@@Holospinner.myshopify ⚠️ God has said in the Quran: 🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 ) 🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 ) 🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 ) 🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 ) 🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 ) ⚠️ Quran
stacking load cells is generally not recommended from a system dynamics standpoint though. Inherently for a load cell to function they need to have a certain spring factor/movement. Stacking load cells means taking 2 of these springs together. If you're measuring transient or frequency spectrum behaviour, this is going to influence your measurements considerably unless you compensate for it (which is either difficult or impossible depending on what you're measuring. It'll probably work for your application but I think I would probably have made a dummy for both cells so that you could use only the cell you need. The 20 ton cell isn't going to tell you much useful if you need the 3 ton cell and vice-versa.
0:01 my brain just realized that not only did Joe have to say the line over and over, he also has to hear it 10-20x again during editing. He’s built different 🤯
If your casing stays under 300F, I would highly recommend high temp threaded rubber bumpers (McMaster) to go on the ends of the motor stabilizing threaded rod. And also a nut and washer on the inside of the frame to keep tension on the threads so the rod doesn't back out from vibration.
If you use lag bolts instead of hammering those tent stakes in, there are some benefits: they're way stronger, and also you don't have to use a hammer. Btw make sure the stakes or bolts are angled *away* from the stand.
Hey, something that you might be interested in... they make shrink tube label maker carts that go into standard label makers! It keeps the wires a lot more streamline, which ends up with more tidy wires and less snagging if you need to pull a wire through a busy rats nest of other wires
Those are amazing for creating a proper harness. I am currently in a formula student team and we found out we had some of those cartridges after we had finished the wiring harness for the car...
@@deadhamster7570Ah, fond memories of soldering 20+ pin connectors, using red loctite to hold the backshell on and only then noticing the heatshrink on the bench...
The way you document your work is probably the best I've seen. Not only do you have the cool shots others provide too, but you really go into details and drop little, helpful tips here and there. The work you put in to let us be part of your project is incredible! I'm not even into rockets at all and much more into regular aviation, but enjoy this so much and find all the considerations super interesting. Your attention to detail - trust me, a lot of us notice even if you dont highlight it - is impressive too. Thank you!
I know the feeling but don't let it get to you. Remember, you're just seeing the highlight reel of hundreds or more hours of work. Now if only I could follow my own advice I'd get shit done.
Joe, I built 4 test stands for my KNO3/Sorbitol “N” motors. Very similar setup to yours. My biggest mistake was NOT securing the motor to the test stand. One test, blew my fwd closure out. We did not know the motor launched itself over 600’ high until we heard the incoming whistle of the 6061T-6 motor tube returning to earth. Crashed less than 20’ from us. Our load cell was a brake cylinder hooked to a steam gauge and recorded on video to get our thrust curve data.😂 The motor I designed and had built was supposed to withstand 5,000 psi, but the motor would operate at 1,100 psi. If you want to know what my intentions for the motor was, drop a line. Richard Nakka, flew down from Canada to N.C. to observe my experiments with his propellant in my motor. Good luck! Heads up!
Very, very nice work... you remind me of me, 40 years ago. I'm glad that you've moved into solid fuel motors... in time, I'd like to see you move into liquid fuelled engines. That will really challenge you. Keep rockin, guy. Beautiful work.
I’ve been a space nerd since NASA was blowing up Atlas boosters trying to get Mercury in the air, and I’ve CATO’d the occasional Estes wee banger myself. So I am having an unreasonably good time with your channel, and totally grok the frustrations and the triumphs. …. Even the self-inflicted ones. … ESPECIALLY the self-inflicted ones.
I really like your shows. I am a retired aerospace engineer and your shows just scream I am an aerospace engineer, I love what I do, I have a goal, and I will do what it takes to understand and accomplish that goal.
I didn't get to see this in action, but I'm a big fan of simple and compact static stands. Not sure if Rick would have brought it up, but I think some double nuts on those threaded rods would do nicely in case they get jammed from desert dust and grime. For APCP, besides a CATO, there could also be an aft closure burn through which would impinge upon the electronics, essentially like a torch or flamethrower, but the 8020 extrusion makes that an easy adjustment. I'm really glad that you made it a point to use steel cable stays instead of nylon for fire safety, and explained why. I'm certainly excited to see how this evolves, and thanks for sharing.
One of the things I like about your channel is that you'll take a whole video to go over the test stand--not the 'sexy' part, and a lot of people wouldn't have bothered. But realistically, there's always going to be some engineering challenges to overcome, and I always learn something interesting and unexpected.
Joe, I saw you clipping the extra sharp bits off of your wire-ties. An electrician taught me a neat trick. Rather than cutting the excess off and leaving a sharp edge, grab the excess with pliers and keep twisting it until it breaks off. Leaves a clean edge every time.
A couple of things: 1) You need a key-out/lock-out upstream of that remote ignitor switch. You do not want power on that remote system that allows a rogue RF signal to trigger the arm switch. That should require a manual key turn AND then the remote arming. 2) I would build a much better clamp to hold the motor casing. Just putting RTV on the end of threaded bolts is not good - it puts a point source of force on the case that can fail or slip. I would thread the rods into curved yoke or perhaps a 90 deg clamp. What you have reminds me of trying to put a Xmas tree in a cheap stand - and that never works!
Finding this kind of stuff "interesting" is a phenomenal understatement. I am fascinatingly blown away at the amount of work and effort put into your rockets.
I've really enjoyed the video series... keep up the very interesting work! My uncle gave me a book back in the early 70's entitled... "Rocket Manual for Amateurs"... printed in 1960 - that describes in great engineering detail the designing, manufacturing, testing, fueling, and firing solid fueled rockets - including setting up launch sites. The author was Capt. Bertrand R. Brinley - a project officer from the First U.S. Amateur Rocket Project. This book fueled many rocket building dreams when I was a young man. So cool that you're doing what I could only dream of back then. Wish you the best of skill and knowledge.
extra thought: a metal pin, perhaps with a catch to prevent it from just falling off, that physically blocks the servo travel and is only removed once you're 100% ready to walk away from the stand and test it! Then add a red REMOVE BEFORE TEST tag to it
Joe make a video on what tools to use like detailed video regarding lathe machine,3d printer and all the necessary tools that require to build a rocket.
wow. great timing. just now as i wanted to go to bed a new banger of a vid gets released... This build a rocket motor series is awesome. reminds me off the time that i wanted to buy some ammonium nitrate as a kid to build a sugar rocket... here in germany u need a license to buy that stuff lol
This Simplex series is truly wonderful. My college team is also currently developing motors, unfortunately we had to do our research before this series existed. Such a great resource for getting a ‘solid’ understanding of this stuff. 😉
regarding the blue tape. I work in space industry, and once I was a vibration test engineer. When you do vibration/shock testing you want your accelerometers to be fitted real strong, right? yes, so method of choice is using Kapton tape on the specimen, and superglue the sensor on it. Sometimes they get detached, however by using super glue activator that almost never happens. So yeah.
Since you know where the blast will come from if it ever goes boom, it would be pretty easy to fit all those electronics into a blast proof box with the front side made from a thick sheet of Lexan to let the radio waves out.
With you putting all your energy into model rockets, the world has really missed a great music producer. I really like your style and would love to hear more!
As a machinist I really LOVE your use of blue tape. Looking what I've used and seen parts get loose it just makes me love the way you get things to stick with some tape. That's just fantastic! I don't think I'll try at work, as it's hard to explain to the boss if things get loose, but if I get a mill for my home it's a given thing! How have you tested the igniter circuit? A LED that goes on when all other parameters are within range?
Recommend a positive connection to the test stand with your cables (not just looping them over the bolts). You do not need a runaway test stand if a 1 in 10000 failure mode occurs.
Ive had issues with vertical stands. If you get a blow out it launches everything in the air. Its a lot safer to have it on its side pointed in a safe and predictable direction. What made me switch was a particularly bad blowout when the nozzle sleeve failed lunching burning debris a couple hundred feet in the air. You should really look into modifying it to fire horizontally.
I absolutely love these videos and your channel. The amount of work you put into the rocket is amazing, but the unseen work that goes into the story telling, videography, and editing is fantastic. I am not sure most people realize just how much forethought and effort goes into piecing these videos together.
Another wonderful episode. You can build it anyway you want. Particularly when it’s lifespan could be very short so taking pleasure in the construction is a test as well. 👍😊
I miss when I had time to work on my rocket. BPS inspired me to build my own flight computer and go to get my l1 but I miss my rocket free time with having a full time job along with school.
Hamering the cable pickets into the ground with the cable attached isn't optimal, and likely difficult to keep the tower perfectly upright. Using a steel cable tensioner can realy help you out ;-) ! Nice work again!
This has been an AMAZING series !!! It's really got us, the lil one an I, motivated to step up our game !we started out with store bought rockets, to designing our own rockets, to making our own motors....!!! From "rocket candy" to APCP....we've built different types of test stands, upright like yours, horizontal, and a TriPod like SpaceX at McGregor....we're still in the R n D phase....on the motors an fuel mixing....hopefully we'll get a 100% fully functioning rocket of our own design off the pad this summer. You truly are inspiring us....!!! Thank you!!!! edit: I should probably mention, the "lil one" is 8, an she's been absolutely FASCINATED by rockets ever since she was 3ish....wen we watched the Falcon Heavy test flight !!!
Blue tape works fine if you accommodate your toolpaths to suit it. Machining isn't about the journey, its about the result. Most customers won't care how you made it, just that its within tolerance. Do what you need to do to get the part done, if people shit talk you just show them your results and remind them you're making parts and not money.
Besides what you did, I'd have a totally manual only disconnect at the rocket. So when people inevitably start testing the setup, the person at the rocket in in charge of their own safety.
You'd be surprised by how useful a hoist winch is when in rocketry. I have used one to un-stuck a M2500T-P liner and a stuck 6in coupler out of a nosecone.
When I was in highschool I built a rocket and crawler/launchpad and launched at school for some much needed extra credit. To make things cooler and give myself a bit more range I did someone similar with a servo for the ignitor though the servo just moved a metal arm to bridge contacts. Lochman 1 saved my grade lol
Just measure without load and then put a known mass (e.g. 20kg weight plate) on top and measure again? Assuming the curve is linear and you don’t need/want any temperature compensation …
As a long time fan of the copsub project, here's a few practical tips for Joe: 1. NEVER trust a computer to arm your safety switch. Use a blocking pin pulled out from a distance using a string and a quick connector to leave that wire unplugged until just before walking away to the other end of the string (making that the only time stumbling can arm the rocket). 2. Welded iron bars is cheaper than screwed alu extrusions. Akuminium may not spark, but it is flamable enough to be a rocket fuel. 3. Instead of those plastic blobs, just strap the rocket in with fabric ratchet straps around the test stand. frame. 4. Just for fun, use RGB fans to cool control boxes. 5. Their biggest ever "flight ready" engine was a failed 45kN rocket that failed spectacularly but remains strapped to the old test tower in their driveway (failed engine was removed and autopsied by an MD).
you may want to consider mounting the electronics horizontally instead of vertically with a shield over them so if the rocket blows up, the majority of the blast will pass over your gadgets, though maybe that wont work because some need to be within a certain proximity.
I know this has been out for a while now, but I'm wondering if a potentially useful upgrade path for this would be to include lateral load cells on the little stabilisers that hold the rocket. Finding that certain nozzle materials or fuel grain geometry (or whatever else) can lead to some slight lateral force could be really useful and may not be noticeable visually, particularly with the whole test stand firmly tied down.
Joe, building a reinforced box for electronics and hiding it behind a small concrete or bricks wall is the best way to protect those devices. Believe me it's very frustrating to see all that blown to pieces by a CATO. And BTW, try to put a protector (1/2" steel sheet) between the motor itself and the sensors. You'll thank me later! 😉
Big fan of your video series. If you need help with the power systems, I worked as a power electronics engineer for SpaceX and I'd be happy to review/help tweak your avionics system.
Not sure why you built such a nice stand when you could've just used blue tape to hold down the motor.
😂😂😂
😂
I'm not sure what hurt more... this burn or the hot coffee I nearly shot out my nose when I read it. 🤣
The moment I scrolled down and read this comment, he said "what's that? you think we should use blue tape?" (5:33) Amazing.
😂😂😂😂😂😂
quiet on the set, bizzlington dropped another banger
Nice
Bizzlington?
@@WilliamDye-willdye Short for Business T. Lincoln, the creator of the monetized rocket.
@@Holospinner.myshopify ⚠️ God has said in the Quran:
🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 )
🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 )
🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 )
🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 )
🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 )
⚠️ Quran
@@1islam1 Please stop being religious on RUclips, I have seen it from the Christian’s before, please don’t start doing it as well.
The servo connected to the large arming switch is comical and awesome
If it's stupid but it works, it ain't stupid
stacking load cells is generally not recommended from a system dynamics standpoint though. Inherently for a load cell to function they need to have a certain spring factor/movement. Stacking load cells means taking 2 of these springs together. If you're measuring transient or frequency spectrum behaviour, this is going to influence your measurements considerably unless you compensate for it (which is either difficult or impossible depending on what you're measuring. It'll probably work for your application but I think I would probably have made a dummy for both cells so that you could use only the cell you need. The 20 ton cell isn't going to tell you much useful if you need the 3 ton cell and vice-versa.
So cool seeing the channel evolve!
0:01 my brain just realized that not only did Joe have to say the line over and over, he also has to hear it 10-20x again during editing.
He’s built different 🤯
That fully labeled wiring harness is a thing of beauty. Seriously. KNOWLEDGE! KNOWLEDGE EVERYWHERE!
If your casing stays under 300F, I would highly recommend high temp threaded rubber bumpers (McMaster) to go on the ends of the motor stabilizing threaded rod. And also a nut and washer on the inside of the frame to keep tension on the threads so the rod doesn't back out from vibration.
You beat me to it. It's funny how he makes all those nice parts and then throws on gobs of RTV.
@@coreywelch that has a name, field engineering xD
If you use lag bolts instead of hammering those tent stakes in, there are some benefits: they're way stronger, and also you don't have to use a hammer. Btw make sure the stakes or bolts are angled *away* from the stand.
Yes about the angle. The stake should be perpendicular to the wire rope when fully into the ground.
So inspiring watching your progress and tenacity Joe. Absolutely brilliant. Keep it up!
Thanks man :)
Hey, something that you might be interested in... they make shrink tube label maker carts that go into standard label makers! It keeps the wires a lot more streamline, which ends up with more tidy wires and less snagging if you need to pull a wire through a busy rats nest of other wires
Those are amazing for creating a proper harness. I am currently in a formula student team and we found out we had some of those cartridges after we had finished the wiring harness for the car...
@@deadhamster7570Ah, fond memories of soldering 20+ pin connectors, using red loctite to hold the backshell on and only then noticing the heatshrink on the bench...
The way you document your work is probably the best I've seen. Not only do you have the cool shots others provide too, but you really go into details and drop little, helpful tips here and there. The work you put in to let us be part of your project is incredible! I'm not even into rockets at all and much more into regular aviation, but enjoy this so much and find all the considerations super interesting. Your attention to detail - trust me, a lot of us notice even if you dont highlight it - is impressive too.
Thank you!
Your humor is totally in point in this video. You’re killing it dude!
As an aerospace engineer, I get impostor syndrome watching Joey. Incredible work, as always
I know the feeling but don't let it get to you. Remember, you're just seeing the highlight reel of hundreds or more hours of work.
Now if only I could follow my own advice I'd get shit done.
Good stuff Joe. Acorn nuts are cheap and are good for making threaded rods less stabby.
2:11 - It's mesmerizing to see the drillbit going clockwise and the drill chuck appear to going counterclockwise at the same time 😮
Joe, I built 4 test stands for my KNO3/Sorbitol “N” motors. Very similar setup to yours.
My biggest mistake was NOT securing the motor to the test stand.
One test, blew my fwd closure out. We did not know the motor launched itself over 600’ high until we heard the incoming whistle of the 6061T-6 motor tube returning to earth. Crashed less than 20’ from us.
Our load cell was a brake cylinder hooked to a steam gauge and recorded on video to get our thrust curve data.😂
The motor I designed and had built was supposed to withstand 5,000 psi, but the motor would operate at 1,100 psi.
If you want to know what my intentions for the motor was, drop a line.
Richard Nakka, flew down from Canada to N.C. to observe my experiments with his propellant in my motor.
Good luck! Heads up!
Very, very nice work... you remind me of me, 40 years ago. I'm glad that you've moved into solid fuel motors... in time, I'd like to see you move into liquid fuelled engines. That will really challenge you. Keep rockin, guy. Beautiful work.
I like how you are just straight up slowly one step at a time making them bigger bolder and more extreme
Although I'll never be able to build something like this myself, your videos motivate me to go do new things
I’ve been a space nerd since NASA was blowing up Atlas boosters trying to get Mercury in the air, and I’ve CATO’d the occasional Estes wee banger myself. So I am having an unreasonably good time with your channel, and totally grok the frustrations and the triumphs. …. Even the self-inflicted ones. … ESPECIALLY the self-inflicted ones.
I really like your shows. I am a retired aerospace engineer and your shows just scream I am an aerospace engineer, I love what I do, I have a goal, and I will do what it takes to understand and accomplish that goal.
I didn't get to see this in action, but I'm a big fan of simple and compact static stands. Not sure if Rick would have brought it up, but I think some double nuts on those threaded rods would do nicely in case they get jammed from desert dust and grime. For APCP, besides a CATO, there could also be an aft closure burn through which would impinge upon the electronics, essentially like a torch or flamethrower, but the 8020 extrusion makes that an easy adjustment. I'm really glad that you made it a point to use steel cable stays instead of nylon for fire safety, and explained why. I'm certainly excited to see how this evolves, and thanks for sharing.
I absolutely love these series of long videos about designing and building the rocket motor.
For added safety, maybe add a physical blocker to the remote arming switch so you can’t get a rogue arming signal while you’re doing a walk around?
For labeling wires, there is heat shrink tubing that can be printed on with some label makers. very neat.
Just finished senior design doing a lot of wireless radio. Stable power supply and proper grounding is huge.
One of the things I like about your channel is that you'll take a whole video to go over the test stand--not the 'sexy' part, and a lot of people wouldn't have bothered. But realistically, there's always going to be some engineering challenges to overcome, and I always learn something interesting and unexpected.
I love that *Firefly* has an engine called the *Reaver.*
Joe, I saw you clipping the extra sharp bits off of your wire-ties. An electrician taught me a neat trick. Rather than cutting the excess off and leaving a sharp edge, grab the excess with pliers and keep twisting it until it breaks off. Leaves a clean edge every time.
A couple of things: 1) You need a key-out/lock-out upstream of that remote ignitor switch. You do not want power on that remote system that allows a rogue RF signal to trigger the arm switch. That should require a manual key turn AND then the remote arming. 2) I would build a much better clamp to hold the motor casing. Just putting RTV on the end of threaded bolts is not good - it puts a point source of force on the case that can fail or slip. I would thread the rods into curved yoke or perhaps a 90 deg clamp. What you have reminds me of trying to put a Xmas tree in a cheap stand - and that never works!
Man, 4 years following your work, and it just keeps getting better and better! Loved all the punch lines here and there!
Finding this kind of stuff "interesting" is a phenomenal understatement. I am fascinatingly blown away at the amount of work and effort put into your rockets.
This is my favourite J Bizzlington video in a while. Tape and glue is a valid workholding, just ask NYC-CNC
I love the blue tape.
Thanks clickspring!
I don't care about the blue tape, but doing the ring check by hitting the adaptor with the callipers really got to me.
I've really enjoyed the video series... keep up the very interesting work! My uncle gave me a book back in the early 70's entitled... "Rocket Manual for Amateurs"... printed in 1960 - that describes in great engineering detail the designing, manufacturing, testing, fueling, and firing solid fueled rockets - including setting up launch sites. The author was Capt. Bertrand R. Brinley - a project officer from the First U.S. Amateur Rocket Project. This book fueled many rocket building dreams when I was a young man. So cool that you're doing what I could only dream of back then. Wish you the best of skill and knowledge.
extra thought: a metal pin, perhaps with a catch to prevent it from just falling off, that physically blocks the servo travel and is only removed once you're 100% ready to walk away from the stand and test it! Then add a red REMOVE BEFORE TEST tag to it
Those dusk LEDs… chefs kiss! Great work all around as usual.
Joe make a video on what tools to use like detailed video regarding lathe machine,3d printer and all the necessary tools that require to build a rocket.
Absolutely becoming one of my favorite channel! Your the buildercreator of rockets and your comedy is Gold!
wow. great timing. just now as i wanted to go to bed a new banger of a vid gets released... This build a rocket motor series is awesome. reminds me off the time that i wanted to buy some ammonium nitrate as a kid to build a sugar rocket... here in germany u need a license to buy that stuff lol
Really cool build. Cant wait to see your space shot
This series of videos is really taking off.
This Simplex series is truly wonderful. My college team is also currently developing motors, unfortunately we had to do our research before this series existed. Such a great resource for getting a ‘solid’ understanding of this stuff. 😉
regarding the blue tape. I work in space industry, and once I was a vibration test engineer. When you do vibration/shock testing you want your accelerometers to be fitted real strong, right? yes, so method of choice is using Kapton tape on the specimen, and superglue the sensor on it. Sometimes they get detached, however by using super glue activator that almost never happens. So yeah.
Since you know where the blast will come from if it ever goes boom, it would be pretty easy to fit all those electronics into a blast proof box with the front side made from a thick sheet of Lexan to let the radio waves out.
With you putting all your energy into model rockets, the world has really missed a great music producer.
I really like your style and would love to hear more!
As a machinist I really LOVE your use of blue tape.
Looking what I've used and seen parts get loose it just makes me love the way you get things to stick with some tape.
That's just fantastic! I don't think I'll try at work, as it's hard to explain to the boss if things get loose, but if I get a mill for my home it's a given thing!
How have you tested the igniter circuit? A LED that goes on when all other parameters are within range?
Thank you, VERY VERY good, I like your projects. Best regards from Austria.
Neat rocket motor stand for a chasing LED channel.
Great quality of work in mechanical and electrical engineering! Mechatronics is such a cool fusion of skills. I need a CNC mill...
Recommend a positive connection to the test stand with your cables (not just looping them over the bolts). You do not need a runaway test stand if a 1 in 10000 failure mode occurs.
Yet another banger from Joseph bizzlington
Probably my favourite editorial-sponsor message ever!
Oh, the test stand? Looks coool!
Ive had issues with vertical stands. If you get a blow out it launches everything in the air. Its a lot safer to have it on its side pointed in a safe and predictable direction. What made me switch was a particularly bad blowout when the nozzle sleeve failed lunching burning debris a couple hundred feet in the air. You should really look into modifying it to fire horizontally.
I love the blue tape workholding. We use it in woodworking all the time.
if it’s good enough for woodworking, it’s good enough for rocketry!
I absolutely love these videos and your channel. The amount of work you put into the rocket is amazing, but the unseen work that goes into the story telling, videography, and editing is fantastic. I am not sure most people realize just how much forethought and effort goes into piecing these videos together.
Another wonderful episode. You can build it anyway you want. Particularly when it’s lifespan could be very short so taking pleasure in the construction is a test as well. 👍😊
I miss when I had time to work on my rocket. BPS inspired me to build my own flight computer and go to get my l1 but I miss my rocket free time with having a full time job along with school.
Hamering the cable pickets into the ground with the cable attached isn't optimal, and likely difficult to keep the tower perfectly upright. Using a steel cable tensioner can realy help you out ;-) ! Nice work again!
SOOO KEEEN! Loving your energy mate and so glad we’re on this ride cause it’s gonna be liiiiiiiit
This has been an AMAZING series !!! It's really got us, the lil one an I, motivated to step up our game !we started out with store bought rockets, to designing our own rockets, to making our own motors....!!! From "rocket candy" to APCP....we've built different types of test stands, upright like yours, horizontal, and a TriPod like SpaceX at McGregor....we're still in the R n D phase....on the motors an fuel mixing....hopefully we'll get a 100% fully functioning rocket of our own design off the pad this summer. You truly are inspiring us....!!! Thank you!!!!
edit: I should probably mention, the "lil one" is 8, an she's been absolutely FASCINATED by rockets ever since she was 3ish....wen we watched the Falcon Heavy test flight !!!
Blue tape works fine if you accommodate your toolpaths to suit it. Machining isn't about the journey, its about the result. Most customers won't care how you made it, just that its within tolerance. Do what you need to do to get the part done, if people shit talk you just show them your results and remind them you're making parts and not money.
Besides what you did, I'd have a totally manual only disconnect at the rocket. So when people inevitably start testing the setup, the person at the rocket in in charge of their own safety.
I love how you already except your failures, even though they’re not even here yet
This was a great episode, I'd love to know more about the electrical gremlins you spoke of and the interference between the components.
You'd be surprised by how useful a hoist winch is when in rocketry. I have used one to un-stuck a M2500T-P liner and a stuck 6in coupler out of a nosecone.
Love how the servo boops the switch
When I was in highschool I built a rocket and crawler/launchpad and launched at school for some much needed extra credit. To make things cooler and give myself a bit more range I did someone similar with a servo for the ignitor though the servo just moved a metal arm to bridge contacts. Lochman 1 saved my grade lol
That intro was dope af. Great vid. You packed a whole lot of data into a short time. No need to make it look good for us, just work. Keep rockin.
No one has ever regretted labeling "too many" things. Label makers rock.
NYC CNC use painters tape and super glue a lot. Pretty sure John Saunders knows a thing or two about workholding.
Please use an electrical cabinet to protect the electronics during any test. This will make the overal test setup safer for debris 😉
For labeling cables, check out heat shrink labels.
Hey Joe, curious what your load cell calibration setup looks like. Did you use the manufacturer calibration or do something yourself?
Just measure without load and then put a known mass (e.g. 20kg weight plate) on top and measure again? Assuming the curve is linear and you don’t need/want any temperature compensation …
Blue tape FTW! Although there has to be a better looking high-temp silicone foot out there to use instead of the blobs.
As a long time fan of the copsub project, here's a few practical tips for Joe:
1. NEVER trust a computer to arm your safety switch. Use a blocking pin pulled out from a distance using a string and a quick connector to leave that wire unplugged until just before walking away to the other end of the string (making that the only time stumbling can arm the rocket).
2. Welded iron bars is cheaper than screwed alu extrusions. Akuminium may not spark, but it is flamable enough to be a rocket fuel.
3. Instead of those plastic blobs, just strap the rocket in with fabric ratchet straps around the test stand. frame.
4. Just for fun, use RGB fans to cool control boxes.
5. Their biggest ever "flight ready" engine was a failed 45kN rocket that failed spectacularly but remains strapped to the old test tower in their driveway (failed engine was removed and autopsied by an MD).
Awesome project ! Awesome video ! Thanks mate !
Flash the LEDs at T-zero so you have exact visual indication of T-zero ignition in your video footage.
Really enjoying this series!! Thanks, Joe!
If you like a normal label maker you'd love a heat shrink lable maker!
I love bluetape and CA glue. It's used all the time in guitar building! Learned it from Crimson Custom Guitars yt channel!
Absolutely love this content!!! Also would not mind longer videos of ~30 mins, I get hooked so fast, but the videos are just amazing!!
you may want to consider mounting the electronics horizontally instead of vertically with a shield over them so if the rocket blows up, the majority of the blast will pass over your gadgets, though maybe that wont work because some need to be within a certain proximity.
I LOVE these videos! Seeing engineering like this is really nice
I know this has been out for a while now, but I'm wondering if a potentially useful upgrade path for this would be to include lateral load cells on the little stabilisers that hold the rocket. Finding that certain nozzle materials or fuel grain geometry (or whatever else) can lead to some slight lateral force could be really useful and may not be noticeable visually, particularly with the whole test stand firmly tied down.
Loving this series so far! If the blue tape becomes an inside joke for this channel, I am 100% down for it lol
Joe, building a reinforced box for electronics and hiding it behind a small concrete or bricks wall is the best way to protect those devices. Believe me it's very frustrating to see all that blown to pieces by a CATO. And BTW, try to put a protector (1/2" steel sheet) between the motor itself and the sensors. You'll thank me later! 😉
Yes, thank you very much for your videos! Been loving them all! Keep up the GREAT work!
Ay yo this stuff is way more interesting.
This channel deserves like 10x the notoriety that it has!
I love this project!! I CAN'T WAIT TO SEE IT SUCCEED!!!!!
Blue tape is a legitimate work holding strategy. Don't let anyone tell you different.
3:40 wow today we even got a lesson in future proofing!
Those load cell adapters are gorgeous
Big fan of your video series. If you need help with the power systems, I worked as a power electronics engineer for SpaceX and I'd be happy to review/help tweak your avionics system.
Outstanding. Just a comment to help bump this to the top.
I'm glad the fuel is grey not purple cos it looked like a giant crayon!
I for one am for making use of the blue tape for way more things 🤣 Amazing channel!
Thanks Joe