High Performance DIY Rocket 

"Damn that kid was cool" 😂 I think Mike's jealous

RU-vid actually recommended a new video for once, damn

“Why aren’t you making your own rocket fuel?” He’s in a country where somebody attempting to use explosives to blow up Parliament is noted as an annual event every November. It’s probably a given that messing with explosives isn’t really allowed.

That mid-power rocket motor was even more impressive in real life! The sound! 😮 Would you guys be interested in seeing a High Speed Rocket Car? 🚗

That sound is awesome! Great job James.

I should have been worried when the camera wasn't shown in the launch sequence

Obligatory Canadian complaint; it was -2 today and I was walking outside and had to take my jacket off because it was too hot.

Hope my 2 boys end up like you. I'll tell you man, any dad would be proud to have you as a kid. Kudos lil dude, kudos

Yess mate been waiting ages for this

Frendly reminder from another rocket guy - always secure your electronic bay. In constructions like your, a strip of duct tape works florestly.

Thats an awesome rocket! Congrats! I can't help notice that both your Ender 3's have the spool mounted on top. I've done the same, but I found printing a spool spacer made a big improvement in printing, preventing the spool from wobbling the frame as it pulled round, made it much smoother and less artefacts in the print.

Excellent video, excited to see the next rocket iteration!

Great content. You're really doing an amazing job, and inspiring us along the way! The best of luck to you.

Awesome project and really high quality video, really glad I found this channel

The 1st stage sound is impressive Great channel, great projects, I suscribe

Been watching you for a couple years, gotta say this video was awesome and inspiring. Cheers mate

One of your best invention

I have been waiting for the next installment! Great video!!

That rocket sounds fierce!! Good job.

I swear, this dude is going to start making V1's but label them as "rocket planes"

I felt that launch in my gut. Fantastic stuff. Great idea on using the Split and recording DVR next time, too.

Adding a streamer to your camera would improve the chance of finding it in the event it does get separated again.

Awesome flight! with a two-stager it's always nice to get the second stage ignition to work!!! great work :DD

So cool! Great job all around guys!

I get really excited when you add content about this rocket.

Dude these projects keep getting cooler. Great job

Video quality and content had improved and come along way well done!

Appreciate all gps etc technical video content

Amazing launch, and great aesthetics! I too know the struggles of the UK climate...

Outstanding job

Nice projects Nice design Nice details Nice hair Nice everything! Thanks for your content!

Been waiting for the launch for a while now! Can't wait to watch this video!

Man!!! I love your channel!!! I found you while watching Tom Stanton's video about the bouncing bomb. You have an excellent testing facility, enclosed by concrete walls. You also have a very nice launch field in beautiful surroundings. I do feel your pain regarding the typical UK weather. Must be frustrating. Anyways, keep up the good work. I love your videos!

Absolutely amazing! You should continue making rockets and see how high you can get.

Just to say I love what your doing and you’ve inspired me to make my own rocket:)

Awesome dude love your videos

Amazing job! Keep it up!

Great launch - just got into rockets this is really impressive

YT just recommended this. Nice work! Think I'll check out more of your videos.

well done keep at it i enjoy watching all your videos

Looks great !! Awesome job !

That’s massive power wow 🤩

Is it just me or does this channel make everyone jump out of their chair in excitement? I almost spilled my coffee.

I am Finnis and at the moment there is -20°C:D

"3 degrees C" "wait 3c? thats warm tf you mea-" "f you keep complaining youll get complaints from canadians" "damn" (im canadian)

Dude, I have have your watch. It is freaking great.

Finally i always get so excited when i get notified about your vidéos i hope u all the luck

yeah!!, looks like you finally got some good weather!

finally some good new vids to start of the year

that went up CRAZY!!!

i love your vids man you inspire me to creative cool things

Congratulations on the successful mission! I look especially forward to your experiments with hybrid rockets. I read that paraffin wax and nitrogen oxide can have an Isp that almost rivals some liquid fuel /oxidiser combinations.

Dude that's so amazing and cool bro You inspire me

You did inspire me to try to build my own RC vehicles...Thanks

Incredible launch! Nice one Jimmy!

I just found your channel and I love what you're doing!

Really great stuff! So glad I found your channel. Subscribed! I had a blast (pun intended) with retail kits as a kid and had some hilarious things happen like accidentally launching a 3 stage beast that broke a fin at launch and had a flight profile more like a cruise missle.........

This chanel is so underated keep going you are doing an awesome job at it!!!! I would love to see more of the technical design behind te scenes maybe a second smaller vlog channel or something, would definitly subscribe!

Awesome video.... keep it up!

0:54 A6! Excellent content!

Use an 80/20 (t-slot) aluminum extrusion for your launch rail. you can get them in 10ft lengths uncut fairly easily (and longer by order) and many of the commercial and 3d printable launch lugs are designed to fit this profile

Mate keep at it, you're gonna get big soon.

The rear section, including the fins remind me of the Estes Optima rocket I used to have as a kid.

Great work! Keep at it!

What a brutal launch, almost like a SAM missile

Hi James! I have been waiting for this for two weeks! I love your aerospace projects and it inspires me to make my own projects as well. Quick questions: What ender 3d printer do you use?

Very cool and subscribed.👏👏👏

Hey James, many years ago at a UKARA event, a chap had a new high power rocket motor that didn't require an explosives license, and it might be time to revisit the idea. It was an injection molded (because this was pre-3D printing) ABS plastic rocket engine vessel, with a thrust nozzle, all in one piece. He had the top threaded for a feed from an NO2 tank, pre-filled the vessel with O2 to get things rolling (simple fill through the nozzle), and ignited the actual wall of the vessel using a spark across some speaker wire, from a fluorescent tube starter. This could be 3D printed easily, with some fluffy chaff to help the conflagration get started inside the vessel. You just need gas, and some solenoid activated valves, and you are flying.

Wow!! most impressive! ... I am a Finn and like your coping with the three degrees too! :)

ha ha ha ha!!! THAT WAS AWESOME!!! Despite the long walk and lose of the nose/camera, it looks like it went well. Fantastic! Well done buddy!!!

Let's go been waiting for the vid! nice job

Great job and fun to watch. May wish to consider creating and utilizing a check list during launch preparation as the projects (and rockets) become larger and more complicated. In regards to the lost camera, the larger rocket engines are going to create some wicked G-forces both at launch and when decelerating at chute deployment, potentially disrupting pretty much everything glued together on a rocket. May want to try some static G-force or shock testing and or calculate the forces involved and apply them on ground tests of equipment. I would also recommend some eye or face protection at launches. Looking forward to more projects.

Yup those graphs make sense to me because once the motor stops burning the drag force is causing deacceleration. That 1st stage motor was VERY powerful!

7:30 i noticed the legend Tom Stanton in the bottom lol, i´ve seen that list before but never noticed it :D

I do love sparky/ metal storm motors! Can’t wait till I turn 18 to get me some!

SO AWESOME!!!

Skidmarks are my favourite CTI motors, did my level 1 cert on one!

wow loved it

Funny you mentioned Finnish people. Watching the your previous video I actually giggled a bit in my head when you were so cold in a thick jacket, and to me it looked like weather I'd probably be comfortable in wearing a long sleeve t-shirt or something. =)) Greetings from Finland, thanks for all the great videos!

Apogee rock sim is just really awesome for any rocket builder

all right ,, thats a badass rocket ! i wish i could make that too

One thing to note from this is that things that you don't think can happen will. Even a bigger stronger camera tray or better attached nose is not a guarantee. Consider simple and safe backup is a great way to mitigate risk for critical (or at least high cost) failures (like loosing your camera). One example of how to mitigate this would be a tether line from the camera strap/tripod mount to the parachute anchor. Good luck on your next launch and stay safe.

Well done

Impressive takeoff!

Great launch! My launch rail is a 2 meter curtain rail, reinforced with 20mm square tubing. Mounted on a tripod that is 1 meter high. Giving a total of 3 meters. We have level 2 in South Africa. So that is full J-Class motors. We do several km high flights here. So good luck with your project. Tip. Build a secured E-Bay for your electronics and cameras. Because you are limited to motor ejection, you may have to look at a body split ejection. Where the e-bay and the nosecone acts as a single, long nosecone, and is attached to the booster by a shock cord/recovery harness.

Nice video 👌

To hold nose cone and payload together cut pins used for sewing and use end with head about a 1/2" long

Finally the most awaited video ❤️rain rain finally went away 😉

that rocket was amazing so cool hope your doing well

Beautiful

To keep the parts together use plastic rivets where things must stay together and sheer pins to prevent nose cones from poping off

Pretty fantastic work, James!!! 😃 The RunCam Split 4 is a fantastic option, because it records in 4k! 😉 Anyway, stay safe there with your family! 🖖😊

Well done.... !!!

I remember the first Sputnik, we had no commercial options so motor design, chemicals, and eardrum shattering explosions was part of that learning process. Fortunately I grew up in a neighborhood of Westinghouse chemists, and Bell Aerospace engineers building the Agena rocket for America's Project Gemini manned spacecraft program. I had all kinds of expert guidance, that would let their grass grown and ignore their wives and children to bundle in my parents basement do stress and strain calculations, teaching me use of a sliderule, no calculators or computers smaller than a mainframe IBM in those days. It was great fun, the local Fire Marshall had certain reservations.

You're one of the most underrated youtubers I've ever seen

I need to try this!!!!

Omg finally I’m so happy I was waiting

A lot of GPS devices won't update if they're traveling too fast or too high. It's hard to imagine your rocket was going too fast but it's something to keep in mind. I know high altitude balloon projects run into this limitation. Thanks for sharing your projects with us. They're a lot of fun to watch.

that lift of was awsome

In 1978 I built my first Estes 2 stage rocket that I bought at a local hobby shop. It featured a first stage with a 0 second delay on the ejection charge which then lit the 2nd stage off. Unfortunately being a kid without much money on the 2nd flight I used an existing C engine I had in my box which had a 1 or 2 second delay regular engine. On that second flight after the first stage was done the rocket tipped over at apogee and then the 2nd stage fired... it went way into the woods at the edge of our launching field and was never found again despite days of searching. I loved rockets as a kid and homebuilt 2 and 3 stage rockets out of cardboard tubes are really nothing new, though building them with GPS and cameras certainly is!