al93535 Posted July 11, 2006 Posted July 11, 2006 Well we have a green, and a blue rocket thread. I thought I might add a red one with my first successful colored rocket. And it is of course, red! Here is the video. Man these things take off fast! http://www.apcforum.net/files/1lbsrnno3n2mgal.wmv I have no prefiring pic. It was 55% strontium nitrate, 28% 325 mesh mgal, and 17% saran resin. Looks like it gets awesome thrust! This was mixed very well, and with previously dried Sr(no3)2 and then pressed into the case. I used standard 1lb rocket tooling. I will be making a green one soon as well, as soon as I get my Barium nitrate. The ratio's are a bit different for those though.
Mephistos Minion Posted July 11, 2006 Posted July 11, 2006 I lol'd at the title (Southpark reference). Looks like some nice work there Al, and something actually within my grasp soon. Planning on any payload capability testing?
ActionTekJackson Posted July 11, 2006 Posted July 11, 2006 Damn son... that went hella up there... Definately gonna have to be ordering some more chems... nice work...
Silverturk Posted August 7, 2006 Posted August 7, 2006 Nice rocket! A few questions though; What is saran rosin? Is it a chlorine donor? (Spelling?) Or some kind of binder? And I don´t really know what a standard 1 pound tooling is... is it a end burner, or does it have a core?
al93535 Posted August 7, 2006 Author Posted August 7, 2006 Standard 1 lb tooling is a cored rocket made in a 3/4" ID tube, 7-1/2" long. Here are the tools: http://img.photobucket.com/albums/v242/al9...rockettools.jpg And you can buy them here: http://www.pyrotooling.com/prod_Rocket.htm Yes saran resin is a chlorine donor, but its also a fuel. And it can be used as a binder, but I have never tried it. Oh and BTW, that rocket went to 1400 feet plus!!!
cplmac Posted September 27, 2006 Posted September 27, 2006 Couple of quick questions. Did you use Acetone or Vaseline or any kind of wetting binding agent? I would love to make one of these with my three pound strobe rocket tooling. Is the strobe tooling compatible or do you use whistle or long winded screamer tooling? I have all the ingredients so I would like to mix up a batch this weekend given my tooling meets specs.
Mumbles Posted September 27, 2006 Posted September 27, 2006 I think they use standard BP tooling, but I am not positive. I would think whistle tooling would still work. The saran would act as a binder if any alcohol or acetone would be added. In my experience, wet binding isn't normally used in rockets though.
Silverturk Posted September 27, 2006 Posted September 27, 2006 If you would read what Al93535 said earlier, you would get the answer. "...it can be used as a binder, but I have never tried it."
cplmac Posted September 27, 2006 Posted September 27, 2006 Not exactly my question but okay. Mumbles I made a batch of Whistle using acetone, just kneaded it to a good playdoh like consistency and screened it. Let it dry overnite and there you have it. pretty easy. Works great, I haven't tried making it dry.
al93535 Posted May 22, 2007 Author Posted May 22, 2007 Here I am with another 1 lb rocket! This sucker has a 380 gram 4" ball header! The entire rocket weighs in at 528 grams!!! I have purple with tail stars in there. I just had to show it http://img.photobucket.com/albums/v242/al9...lb4inchball.jpg
pudidotdk Posted May 22, 2007 Posted May 22, 2007 Nice one! And I though 2lb's with 4" was much. Please record it when you fire it, I'd love to see it in action!
moonshot Posted May 23, 2007 Posted May 23, 2007 Wow! That was amazingly fast. What sort of tube did you use for the motor? It must have to be pretty stout to take that kind of pressure. Did you roll it yourself or is it a commercial item and what are the specs for length, ID and wall thickness?
al93535 Posted May 24, 2007 Author Posted May 24, 2007 I rolled that one. That was back when I tried to make everything myself. The tube is 7-1/2" long, 3/4" ID and a 1/8" wall. Unless you can roll some really nice strong tubes, use commercial ones. Here are pics of the tubes I used to roll: http://img.photobucket.com/albums/v242/al93535/nozzle.jpg http://img.photobucket.com/albums/v242/al93535/tubes.jpg I now use NEPT or skylighter tubes. the NEPT are obviously alot higher quality though.
al93535 Posted May 26, 2007 Author Posted May 26, 2007 Not yet, it will be soon though. I just finished making a double break rocket on a red engine. the shell weighs 345 grams its Blue then orange. I am currently debating what I want to do with the next project. Palm tree shell, pattern shell, 3 break 4" can.... I don't know yet. When that is finished I will likely shoot them all off...
pudidotdk Posted May 26, 2007 Posted May 26, 2007 I'd like to see a palm.I've always wanted to make one myself
Mumbles Posted May 27, 2007 Posted May 27, 2007 I have a palm tutorial on the old form (see signature for link) on making palm shells. You should have a look if you want,
hondo Posted November 2, 2007 Posted November 2, 2007 I need to know how you do the delay for the flash or any header, I trie drilling a hole in the clay top plug and hot gluing a time fuse in but my rocked exploded about 15 feet of the ground
cplmac Posted November 2, 2007 Posted November 2, 2007 I don't use any kind of plug at the top, clay or otherwise. I just top off the tube with flash and when the core burns through the delay bang.
Mumbles Posted November 3, 2007 Posted November 3, 2007 It sounds more like a rocket problem than a header problem. If it exploded 15 feet off the ground, the rocket CATOed and set off the header.
ActionTekJackson Posted March 26, 2008 Posted March 26, 2008 Well, Al, I finally got those chemicals I was sayin I was gonna get. I know, two years later right? lol, anyway, I made a small test rocket for this mix and I was quite impressed. I do have some concerns however, first one being you pressed your mix, and I rammed it, very carefully I might add, as I tested an open burn of the mix and it burns quite fast, almost like flash. So, I was kinda crapping my pants. Are those fears warrented or is it pretty safe? Also, since I can only buy 1lb of Oxidizer a year I don't really wanna rush through the Sr(NO3)2 About how many grams of the propellant is used in a single 1lb rocket ya think? Anywho, here is a vid of the rocket, it was a pretty small test, just a 1/2" ID x 1 1/2" bottle rocket. No core on it so I was impressed.
ActionTekJackson Posted March 27, 2008 Posted March 27, 2008 anyone wanna help me on this? most importantly the safety issues?
FrankRizzo Posted March 27, 2008 Posted March 27, 2008 They're fairly fuel heavy..figure ~50g per motor. It's important that you *PRESS* these rockets only. Dan Creagan had one of these pop while ramming.
ActionTekJackson Posted March 27, 2008 Posted March 27, 2008 Thats what I was afraid of... crap... Thanks Frank :-)
Mumbles Posted March 27, 2008 Posted March 27, 2008 About 50g per rocket sounds about right. When I was around I want to say that Al got somewhere between 3 and 4 rockets per 200g of comp. Not sure though. Al made the rockets, I usually made the headers. I've personally witnessed people ramming more dangerous compositions. Magnesium fueled red rockets actually. Not something I would ever do. Made me cringe everytime the hammer struck the rammer. This is not meant to be an "it's ok to ram it" type of statement. I personally wouldn't nor suggest anyone to do so. I even get weary about ramming BP rockets based off of what happened to a friend of mine about 5 years ago. Lets just say his left hand isn't a functional anymore. Thugsta785 for anyone who was with APC waaaaaaaaay back in the beginning.
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