Hey there, I'm Jack. Welcome to JackMasterOfNone. So, you know the saying, "Jack of all trades, master of none"? That's pretty much the vibe here. I'm into a bunch of stuff-fitness, pyrotechnics, longboarding, onewheeling, hiking, you name it. I'm not an expert at any of it, but that's not really the point.
This channel is just a space for me to share all the random things that catch my interest. If you're into trying new things and don't mind a few bumps along the way, you'll fit right in.
How do you make the bang in the air? Is it like a ball with different layers where outer layer is to launch it in the sky and jnner layer to make it explode??
The rocket itself is a cardboard tube about 3/4” inner diameter and 7 1/2” long. There’s a tapered core to the propellant grain that is pressed into the tube. A clay plug is pressed into the top end and a small hole is drilled into the plug to allow flame pass thru. A shell of flash powder is fixed to the top of the rocket with a fuse oriented in the hole at the top of the rocket. This way the propellant burns lifting the rocket and at the end of combustion the fuse is ignited thru that hole and sets off the flash header.
@@JackMasterOfNone awesome! Im gonna subscribe. Pyrotechnics is very interesting. Im planning to build a kno3 sugar rocket with my friend, but its hard to get pure kno3 here and i can only buy ones with like 46% purity. But maybe i can purify it.
+gReN Been a while but I'm pretty sure it was one of these: www.skylighter.com/skylighter_info_pages/article.asp?Item=28#rockets You'll see bigger faster versions in my channel, one of the more impressive rocket propellants in my opinion.
@actionjacksonducane and also, so how many tons of press you using it now ? i heard some people using 6 to 12 ton press,. its pretty sad for me cause its really hard for me to get a hydraulic press in my country, im not looking for a huge industrial press, but all i found are huge presses, even i tried on ebay, but the shipping cost its like US$300, that cost more than buying the press !!! u know what ? i aready paid US$400 for the ball mill machine which shipped from USA to me omg !!!
@jack,. thanks for sharing !! actually im using standard 1lb Parallel wound tubes (with 1/4" walls), i also got a tube sleeve for protection in the ramming process. i see! so you using hydraulic press, thats pretty bad for me cause i can't get one where i live..... only hammering it everytime., btw, do you thing milling those bp for 24 hours is too much and too strong? cause i see you only milled for 2-4 hours.
@vess25 As for the process itself for ramming ram 1/2 tablespoon bp increments at a time, give at least 10-15 good whacks (this should make you pretty tired, unless you're superman). If you still have problems you may need a bigger hammer... I had the same issue you're having. The key is constancy, get things down to where you are reasonably certain that your ramming hard enough and if you continue to get CATOs decrease your ramming increment. If that doesn't work you need stronger tubes...
@vess25 I had limited success using the ramming method, maybe 25-50% success. With my press however I'm so far at 100% success. Some things that may help. When ramming you really need to ram it hard, I also use tubes with 1/4" thick walls. I also recommend a tube sleeve to help protect the tube from splitting.
I'm pretty sure there's no any air pockets inside my rocket, I'm using standard 1pm rocket rammer by ramming the bp into the tube about 1.5cm high per insert of fuel...
@actionjacksonducane wow!! U did it perfectly!! I tried to use willow charcoal in the standard bp ratio like u said, and I milled for 24 hours, my bp performs great! Like 4 fg grade, but my end burner(in 1 lb rocket) Cato! U got any idea why it happen? Thanks for sharing!!
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
@PoopSwindler Nope, I did not treat them with anything. If I were to store them I might consider it but these were all made no more than 5 days before the shoot. The iron percentage was around 20% I think, I'd have to check my log for sure but I'm pretty certain. And they were definately pressed dry, keep in mind this might be a tad hard on your tooling! ;-)
@shadopyro Sure! Its standard 75/15/10 BP with willow carbon, milled in a borderline commercial quality mill, a friend of mine made it with PVC pipe and a treadmill with custom media made out of lead filled bullet casings and some bearings. Thing mills like champ.
i love the iron filings look , did you need to treat them with linseed oil or anything or is it fine when you press them in dry? also what is your percentage of iron?
@actionjacksonducane yeah, that makes sense, but im also in the can i really justify purchasing a press situation as well! as im having no problems ramming my motors, my new specs have been 100% reliable ao far over about 40 motors? but i dont want to jinx, ive got a big display coming up soon! not a problem mate, im glad youre still about! so pyro has taken a back seat for you then recently?
@murdoch2486 It gives you a lot more potential yes. There's no way to consistently get reliable motors with a hot fuel by ramming. Following a consistent pattern with a press and a hot fuel will allow you to be 98-99% sure that the rocket will not CATO. I had a hard time justifying the cost of a press at first, but I can't see not using one now. :-) Sorry for the long delay :-S I haven't done any rocketry for some time now.
@actionjacksonducane haha, 10 months later! :) thanks for getting back to me though mate! ive been busy! i really need to use a hydraulic press though, im sure the amount of thrust generated over ramming motors is quite substantial?
@murdoch2486 I used to be worried about air pockets, when ramming them I would get 2-3 good ones out of every 5. Now I use a press and haven't had an unexpected CATO yet. Some of them the cases split which was my own fault, obviously those did not work. I just need to construct a new sleeve for the tubes.
It is 75/15/10 Willow carbon is used, its only milled for about 2-4 hours. If I remember right the mix for these recently posted rockets was corned, that always helps heat up the mix.
Now that you mention, it does look that way. I was too busy running away at the time to tell. Either way the propellant used could easily lift a 70g header nozzless so no worries.
excellent stuff just wondering, did you get a nozzle blowout, early on in the flight here? it still seems to be travelling upwards rather nicely regardless!
excellent! so thats where all the power is coming from then! very sturdy tubes you have there! bet you havent had a CATO, in a while?! im sure people would be interested if you did. me for one, rocket maker to rocket maker! cheers
Indeed they are 1/4" wall thickness though. I got the tubes in 5' lengths and cut them myself at 7 1/2" I guess I really need to make a tutorial on these huh?
