Hand Ramming a Half Inch BP Rocket Motor

[@madmarkthepyro5247]

I don't care how many times I watch these videos I pick up something every time. Thanks ned.

[@nedgorski]

My pleasure, Mark. We're always learning from each other, if we're open minded. Enjoy.

[@patman0250]

I don't know if you're still giving comments for this video song, what kind of charcoal do you use for these black powder rockets. Is it just regular or airflow hardwood charcoal? I'm using Eastern red cedar and I'm getting tons of Cato's

[@nedgorski]

Hi, Pat. I use hot ERCedar BP in nozzleless BP motors, using the nozzleless motor propellant which has some mineral oil in it. I've been able to avoid CATO's with those motors.

[@tagewikstrom769]

Dosen’t the weat black powder affects the power of the motor? Or is it to little?

[@nedgorski]

It's too small an amount, and some folks claim that the small amount of water actually increases thrust.

[@christianduquette2173]

Verry nice, Where can I find the increment chart?

[@nedgorski]

It's in the website, in the article about nozzled BP rocket motors, Chris.

[@fredysmith8179]

Hello Ned, do you wet the black powder with 1% of water before hand ramming or pressing??

[@accipiternisus649]

Fredy smith no.just granulate your bp without dextrin.Only water and small mesh screen.That will remove dust and keep small particles together

[@bonzoligist6330]

Yeh with his bp rocket mix he uses 1 half percent of water in 100g batch that works out to b around 3 sprays. ..

[@martinbillups4396]

Hi Ned from the uk have you please got a paper guide for converting kraft paper from lbs to grams thank you for your great vids you are truly a master

[@nedgorski]

Thanks, Martin. I don't know of such a conversion chart. If you see the term, say 40# paper, just think 0.004" thick paper (0.1mm), and 70# paper = 0.007" thick (0.18mm)

[@martinbillups4396]

ned gorski ok Ned thank you for your time and reply stay safe

[@minhwang1234]

Cho toi xin cong thuc thuot lam rocket.nhu trong video.

[@MrInnovativeguy]

Hey Ned I've been making 1 pound rockets with Caleb's universal core burner tool set 66.67-19.05-9.52 mix I ball milled about 5 hours they do pretty good I'm still wandering if could load them with an 75-15-10 mix and get a flight I'm also thinking about trying out some whistle mix is there an pressure chart for the one ton arbor press corresponding with torque wrench settings?

[@mocknugget]

I only make 4oz rockets though, but in my experience nozzeled rockets with 75-15-10 fuels will always 100% CATO. Unless you're going nozzleless then it'll be fine

[@PyroThunder]

how big of a shell can these motors lift?

[@antoniosa932]

PyRoOWL 1995 ａ2 inch y think

[@Pyrokartoffel]

I use that Mix for my rockets: 60 kno3, 25 charcoal, 15 sulfur. the charcoal tail of the rocket was very short-lived. Would it help if I wet the mixture beforehand and let it dry again and then ram it into the rocket motor so that the potassium nitrate can suck into the charcoal and thereby give it a longer tail? I Hope my english is okay

[@nedgorski]

I'd actually suggest switching to a mix of fine and coarse charcoal, and perhaps using a bit more KNO3 and a bit less charcoal. Some experimenting and dialing-in will be required. Good luck.

[@jeeplove_8831]

Hey Ned, love your videos!! I was wondering, do you screenmix or mill the base components for the W39J delay? Been wanting to use it in my 1lb rockets. Also, do you include the dextrin as well? - Thanks!!

[@nedgorski]

For such a delay, Jeep, I'd leave out the dextrin, and screen mix as long as the ingredients are already fine. HappyNewYear

[@jeeplove_8831]

@@nedgorski thanks Ned!! Happy New year!!

[@basvanvliet7622]

Hey Ned, where can i get a tube like that? Thanks!

[@nedgorski]

PyroDirect, Skylighter, etc., sell the lower quality pulpy tubes. HobbyHorse.com is the source for the high quality, NEPTubes. ned

[@jeroengrimmelikhuijzen6819]

How much weight can a motor like this propel?

[@nedgorski]

I can put a 1-3/4" festival-ball size heading on one, Jeroen.

[@dylanhealy4473]

Ned as u can imagine I've got limited funds but would definitely like to try a few of ur projects. I see I can get chemical kits through skylighter. I'd like some of ur wisdom to steer me in the right direction as to what to get & what I need to get things done on a budget. Thanks for whatever help u can give

[@richardPalmisano]

Ned where can I get a copy of your chart you we're following for the clay and thee fuel. What is a good delay mix? Can I use more sulphur with my bp mix to give it more of a smoke burn? Thanks for any info.

[@nedgorski]

richard Palmisano There is a detailed article in Fireworking.com , Rich. ned

[@richardPalmisano]

Thanks I'm using the ¾ spindle for the¾ tube all I need is three rammers right I would really appreciate it if you can give me the lenght of all three rammers each and then I will mark the no pass line thanks man. And what is the degree of the beveled end on the long rammer with the hole in it.

[@ircrocketeer463]

Ned, love all your Tutorials ! My question is why and when i should using an Endburner instead of a Coreburner ? Is the BP composition for EB´s different then for CB´s ? Thank you so much for a short answer. All the very best to you. Ralph .

[@Leoau-h3p]

IRC Rocketeer IRC Rocketeer End burners are really not ever used in fire working because core burners are simply better and allow more room for adjustment of the fuel. In answer to your second question yes the fuels are different. End burner fuel is much more powerful and closer to straight BP in composition. The most common core burner comp is 60:20:10 and I'm not sure of the EB comps off the top of my head but a google search would find the info you need. Also, although I did answer this question, Ned will only really answer question he believes deserve an answer, in this case a google search would have easily found the answer and as such there was no reason to ask it unless for some reason you couldn't find the answer by other means. Just in the future look yourself before asking.

[@ircrocketeer463]

Leo ! Thank you very much for your Answers, that will help me to understanding the diffens. And yes, next Time i will search in Google first ! Ralph

[@nedgorski]

IRC, endburners can be used as stand-alone rockets, but they'll only lift a small/light payload, compared to a core-burner. Endburners really come into their own as long-duration-thrust motors on a girandola. The propellant in an endburner is typically a hot BP one, compared to a less powerful propellant used in a core burner. I hope that helps. ned

[@Leoau-h3p]

ned gorski I stand corrected you did get a reply! I apologise for my comments saying they are basically never used I was unaware of there use on griandolas although it would make sense I have never done any research on griandolas and how they are lifted.

[@nedgorski]

'Dolas are one of my fave devices, Leo. Very challenging, and they combine ground effects, rocket effects, and aerial shell/heading effects, all in one. And, their display can last a minute or longer. They can be very addictive. At the PGI convention, I've seen some of the best machines from the best makers, and they're very impressive. n

[@User-de3jv]

hey ned! when i build a coreburner moter, lets say 15mm, where is the point of ignition in the motor? shall i isolate the fuse, so that it only lights the bp at the top of the core or am i fine just pushing a piece of not-isolated viscofuse into the nozzle? thanks

[@wlhlmknrd6456]

PyroGangster 1234 Schön mal nen deutschen Pyro hier zu sehen; Du musst endseder die Visco isolieren oder quickmatch benutzen. Lg

[@accipiternisus649]

Lighting from the top is the best and gives you strong rocket start but you must use black match

[@haydenemms6300]

Hi Ned, I'm looking at making my own tooling for 1/2" motors but I can't find a suitable source of measurements. Could you tell me what the measurements etc your tooling is? Thanks, Hayden

[@nedgorski]

In the website, in an article about charcoal tailed, cored motors, I have reproduced a chart from Hartdt's "Pyrotechnics", which lists the dimensions for all the various size motors, Hayden. That's the standard from which the toolmakers diverge very little.

[@haydenemms6300]

@@nedgorski thanks a lot! I'll check it out. Keep up the good work

[@pyrofrench6369]

hello, sorry for that question , i don't understand that: load no more than one ID of comp per increment, if i have a rocket tool 1lb: i must load 3/4 of teaspoon per increment? thanks a lot...

[@nedgorski]

When rammed, the added increment should be no taller than one tube ID tall. I prefer 1/2 to 3/4 ID tall, though.

[@MinhNguyen-zn3gf]

Could you tell me if polyvinyl alcohol (pva) can act as an adhesive for fireworks stars?

[@rskrks]

Dextrin is super cheap and extremely easy to make.

[@thecamelstory6693]

did you wet your bentonite before ramming ? cause i am having the problem of dryness of the bentonite, it crumbles and isnt smooth ! 0o0

[@nedgorski]

Nope, no moisture. Real, pure bentonite clay will consolidate nicely, and solidly, when rammed or pressed. Melted wax can be added to it to assist in that, too.

[@TreYay83]

Couldn't you just use delay comp as the bulkhead, instead of the clay

[@nedgorski]

Some folks do, but doing so introduces some "issues". I prefer using a clay bulkhead.

[@TreYay83]

@@nedgorski ty sir for the reply. I guess the clay bulkhead would help protect maybe a premature discharge of the heading. Really fascinated with these rockets, thinking about getting into building. Just soaking as much info as possible!

[@nedgorski]

@@TreYay83 It's a bottomless journey of learning, experimenting, and satisfaction, Tre. Enjoy.

[@Mnemotron2010]

what kind of formula do you use for the dalay?

[@nedgorski]

That's Winokur 39J, which is loaded in the formula database on the website. ned

[@Mnemotron2010]

ned gorski thanks ned

[@suklalmurmu4949]

Sir, I want flower pot formula for compitition will please give me?

[@sandmanbub]

@Whoop!

[@bonzoligist6330]

Im hitting way too hard then,,,,lol..

[@highboy8706]

Hello Ned. Whether after whipping one part of the fuel in the engine, a small part of the fuel should fall out after flip the engine?

[@rskrks]

If the rammers fit nicely in the tube and spindle there shouldnt be much falling out. If you get alot of fuel not being compressed and fall out thats not good, you could have gaps on the walls which will lead the rocket to fail.