it down on a string, hit the switch.... . That would seem a lot easier than trying to stuff a charge down 30 meters of water-filled hose. Another option might be burning the hose with something on the order of an underwater flare. I'm thinking maybe a magnesium or sodium based fuel, but I don't really know how to best (safely) get it into position and fire it.
jacob Posted September 10, 2007 Posted September 10, 2007 It's good to see you back Andyboy, i have a question, how big is the ID of the hose? if the hose is big enough then i suggest holding the hose straight up and lowering a electrically fired salute down it on a string, let it go all the way to the bottom then bring it back up a couple of inches so it's inside the hose and not the pump, then set it off, that should sever the hose and you can pull it out, but if that doesn't work you could always try thermite or an HE.
Pyrohawk Posted September 11, 2007 Posted September 11, 2007 Hello everybody! I was just messing around and decided I want to make a Fire Sword. Just basically like it sounds....a sword that appears to be on fire, especially a colored fire would be cool! I just want it to burn for a few minutes to get some cool pictures. So any ideas on how to do this? I know that Poi would probably work... but I don't have any alcohol or Kevlar cloth. So...any ideas how to do this? It only needs to burn for a minute or so and should look cool of course...
frogy Posted September 11, 2007 Posted September 11, 2007 Try some colored fire comps... Maybe Bengal fire or soemthing... I'm not very experienced with them... But you could form them into a strip like a comet and hot glue it onto a sword... A better thing would be Meths (methylated alcohol) [Methanol] as a solution with Strontium Nitrate, Barium Nitrate, or something else for color soaked into a rag... Dying the mix would help and then you could "tie dye" the rag and light it, burning different colors in different spots...
Mumbles Posted September 11, 2007 Posted September 11, 2007 The chlorides of strontium and barium will work better. I find that Copper (II) Chloride looks the best IMO. Probably the easiest way would be to go buy some sterno fondue fuel, the jellied stuff, and smear it all over a sword. Adding in some calcium or sodium salts would probably give a photographable flame.
optimus Posted September 11, 2007 Posted September 11, 2007 So any ideas on how to do this? I know that Poi would probably work... but I don't have any alcohol or Kevlar cloth. Methyl borate (or Strontium Chloride for red) is the way to go - I'd recommend buying/making a proper sword though. Not hard to do atall and the cloth is widely available. You can always use a rag too. http://www.luxotica.com/education/howtomake/sword.cfm
andyboy Posted September 11, 2007 Posted September 11, 2007 The thermite idea sounds like my best bet, maybe load it into a pipe and lower it into the hose or make a loop thingy to attach around the hose, seems like the hardest part is keeping the thermite dry. Will water put out thermite? Does anybody have experience with this or will I have to try it myself? Jacob, nice to see you to. The hose is about 1,5 cm ID and I've already lowered three or four salutes in the pipe but to no avail. I'll look up some flare comps aswell since there are quite a few that I know will burn under water but then it's the problem to get the right chems. Might not be a problem since my friend will pay for it anyway.
optimus Posted September 11, 2007 Posted September 11, 2007 Once it's lit water will not put it out. I've heard of thermite being used for underwater welding, and seeing as you're not going to be near the unit there's no danger from flying molten globules.
Mumbles Posted September 11, 2007 Posted September 11, 2007 I've always heard that thermite burns so hot, it will decompose water into it's elements and actually then burn even hotterr from the oxygen and hydrogen around. No idea how true that is, or if it applies to extreme quantities of water. You may want to look into some cast thermites for a longer burn time.
frogy Posted September 11, 2007 Posted September 11, 2007 I'm pretty sure that thermite does burn better with water, but like you said I'm so sure about the underwater thing.... If you get the thermite anywhere near the cutting area it should happily sever the pipe... If you didn't know this yet... Thermite + Metal pipe = pipe bomb... So unless you want to destroy the well Thermite + Paper\Plastic tube would be better... Something easy to ignite Thermite in a tube would be an ematch or similar with the ematch attached to some thermalite... Dan Williams has a tutorial on it if you don't have any stockpiled Here:http://www.pyrotechs.org/dwilliams/thermal...thermalite.html
qwezxc12 Posted September 12, 2007 Posted September 12, 2007 qwezxc12: if you get some of those perforated sheets, I'd definitely be up for buying some pieces from you -i know they come in pretty big hunks. The ones I was looking at were all like 32x48 or so. The plastic ones were about the same price as metal, and sometimes a bit cheaper. I'd be interested in like, 1/8" 3/16" 1/4" 5/16" maybe 3/8" 12x12" pieces or so.tentacles, I passed on the nice laser drilled or machine punched sheets from McMaster-Carr...too spendy for my wallet. I went to K-mart, the home of incredibly cheap, mass produced shit, instead I grabbed the cheapest bread pans I could find ($2.99 & $3.99) and spent some personal time with my drill press:http://www.apcforum.net/files/sizeingpans.jpg Those are 3/16" and 1/4". I bought enough of the larger loaf pans to do 5/16", 3/8", 7/16" and 1/2" star sizing screens, too. They came out better than I thought. Maybe I'll be able to make some consistent color-change aerial shells now.
crazyboy25 Posted September 12, 2007 Posted September 12, 2007 i am considering buying rocket tooling from wolters pyrotechnic tools but im not sure what to get i was thinking about whistle rockets but then i get on the site and see: whistle rockets long winded screamers and nozzles rockets all which use whistle mix which one should i get? also which rocket tooling size should i get (i am a begginer but i dont want to make tiny little bottle rockets...) also if anyone knows of a good site with tutorials on the exact details of making whistle rockets that would be great thanks.
mormanman Posted September 12, 2007 Posted September 12, 2007 i am considering buying rocket tooling from wolters pyrotechnic tools but im not sure what to get i was thinking about whistle rockets but then i get on the site and see: whistle rockets long winded screamers and nozzles rockets all which use whistle mix which one should i get? also which rocket tooling size should i get (i am a begginer but i dont want to make tiny little bottle rockets...) also if anyone knows of a good site with tutorials on the exact details of making whistle rockets that would be great thanks. They have a universal rocket tooling kit. I'm gonna get the 4 oz or I think 6 oz rocket kit. They're kind of expensive but you don't have to go and buy more. Unless all are universal.
crazyboy25 Posted September 13, 2007 Posted September 13, 2007 interesting he says they are good for: Strobe Rocket, Long Winded Screamer, Black Powder Motor, Hybrid Motor, Black Powder Whistle Assist Rocket, and Color Tail Rocket. what is the difference between whistle rocket and long winded screamer if they are essentially the same i might get this but if not....
asilentbob Posted September 13, 2007 Posted September 13, 2007 I got the 3/4" universal tooling at the PGI convention.. and haven't had a chance to use it. Hopefully ill get around to making some more stuff sometime this month... but i wouldn't count on it. Also got two sets of Doc Schmitt's (sp): an incomplete long winded screamer tooling set (just need to send a friend some spindle specs)... I think its 3/4" too... then i got a 7/8" gerb tooling kit... But i don't have 7/8" tubes... so I'm likely going to get on rolling some nice thick ones and also buy some... Also got a bunch of 1/4" tubes... so i gotta get on making some tooling for them... going to be really quick and fun little rockets/inserts.
Pyrohawk Posted September 13, 2007 Posted September 13, 2007 Hey everybody! I made that Fire Sword I was talking about the other day.... I didn't have any Kevlar so I just used an old sheet. Hahaha it still worked really well and burnt for over 5 minutes! But it did burn the cloth up. It was fun but now I'm gonna order some Kevlar so I don't have to rewrap and stuff every time! Here are some pics... Before I lit it: http://img.photobucket.com/albums/v389/pyr...eswordonbed.jpg In action!: http://img.photobucket.com/albums/v389/pyr...k_15/sword1.jpg http://img.photobucket.com/albums/v389/pyr...k_15/sword4.jpg http://img.photobucket.com/albums/v389/pyr...k_15/sword3.jpg http://img.photobucket.com/albums/v389/pyr...k_15/sword2.jpg
Mumbles Posted September 13, 2007 Posted September 13, 2007 There is a definite difference between whistle, and long winded screamers. Firstly, Long winded screamers use a longer casing, and a combination fuel. A hot fuel is place in for the first few increments, and a slower fuel is used for the rest. The long winded screamers have a longer core as well. Cplmac should be able to explain better than I can.
crazyboy25 Posted September 13, 2007 Posted September 13, 2007 so this "universal" rocket tooling wont be good for standard whistle rockets? http://www.wolterpyrotools.com/pyrotools/rockettools.html i mainly want to be able to make whistle rockets because i made one once and it worked great and i haven"t been able to replicate it. black powder rockets wouldn't be bad though if i do get a rocket kit what size do you suggest is 2lbs too big? i liked the idea of the universal rocket tooling becasue i want to make whistle and BP rockets.
kingvitamin Posted September 13, 2007 Posted September 13, 2007 I am going to the local community college and lived off unemployment checks for the summer. life is good. I trust that you all are doing well.
Mumbles Posted September 13, 2007 Posted September 13, 2007 Nope, only long winded screamers. I think you'd be more impressed with making long winded screamers though. They fly higher and longer than normal whistle rockets. They have a cooler tone IMO too. It's odd though, because you can make strobe rockets on the tooling, Which are essentially whistles with a strobe comp as the delay. I am willing to bet you can make whistles on it too, they just might burn faster than normal.
crazyboy25 Posted September 13, 2007 Posted September 13, 2007 interesting how are long winded screamers made? ie procedure pressure needed formula layers nozzle?
mormanman Posted September 13, 2007 Posted September 13, 2007 so this "universal" rocket tooling wont be good for standard whistle rockets? http://www.wolterpyrotools.com/pyrotools/rockettools.html i mainly want to be able to make whistle rockets because i made one once and it worked great and i haven"t been able to replicate it. black powder rockets wouldn't be bad though if i do get a rocket kit what size do you suggest is 2lbs too big? i liked the idea of the universal rocket tooling becasue i want to make whistle and BP rockets. They did at one time have universal rocket kits, but I didn't see them.
Mumbles Posted September 13, 2007 Posted September 13, 2007 No nozzle. The first increments are made from 76/23/1/3 standard sali based fuel. The "slow" increments are made from benzoate. I believe steve laduke says to keep increasing sali increments until it catos, and back it off one. Pressures should be the same as normal whistle rockets, 8800 psi or so.
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