Hey! Thanks for watching my video, i really appreciate it! just please note that comments with links in them get filtered out as spam and dont show up in the comments section. thats how youtube works

@LAIA_aerospace

4 жыл бұрын

Home Grown Pyrotechnics love your videos , can I send you a message to your email? I’m doing my first rocket and I have troubles with the propellant greetings from Argentina, keep doing this videos, they are amazing

@HomeGrownPyrotechnics

4 жыл бұрын

Sure, go for it

@LAIA_aerospace

4 жыл бұрын

Home Grown Pyrotechnics what’s your email ?

@HomeGrownPyrotechnics

4 жыл бұрын

@@LAIA_aerospace you can find it in the about section of my youtube channel

@LAIA_aerospace

4 жыл бұрын

Home Grown Pyrotechnics ok!

@Home Grown Pyrotechnics You should put a warning about using PVC, if the grain isn't stable and isn't made properly, the motor will Cato and send PVC shards everywhere. If one of those shards enters your body, your trauma surgeon won't be able to find it with a regular x ray, as xrays (with the exception of a handful of really powerful ones that they wouldn't have) can't see pvc because it is so close to the chemical make up of our tissue. Please use a proper metal case if attempting this.

@tristan183

2 жыл бұрын

pvc ruptures at pressures much higher than this motor should ever achieve. the nozzle or bulk head would be ejected well before the pvc ruptures. FYI 1" pvc will rupture at about 1300 psi (well over specified pressure). PVC is only unsafe if you make some major mistakes

@shere_kan8329

2 жыл бұрын

PVC is definitely not suited for this purpose, that's not a question. I don't where you got those 1300 psi but I don't trust it at all. Furthermore, it makes no sense to talk about burst pressure numbers because they stand at a given temperature, which is certaintly not the couple thousands degrees inside a rocket motor. I do agree with you about the end caps being weaker than the casing, but it shouldn't work that way. Major mistakes may be a lot more common than what you think, particularly with a hazardous and unpredictable propellant such as KNSU (less of a problem with KNSB). Last but not least, PVC is detectable with Xrays. It hasn't been for some time, but it changed about 10 years ago.

@tristan183

2 жыл бұрын

@@shere_kan8329 you will find very little documentation on pvc related injuries with amateur rocketry. The heat generated by the fuel will cause the casing to deform, which helps prevent the casing actually bursting. Do pressure tests with pvc and I assure you that you will be surprised.

@shere_kan8329

2 жыл бұрын

@@tristan183 first of all, there are quite a few injuries. But I'm talking about the fact that PVC won't allow for a good motor (performance wise), not remotely. It may be cheaper than an aluminium casing, for a single shot. But it takes a lot of effort to get it working. It does work, but it has to be really conservative and thus, (very) low performance. Commercial motors pretty much always end up cheaper. And if a homemade motor is the goal, a Loki case (or aluminium home-machined) will be a lot easier and simpler to work with

@HomeGrownPyrotechnics

2 жыл бұрын

Commercial motors end up cheaper?! Are you mad?! These pvc motors cost me like 2-3usd a piece. I'm currently machining my own aluminium motor and it's mabe cost me 5-8 usd in material. A commercial motor would start at 40 usd. I've found my pvc motors to be quite reliable. Only cato when they get old. Just need to design them properly and it will work.

I love your accent man! South Africans are the best

Go ahead bro.. i love your videos. I'm from srilanka 2021.02.23

I just watched 20 min of this to find out I'm going g to stick with my 65/35 sugar rockets with clay nozzles.

@rollbot

3 жыл бұрын

you needs the perc and sulfurs and metals

Ur the only person that replied to all the comment of each and every person. +love ur video

@HomeGrownPyrotechnics

3 жыл бұрын

thats because i have a small audience and they dont (normally) post stupid comments. thanks :)

@user-oz5iy4bl1u

3 жыл бұрын

@@HomeGrownPyrotechnics hahah classic

Hi! Can I do those scratches on PVC and use kitty sand (powdered Clay, not need to add water, just hit with hammer and it will compact with hit) for make the nozzle? Or better don't do those scratches in this case? I'm looking for help because my rockets explodes by the nozzle before lift Up

@HomeGrownPyrotechnics

2 жыл бұрын

The scratches are quite important for grip of the nozzle to the pipe. I'd recommend using anchoring cement over kitty litter, much stronger. Also, when compacting the kitty litter you might Crack the pipe

@olheghtt

2 жыл бұрын

@@HomeGrownPyrotechnics that was pretty scary to watch, if you're going to make scratches on the inside of the pipe using a chisel I would consider clamping the chisel inside of a vise and then just holding the pipe and rotating the pipe around rather than rotating the chisel around the pipe.

Great vid mate, and a Véry nice job. Loving it.!

@HomeGrownPyrotechnics

6 жыл бұрын

explosivefreak666- thanks :) everyone else that says they have watched it says the same :) even Richard nakka applauded me for this video!

@explosivefreak666

6 жыл бұрын

..?. Kidding me.?.. I have a shitload of Nakka's vid's copied on cd-roms.! You're DEF in good company.!

@HomeGrownPyrotechnics

6 жыл бұрын

this is what he said to me : Nikolai, I viewed your tutorial video, there are many things about it that I like. It is well made, you clearly put a lot of effort and thought into it, and you provide instructions in an orderly well-explained manner (sadly, a rare quality when it comes to You tube videos). And I can tell you have a lot of experience under your belt with PVC rocket motor making. You present a lot of good ideas (your dessicator is better than mine, I'll have to get one of those rubber sealed containers). There are certain things that make me cringe, regarding safety, you probably know what I am referring to. So on one hand, your tutorial is a good for entry-level rocketry, but I hesitate to recommend it to anyone without a fair degree of experience with sugar motors, who would have the needed awareness of hazards. As such, I do have one suggestion to make the process better and safer. I would ditch the sugar (sucrose) based propellant for a safer, and far less messy one, such as sorbitol or dextrose (KNSB or KNDX) and use the conventional casting method. Safer and neater. If casting poses a problem with small diameter casings, a surfactant (commonly available) will eliminate that issue by making the propellant pour like water. I expect that since you've been working on this for 5 years, you probably have gotten comfortable with the materials, and that propellant choice, but maybe its time to consider my suggestion. I'll bet you will like it and can make an even better and safer version 2.0 of your otherwise very good tutorial. cheers Richard Nakka

One of the best videos on candy rocket of the whole youtube! great work man

@HomeGrownPyrotechnics

6 жыл бұрын

aw thank you! i made this in depth tutorial because i saw a lack of good videos covering this topic, they were either waaaaaay too freaking long, wizzbang75 is a good example, or they were vague regarding details. i had something that was cheap, worked great and had way fewer expensive components in it so i made a video that id be happy to watch.

Nice Video man.. I would like to do the same and see how it works, ofcourse with smaller version.. but if possible please show by video how it flies in sky :).

@HomeGrownPyrotechnics

6 жыл бұрын

kzread.info/dash/bejne/n6OG0cyvmcS-oso.html i launched a motor that i bought and i launched one that i made like in the tutorial

Your counter looks like mine, but humidity problem, thanks for the solution

@HomeGrownPyrotechnics

2 жыл бұрын

Glad I could help

Ya.... I was thinking " booooom"

The best advice in the beginning itself. I had my sugar candy gets wet. I hate it.

Lekker bru! I’m experimenting with vape coil cartridges as ignition sources - so far a very promising concept. My only struggle lately is getting pure Iron Oxide in Johannesburg, I’m trying to make my own by rusting iron. I am playing with rocket propulsion for glider launching.

@tomgordonuk1

3 жыл бұрын

You can buy Iron Oxide at most building suppliers, it's used as a colouring agent for cement mortar.

@BB-yj2rb

2 жыл бұрын

What's the purpose of adding iron oxide?

@HomeGrownPyrotechnics

2 жыл бұрын

For some reason this is the first time I see this comment. Ya I used 38 Guage nichrome wire made for vape coils, had to buy it from wish, the thin nichrome is hard to find. You should be able to get pure iron oxide from a lab supply or a lower grade as cement pigment at the hardware store. Don't use rust, that's a mix of oxide and hydroxide. I've always wanted to play around with rocket powered planes but my lack of ability to control it makes a hard project to take up

@HomeGrownPyrotechnics

2 жыл бұрын

The iron oxide acts as a catalyst to increase burn rate, wouldn't recommend it for large motors, can make them violently powerful and prone to CATO when they age

00:19 general kenobi

@Home Grown Pyrotechnics, Hello i am attempting the same procedure but am to crush the propellant and compact clay for the nozzle please advice me....

@HomeGrownPyrotechnics

2 жыл бұрын

What diameter motor are you planning to use? For the size I have in the video, using compacted fuel and nozzles are a bad idea. Too much pressure and too unreliable

@mayinjabob9380

2 жыл бұрын

@@HomeGrownPyrotechnics i am using a 40mm inner diameter and 220mm length motor. I was not able to get the fuel to rock hardness but the small test i did today with one of the pieces, it worked like yours. In short the fuel is like Plasticine. Anyways in continued to pack seems OK and the motors(2) weigh 320g can it able to lift a 2kg shuttle.

@HomeGrownPyrotechnics

2 жыл бұрын

Ok I'm going to need to talk to you directly. Email me on Nielsen.nikolai86@gmail.com

Can I prepare the with dry meterial

@HomeGrownPyrotechnics

4 жыл бұрын

Yes but it works better with this if it's wetted before cooking.

Can we use sulphur instead of iron oxide?

@HomeGrownPyrotechnics

4 жыл бұрын

Sulphur will slow down the burn. Iron oxide speeds it up. I recommend not using it while you are learning to use the fuel, it makes it sometimes burn a bit too fast and can cause explosions

@depressedyouth

4 жыл бұрын

Ok 👍 Thanks

I'm guessing ur South African becuase I am too

@HomeGrownPyrotechnics

6 жыл бұрын

damn straight i am XD

@rafaelzasas9421

5 жыл бұрын

Dark-Ice_YT_ gang gang 🇿🇦🇿🇦🇿🇦

@rollbot

3 жыл бұрын

my house has one wall.

never use a torch to wax seal...melt the wax on a camp stove to the side and a fair distance away and pour the molten wax in THIS TORCH THING NEEDS TO BE CORRECTED

@HomeGrownPyrotechnics

6 жыл бұрын

Jim Frees kzread.info/dash/bejne/ZquW2ZNxm5e8j5M.html

Great.but is that too complicated?

@HomeGrownPyrotechnics

3 ай бұрын

As far as rocket motor construction goes this is relatively simple

Can it Exploderede on the pan

@HomeGrownPyrotechnics

3 жыл бұрын

Explode? No. If you heat it too hot it can start burning yes

I also wanted to know if it's fine to use NPK 13 00 45 for KNO3 ?.. coz this is the only way to get kno3 here.

@HomeGrownPyrotechnics

6 жыл бұрын

looks like it should work, as long as its pure(not kno3 mixed with other chemicals) it should be fine. this is where i het mine but i doubt this will be of any use to you www.aquasolnutri.com/products/potassium-nitrate-granular/?id=21&entryId=22

@HomeGrownPyrotechnics

6 жыл бұрын

if the only kno3 that you can get is crap then this page will help www.nakka-rocketry.net/knpurify.html

can i use silica gel

@HomeGrownPyrotechnics

5 жыл бұрын

I'm sure you can. Might not be as effective tho.

Why not use sand paper to scratch the inside of the pipe

@HomeGrownPyrotechnics

5 жыл бұрын

because that will not serve the purpose of the scratches. the point of the scratches is to give lots of deep grooves for the cement to flow into and provide very strong physical grip to the inside of the pipe which makes sure the cement nozzle does not blow out. some sanding will not have this effect

i just ate a whole stick of butter. da.. pufff.. da pufffffffffffffff toot

@HomeGrownPyrotechnics

3 жыл бұрын

Thaaaaats...... Nice......

Red gum

20min of video for 2s burnout. Oh...

@HomeGrownPyrotechnics

6 жыл бұрын

its a tutorial. im showing the manufacture process. its short burn time shows that it has a very high thrust output. That motor will send a decent rocket so high that you would lose track of it

@arkamitra14

6 жыл бұрын

Home Grown Pyrotechnics, exactly! You did it so neatly, great!

PVC is an unsafe choice. Anybody out there thinking of making rocket fuel (any chemistry) do not use PVC. if there is a spontaneous explosion, PVC can fragment like a grenade.

No launch????

@HomeGrownPyrotechnics

10 ай бұрын

Launch was in a later video

Make a very big Blackpowder rocket (8k.g) And fix parasuit in it .and Make the rocket useing bamboo pipe .

@YouLookLoneIy

4 жыл бұрын

Welp we ran out of budget

@HomeGrownPyrotechnics

4 жыл бұрын

Budgie-t *finger guns*

how is this even a thing. the oxidizer should be powdered and combined with the fuel (sugar) - blending the components separately.

@HomeGrownPyrotechnics

3 жыл бұрын

Only needs to be powdered if you are making rammed powder motors or using a sugar other than sucrose. Sucrose I find works better if it's recrystalised. When it's recrystalised, it somes out of solution as super fine particles and is very well mixed. Grinding and then dissolving is a waste of effort

You should do the cooking outside wearing a mask glasses and gloves..These substances and their vapours are very harmful

@HomeGrownPyrotechnics

2 жыл бұрын

What vapors? It's melted solids

im sorry thats too much work for that result

@HomeGrownPyrotechnics

5 жыл бұрын

kogibankole well that's about as easy as it gets I'm afraid, any other designs you can find require more work, time, money and materials. I made this motor with cost in mind and worked out that it costs me 11 rand per motor which works out to 0,78 dollars. According to a simulator, this motor should have a thrust output of around 250 Newtons which puts it at an H class motor. I've flight tested these motors on what I would consider to be a heavy rocket( 0.7kg) and it was able to lift it to about 300m. You can find the video on my channel, it's called: maiden flight of HMS black widow rocket|| rocket launch day 4. You can also find it in my rocket launches playlist. I'm currently working on a motor that has a much lower but very long thrust output which could easily have applications in RC planes, you seen to me interested in that

@kogibankole

5 жыл бұрын

thanks for your reply

@HomeGrownPyrotechnics

5 жыл бұрын

👍

It could be an interesting video, but it's really too slowwwww!!!!!

@HomeGrownPyrotechnics

4 жыл бұрын

there is a lot of info to cover so the video is long. i feel it is just the right length for someone who is wanting to do this them selves. there are videos that are dangerously too short and give too little info, then there are videos like on the wizbang channel that are so mindnumbingly long that its over an hour of footage spread over like 5 videos. if you have genuine interest, id urge you to watch the whole thing

@rollbot

3 жыл бұрын

underworld has the knowledge to mill them first -- or to use ammonium perchlorate and aluminum powder 3 micron -- making rockets supersonic in 1.0 - 1.3 second with amateur skills

@rollbot

3 жыл бұрын

you HAVE to grind the nitrate and sugar first separate or your 'rocket go brrr'

@HomeGrownPyrotechnics

3 жыл бұрын

@@rollbot before making more milling comments, please try the method shown and see how it burns

@d.jensen5153

3 жыл бұрын

@@rollbot That's the beauty of the rocket candy method. You really don't have to grind a thing. Both the sugar and KNO3 melt, get mixed intimately, and then recrystallize into tiny tiny crystals that are intricately interlocked. That's the same goal as grinding, only faster and easier. The ultimate density is higher as well.

The perfect demonstration how kids lose there fingeres and hands.. If u make a video make it professional not like this kidsgarden way

So it takes you 2 days to make an engine.

@HomeGrownPyrotechnics

4 жыл бұрын

It can be done in 1 but you risk your fuel absorbing so much water that it will be completely unflyable. So yes, 2 days

aluminum powder not iron oxide !!

@HomeGrownPyrotechnics

5 жыл бұрын

ummm YES iron oxide and why aluminium?

most is still nitrate prill! this of course will burn but about as terrible you could make!! minus 1000

@HomeGrownPyrotechnics

3 жыл бұрын

Did you even watch the fuel dissolve

@d.jensen5153

3 жыл бұрын

@@HomeGrownPyrotechnics I'm so sorry you're faced with this level of misunderstanding from some of your viewers. If only they could understand that the fuel and oxidizer are dissolving, mixing, and recrystallizing into microscopic crystals, they'd get over their fixation with grinding. In fact they'd be amazed and delighted, just like I am with this method!

You really over complicated such a simple process

@HomeGrownPyrotechnics

4 жыл бұрын

No.. No.. This is about as simple as making a cast grain pvc rocket motor gets. I assume you are thinking about rammed powder motors?

Your not a rocket maker mate stick to knitting or basket weaving.

@HomeGrownPyrotechnics

4 жыл бұрын

the fuck? and who are you exactly?

@jeffevans3193

4 жыл бұрын

@@HomeGrownPyrotechnics a retired black powdered maker. Big BP rockets.

@HomeGrownPyrotechnics

4 жыл бұрын

@@jeffevans3193 you realise there is a difference between amature rocketry and pyrotechnic rockets right?