Super Capacitor Rocket
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- Опубліковано 18 кві 2019
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Sounds like the rocket yells "WEEEEEEEE!" every time you launch it.
one happy rocket. Be like the rocket. :)
I love the sound it makes. It's so cute!
Sounds like a long noooooo to me.🙂
The start sounds like R2D2
yea ı think the same thing lol
"The parachute worked most if the times, apart from obviously the last time"
I think that can be said about most parachutes in the end
as a former 82nd, member that has had a hard landing too. I thought the parachute should have been a little larger. It didn't slow down the fall very much.
Kinda like when you find something that you lost? It's ALWAYS in the last place you looked?
@@markthompson4885 I guess you would have liked a larger parachute too
@@markthompson4885 probably tested to be the best it can be considering weight?
Emphasis on “in the end”.
The rocket is actually silent. That sound is Tom saying “Wheeeeeeeeee!” Whenever he launches.
hahaha man nice
The pig in the Geico commercial 😎
The intro is basically Kerbal Space Program when you forget to Put your parachute to something else other than the first stage and you cause the rocket to crash
He didn't check the staging.
@@superposition2644 ya
Rookie mistake smh
Thank goodness my vital career mode mission didn't go as bad as his intro.
spot on. _100%_ correct dude
Am I the only one who finds the little 'Vvvvvwhoooooooo' noise it makes on take off adorable?
It's like the rocket is an excited puppy ready to finally fly.
More like a "WEEEEEEEEEEEEEE"
Hehe I was thinking
ua-cam.com/video/B6mh45mA_JY/v-deo.html
Wooooooooooooooo
Plaaaaasseeeeeeeee let me go 😂
More like a cartoon character i think
Someone needs to dub the sound of this rocket launching over famous nasa launches. That would be so hilarious.
veeeeeeeewwwwwwwwwwwwww
Woooooooooooooo!
🤣🤣🤣🤣🤣🤣
Saturn V go weeeee
noo don't give me stupid ideas xD
I know this project is 20 months old already (this is the first time I've seen it) but I just wanted to mention that the torque reaction from the spinning prop and motor seem to give the craft some yaw stability issues. I wonder if canting the fins slightly in the opposite direction wouldn't help counteract that effect, at least once it gets up to speed.
That was going to be my suggestion too. It's the easiest option. More lift would be generated too.
@@rcookro wha? pls explain...
Or put there 2 counterrotating EDFs instead of prop, would look like wingless A10 :)
Typically counter-rotating props are used for coaxial helicopters. Lots of kids toys are made that way.
Those first few flights really felt like 'model rocket launchpad explosions'. such fun!
That intro was totally a Kerbal Space Program launch. Messed up staging, summoned the rage of the kraken by having something spinning too fast, and just a short, disappointed “oh” at the self destruction. Now all you have to do is revert to vehicle assembly and you’ll be good to go.
Some printed Kerbals with little parachutes who deploy when the main chute does would be ideal.
As scott manley would say, Check Yo' Stagin :)
#rocketsurgery
lol. i'm just building a pod racer in my sandbox save.
in ksp if you find brute force isn't working you are clearly not using enough and should add boosters.
It is called unplaned rapid disassembly. And yea supercaps are super useful stuff.
The lift-off sound was adorable XD
Weeeeeeeeeee
Exactly!! It was so frickin cute!!!!!
Stolen comment
Wooooo
utetwo so nobody can have opinions??
The sound the rocket makes when it launches inexplicably fills me with joy.
Engineer type here, for your next upgrade use liquid electrical tape on the ESC wire connector pads, then use common electrical tape to waterproof your ESC, this will eliminate the chance of shorting your ESC if it gets wet from grass or condensation. Look into a counter rotating motor, it has TWO props that spin opposite of each other. When you scale this up (which who wouldn't!) you'll find that the torque generated by a single prop will start to rotate the rocket which is wasted energy after a certain amount of rotation (some rotation aids in stability, past that it's wasted). This was VERY entertaining! Thanks for making this and having the brains to give it a go!
engineer „type“?
0:00 when you forget to check your staging in ksp
Check yo stagin' !
ua-cam.com/video/WFZwI10HEsw/v-deo.html
Came here for this joke. You were faster...
Just wanted to write that ^^
That's what Elon calls a RUD event :D
Who else thought he was gonna make a rocket by overloading a 5 F capacitor until it exploded?
Me this is possibly due to the misleading thumbnail.
Me
@@suprememasteroftheuniverse dude, calm tf down. It also doesn't help that when you or I think of a rocket, we think of a litteral rocket
Me
Same. I once had one fail catastrophically because I'm a) bad at soldering and b) too dumb to disconnect the power while testing a circuit. Let me tell you, the innards go everywhere.
I like how happy that rocket sounds. Even when it exploded, like right before it happened, that's the happiest that things ever been man.
I love the slow motion sound of the disappointed "oh". 10:45 Thanks for not editing that out.
15:30 holding a possibly-bent propeller at eye level while revving the engine is a good way to lose an eye
usethefooorce that’s why he did the flawless “slowly ramp up then randomly throttle” test. Classic engineering, what could possible go wrong?
usethefooorce it’s like duct taping the chassis of your car to the cabin
Yeah that made me flinch, eyes are priceless.....
usethefooorce it’s not called an engine it’s called a brushless motor. So your incorrect there’s no reason for your unnecessary comment
@@robbieedwardsayers841 *So YOU'RE incorrect
OMG the rocket literally goes _"wheeeeeee!"_
More of a *who* oo *oooo*
Everyone is stealing ur commen5
Its more like a baby wolf when its full moon
lol dude best comment ever
I'm so glad i found this channel. I watch it every day. I love how you always find solution and how smart you explain how things work and why.
I just discovered your channel. You, sir, are one of the best explainers of things that I've ever encountered. I wish that there were more like you in the public schools. Well done.
Him: “The propeller looks a bit bent”
The propeller: >
When I Try To Copy It
The propeller broke
Bruh stfu
-
I love so much how it just sounds like the rocket calmly says 'WEEEEEEEEEEEEE' on take off!
Yeah.It almost sounds cartoonish.
I wonder how it says it's in space. I mean I've heard robots talk about it before. If it says 'SPAAAAAACE' before it realises its starting to fall, what would it sound like in the lower atmosphere?
Yeah, I was gonna say V2's launch was adorable :P
Chemicalvamp r/UnexpectedPortal2
I heard more of a "Whooooooooo!"
Очень приятно было смотреть на это. Напомнило о самодельных твердотопливных ракетных двигателях... Спасибо и удачи тебе!
10:31 ahh. Forgot my staging again
Every time it launches all I can hear is the motor going weeeeeeeeeee!
It sounds like it says noooooo or woooooo
It's kinda qute though
Sounds human!
it is happy but would be happier with a camera built into the rocket.
I thought it was Tom. LOL
i love how in the intro it goes "wooo" before rapidly dissembling itself
TBH I would have just thought of it as motor noise, as I fly RC all the time, but now I've read your comment I imagine the rocket shouting "wooooo" on every launch and it makes an already good video about 6x funnier. :D
Space Reptile it’s not an explosion. Just a rapid unscheduled disassembly
That's how i want to die just scream wooo and explode
ua-cam.com/video/wsiX0-EC-ZE/v-deo.html
Sounds like R2D2 freaking out lol
The French aerospace agency really has come a long way
"oh"
is definitely the best reaction to the rocket falling into as many pieces as possible xD
*spaceship challenger has exploded*
NASA flight control: "Oh" 😔
The electric motor sounds so happy: "Whooooooooo!!..."
The take off sound is great. Feeeeewwwww!
I was about to comment this, I love it! haha
yep, sound is so cute
Heard like ol' days Angry Birds
I was about comment the same😅.. it sounds like a cartoon going.."fweeeeeeeeeeee"
The rocket is liek "pppeeeeeeeeeeeeeeeeeeeeeeewwww" and it's gone! Brilliant, love it
Always innovative with your engineering modifications. Thrust in front, parachute in back, etc
This is so totally freaking cool. I love playing around with 2170 batteries but this is a whole new area.
16:23 Our local rocket club used to call that a lawn dart
You're a good man, Tom!
Really appreciate your enthusiasm and ingenuity.
I like the way it says "weeeeeeee!" on the way up. You controlled a rocket, and 2 cameras by yourself. Thug life! Great job!
I know right, so cute sound
Such a cute sound!
"WEEEEEEEEEEEEEEEeeeeeee....."
Like a happy kid going down a megaslide, lol!!
7:00 "reason for it being at the top is not for stability reasons it doesn't matter at what point on a rocket you have the thrust unit if you research the pendulum rocket fallacy"
Thanks for that! I never knew.
I love how the rocket sounds like its saying "WOOOOOooooooo......." as it flies up into space!
As an engineer, I fully appreciate that silly sounding uncontrollable giggle @3:50 due to a design working for the first time :)
WisdomVendor1 it’s a wonderful feeling and very uncontrollable. Awesome comment man!
As an eNgInEEr, fake pseudo losers
Well, SpaceX have to see this video !! A rocket that flies without combustion !! What an ecologic one !! But WAIT...Is there an athmosphere into space to make the propeller works ???
@@usern4m32 Just blow some air from a compressed air tank in front of the propeller, and vacuum isn't a problem no more!
@@michealbay1290 thank you for your productive contribution to the conversation
Tom: *charges rocket from 0 to 100% in 5 seconds*
Everyone with smartphones: *internal screeching*
@@brandonvdongen naaaah at least like 2 minutes
@@brandonvdongen capacitors
+ no charge memory problems
+ speedy charge/discharge (the best railguns are capacitor powered). Good voltage/amp density.
- abysmal power density. Both in volume and mass.
You can charge your phone in 5seconds if you put it in the microwave
@@bethelgues3918 only nickle cadmium batteries have charge memory
@@maxxiang8746 www.ncbi.nlm.nih.gov/pubmed/23584142
All known batteries have some form of memory effect that is with battery cycling (charging and depletion). Some batteries are better than others. For example Aluminum Oxide batteries tend to have really bad charge memory effects.
NiCd batteries are just more well known because of their extensive use and more pronounced memory effect. Lithium ion or NiMH have much longer life, but they eventually do experience voltage drops or a lowering of charge capacity.
On the flipside capacitors don't have any chemical reactions, and as a result they do not experience these loses or buildup of inert nonreactive salts... no matter how much they are charged/discharged.
5:41 I really like how you continue to show your content in the video while advertising your sponsor. GOOD JOB!
I had been wondering a lot if supercaps could replace / augment batteries for short term start-up current loads from intermittently run brushless motors and whether that would be an easy or prohibitively hard thing to do for a current project I'm working on. Thanks for showing me it's definitely a very strong option -- you've got a new subscriber! Love all your projects.
The intro made me laugh so hard
Rocket: *fails catastrophically*
Tom: oh
unscheduled rapid disassembly
he did not check his staging
@@Christian23242 r/beatmetoit
Tom’s videos are quite often quite proper British formal. I must say this less formal more human side of Tom is right fun to explore physics and maker/tinker shop time with.
Use contra-rotating props, so energy isn't lost to the rotation of the "rocket" body and for stability. Notice the twisting and resulting failure of the rocket during and shortly after takeoff in the first trial. Contra-rotating props would eliminate that problem and allow for maximum thrust without twisting/failure. (Edit: Autocorrect typo fixed)
not easy, especially since he's using a brushless outrunner
@@BrianSu should've used TWO smaller motors
Ironically, saw a book that had a similar rocket design from the 60s/70s (though using good old rubber bands as the propulsion) They solved the problem of requiring counter-rotation by having stationary blades of equal size to the moving blades underneath. It may also be useful to have a larger or multi-blade propeller so as to maximise the downward thrust efficiency
@@BrianSu there are pre-made brushless motors designed to operate contra-rotating props. I've used them a couple times on R/C projects.
hobbyking.com/en_us/cr23s-contra-rotating-bl-system-1700kv.html?countrycode=US&gclid=CjwKCAjw7_rlBRBaEiwAc23rhtrOe7NMguaarVRj07sUm8mbF2wNx1omOSuUbETj9vMMtfff9tht-BoCX_0QAvD_BwE&gclsrc=aw.ds
@@skrutinizr9372 Exactly. This is what I had in mind.
Your videos are the bomb! There is not one I have not totally enjoyed. Your skill set and knowledge are absolutely amazing. Keep up the great work.
It sounded so happy, when it took off. I loved it. Great work.
more like a long helicopter, still a fun little build.
maybe the whole body of the "rocket" should have been capacitors
Löng
Capacitors all the way down
Yessssss
Unfortunately super caps are a bit heavy, so I don't know how well that would have worked
Yessssaa
0:02 when you forget to organize your staging in ksp
Lol alsi when you activated a fairing accidentally when zooming in at a rocket in Spaceflight simulator and also destroying the rocket😂
@@superflypule4484 if you're playing spaceflight sim, you should try KSP,
StaticNebula26 yeah, althought space flight sim is mostly free and KSP isnt.
Oh and KSP isnt on mobile
@@awhahoo well you get what you pay for.
@@StaticNebula26 Yep *laughs in bad*
Brilliant! Excellent engineering. The best part is how fast you can recharge and launch again. Nice job.
That is what I call a happy rocket. Take care of the kid Tom 😂
I see an ICBM here !
Inter-Courtyard Ballistic Missile.........
Lol :D
IBBM
Inter Backyard Ballistic Missle
@@thelastdaygamer8702 get me the missile command, order a strike to the granny next door, she makes bad apple pies
ITBM
Inter-Table Ballistic Missile
@@Eric-dh5pf Call in a strike when her dog strays from her yard to do his business.
I wonder of it's against the law to use your drone to chase domestic animals off your property?
@@colfaxschuyler3675 I am not sure
but you can load the dog's stuff to your ICBM, and it becomes a bio-hazzard warhead weapon
Next Project: Super Capacitor eBike!
Yes, it might get complex but it is what Tom generally would like to get involved in. I really wish Tom at least discuss the challenges involved in this project.
This could actually be a great idea. If he fits the bike with a dynamo that can charge the super capacitors.
Could have a turbo button on the bike that uses the capacitors....
Judging from how noticably harder you need to pedal for just a single light i think regenerative breaking isn't really going to work.
A turbo button on the other hand would be a good idea, this way you could get away with a smaller battery if you just want to use it occasionally. With recharging time fore the caps it would probably be a lot like the nitro button from need for speed.
The energy per unit volume of a supercap is not good enough for a bike that is much use. You want more than 10 seconds of run time.
Been watching your videos for a few days now, this got an instant thumbs up and sub in the first 5 seconds. The sudden dismantling and resulting "Oh" ... Yup, you are my kind of person! Also love the content, might not understand everything, but I'm learning a lot from what I can
When I was teaching EE, one of my first demonstrations was blowing up a capacitor by reverse voltage application. Students loved it and I had their attention.
Sounds like a rocket with happy astronauts on board.. They're like WEEEEEE! The sound of it taking off.
Or happy watheads!
one word: Kerbals
Johannes midgets
Years ago I heard someone say that a 1F capacitor was impossible or largely impractical ... time changes way too fast :-)
I mean i guess before super caps that does not sound like an insane statement but for car audio they definitely had up to 5F capacitors probably bigger for a while and also i mean i heard of super capacitors like 5 years ago or so
James Holbrook They exist since 60s, just were too expensive back then. Also they were vastly improved over time, first supercaps were really big. Like 12v 6F was about the size of a hockey puck. Now it's about the size of 2 2032 cells.
Alexandre Salau There are super Capacitor one the market with few thousand Farads. I found also a better 3V Capacitor with approximately same size like he used in this Video: m.reichelt.com/ch/en/supercapacitor-100f-3v-22x45mm-hy-cap-100f-3v-p195670.html?&trstct=pos_10&nbc=1
It is not too fast. Before supercapacitor 1F was really big size. But it is already 50-100 years so. So it is normal that they find something new after 100 year of research.
I remember playing with 1 Farad 14.4volt caps in the mid '90's when I got into car stereo's and Subs. 1st rig 1200W 4x50w and 1KW Sub's. used to use a light bulb to charge that massive cap after lots of scary moments.
Your joy is more infectious than a new strain of CoronaLurgey. From one engineer to another, thank you for sharing your knowledge and work and a special thank you for inspiring others to get out there and explore other technologies.
When i was a kid, i used some capacitors with small broken bulb to ignite powder in petard. That was mounted on rocket models, and i started them horizontal into walls. That was quite fun. Like a rockets on military planes/heli. They ditonated when smashed into the walls
When charging high power capacitors, especially with a lithium battery pack, I would highly recommend using an appropriately sized current limiting resistor. The initial peak current will be incredibly high as you're essentially shorting the battery. That's not good for the battery, and not good for whatever switch or plug you are using.
Well, he said he didn't recommend it.
12:34 the OFFICIAL wOOooooooo replay button
Thank you
OHMYGODTHANKYOUSOOOOOMUCH!!!!!!!!!!
Thank you sir
fall guys
Very impressive! Can I suggest a second counter rotating propeller? It would significantly improve the efficiency of the vehicle and I suspect you could get much higher.
I just love the sound when it takes off, i think its hilarious
*builds supercapacitor-powered missiles to kill tanks in an eco-friendly way*
*kill people
@Ben Silva congratulations, you managed to make that political.
it won't be as fast as a chemical rocket but i bet it has lower thermal signature
@@sepg5084 it doesnt get hot when fully discharged?
ShakamuraGames won’t help them shoot it down, so it doesn’t matter
You know what this successful test means? It means that you now have to scale it up. By a LOT! 😀
Hundreds of capacitors...
Now, here to find a 10000f capacitor.... or 6 of them
And now it explodes
Seriously though, great video. Super caps are amazing and I'm going to try to involve them in my next experiments!
I think a contra-rotating prop setup would be amazing for a project like this. Get rid of most of that torque twist.
Still a super fun project though. Definitely going to have to make one eventually
When Elon Musk eventually get to Mars Tom Stanton already have established a colony
lol
@@kryptenwolf3564 you seriously should just keep quiet you have no clue what you are talking about usually people of lower intelligence cant understand... you do realize Elons many accomplishments ? Solar city ... Tesla.. SpaceX in the past decade since they opened their doors they have been leaps and bounds far beyond what nasa even thought possible
William Bianco r/woosh
@@sheercuriosity531 everything is a woosh to kids these days 😳
and everybody there will be wearing propeller hats
I love the WEEEEE when it launches
I wish you wouldve talked a little more about how current and voltage interact with eachother while a capacitor is discharging. Great vid!
I love that it makes a "weeeeee" noise
Use a folding propeller like RC gliders have so it closes naturally before impact.
"You can...."
It might close "before impact" or if falling too slowly just close on impact...
WHY would a glider have a propellor?
@@koitorob Motorized gliders have propellers.
@@koitorob
That's like asking "Why would a bicycle have an electric motor?" …. because it's better that way. :)
"Weeeeeeee!" - oh boy, I love this sound lol
😂
hahaha man nice!
i just want to say that rocket hits different and the most fastest turn around time should be given to this rocket lol
you can get more out of the caps by putting them in parrallel and useing a switching boost up converter. Putting caps in series devides the total capacitance.
I'd like to see this with counter rotating props, Well done Tom.
“Oh.”
Then...
WEEEEEEEEEEeeeeeeeeeeeeee. I think this is better than the standard model rockets, at least for smaller areas.
i can't believe that thing left the ground! what a hilarious noise it makes, it sounds like you have a tiny dog howling just off-camera
I would legit buy one of these
So cool
The parachute and everything
Its amazing
Now make this and sell it as a toy before other companies do!
So many companies have done less and made millions then went to research more toys. Airhogs, cool company.
It would be built to a price and break after two flights. Better to make your own, apparently. This thing is amazing.
being able to control how high and when to deploy is a huge change in entry-level "rocketry"
Just wondering if you need a CAA certificate? Kites over 60m do.
www.caa.co.uk/General-aviation/Displays,-events-and-activities/Kites/
Kinda defeats the object if they won’t grant you.
@Dennis Woycheshen Spare parts is a very lucrative business :)
North korea testing ICBM technology (2019, colorized)
Ted Backs LMFAO..
I love the sound it makes. It's so cute.
Gr8! Astonishing, I'd never thought it would go that high!
I’d like to see the rocket unfold a pair of wings and turn into a glider at the apex for a smoooooth landing.
Can be done with a gravity assisted system, a large ball bearing that when rolled and rocket is pointed down, it release two wings held in place at bottom of rocket by ball bearing and when it moves forward slides past the sprig trigger holding wings in
Meh
Yo get the idea
I just got to 9 mins in on video, so replace ball bearing and spring mech with gyro switch that releases folded wings to glide but then you got to design a glider type body with lift and aerodynamics or its just a stick with wings
Peace and Blessings
Morgenstund like a space shuttle
has been done. search for flitetest free flight. They used a real rocket tho
So this is actually a drone; you fooled me. I though you’re going to explode the capacitor or something like that.
Yeah like ElectroBOOM's capacitor mini rockets he made. I dunno which video it was, the rockets were probably 3D printed.
Absolutely brilliant! Thanks for sharing this amazing concept. The drone filming was a fantastic touch. I think Elon Musk needs more guys like you...
1:46 "okay it's a bit of a dodgy connection just holding the wires like this but"
- Gosh, if only someone could invent a better way.
To limit damage to the prop, maybe look into a folding prop, like the ones used on rc motor gliders?
He just needs good ol’ tri-blade race props. Smack into a tree at 80mph, slightly bend back one of your prop blades, and go hammering it through the trees again on your race mini quads! The old props seemed to be more brittle than icicles and would break on almost anything even 5 mph epic slow airplane crashes or slight bumps. Modern props use better materials with plastics that are more rigid (holding aerodynamic shape and efficiency at high power), as well as taking a beating and allowing more than hairline flexing. Plus they seem to bend back about 20 times, whereas the old ones had a fatigue limit of seemingly 1 crash, and maybe it would be sorta flyable at low throttle and vibrating, or maybe the props would explode...
It’s a good thing we have modern props, because I crash a lot! So much better than the old ones.... they do need to become more available in the 9-12 inch size though, those all seem to be old school materials (besides carbon, but those just aren’t as cheap to crash like I do)
@@jakegarrett8109 Maybe a bigger parachute would be enough to save the props.
Or attach parachute above center of gravity instead below (while still storing it in the base)
Or the prop saver with an o-ring to hold it on
Keep the deployment chamber in the bottom but have the parachute attached to the top.
Could market this as a toy, I think it could sell well!
If not handle correctly it can kill :) so i rather not make this a toy
krypten wolf no they are electric now
@@kryptenwolf3564 I think he's referring to the rapid discharge of the super capacitors
i would definitely buy this instead of using expensive rocket motors
@@neilmedina997 any toy can kill if you try hard enough so what's your point
The rocket is definitely saying "sheeeesh" when launching
If you ever visit this project later, move the caps lower in the rocket. This will improve stability. Also, seems that it could benefit for additional caps, since the power/weight ratio seems favorable. Enjoyable to watch, and your enthusiasm is infections.
Yknow, you could use a solenoid to automatically fire the parachute below a certain voltage
Smart
No. He knew that there were going to be plenty of situations where he wanted to deploy when he hadn't expended most of the capacitor's power. A manual deployment gave him the ability to abort the flight when *he* wanted.
@@jlstanley He could do both. (have a manual switch and a solenoid that automatically activates below a certain voltage)
But as you can see in the video the rocket turns sideways, and there's a good chance it would be back on the ground long before the parachute fires
What if...?? Two counter rotating props and multiple-stage booster capacitors that drop-off as they discharge their energy. Could go really high with a small payload of say, a plastic space man.
payload of a toy tesla car :D
I thought the same!! But then I also realised that rockets are ment to spin for better stability..
sadly, you have to reach a bit more than 23.000 Km/h in an environment with no air, to reach orbit...
The sound just after 12:33 is the most beautiful, delightful rocket sound ever.
People in 1950s: In 2020 we will have flying cars
People in 2020: "Oh my gosh, that super capacitor sounds so adorable!!!"
As a Dutch viewer, I have to say I like your Red - White - Blue colors, especially because you added an orange parachute.
That said, I do like the project even more. What a great way of using supercapacitors. I have a project going on with a printed torpedo that begs for this solution. Thanks for bringing me to this idea.
what... a white nationalist ? OBEY to the EU slave.. and orange points to our royals.. our german royals.. whom sold oil to the germans in ww2.. you must be new here on earth..
@@cyberhawk80 woah
@@cyberhawk80 what
@@cyberhawk80 wut
G E K O L O N I S E E R D
"The parachute deployment worked... most of the time... apart from that last time."
Yeah, that's kinda how that works, isn't it?
The atomic reactor didn't explode most of the time, except for the last time.
I'm a genius
lmao pro comment
Nice one again Tom! And I do admire your obvious enthusiasm!
its almost like you need a hinge structure for the parachute to balance the whole thing horizontally on the flight down to protect the propeller/motor a bit better.
I'm impressed! Looked like a heavy build, but still took off like a, eh, rocket.
Unlike batteries, capacitors take on whatever voltage is applied to them (or explode), and loads of energy (especially these super caps), so can be lethal. Viewers should be warned!
2:39 that transition was SMOOTH
I would like to suggest you print a centrifugal propeller that lays back until spun up. That would keep you from tearing up propellers. The props would have to swivel upwards and stop at the normal position for a prop, but once the motor is no longer spinning the props could fold back when they hit the ground. Just a suggestion.
The sound it makes is just awesome!