Do you guys have any good suggestions for what we could do with these new wheel designs? With the grooves/spoons I think they'd have enough torque to actually be useful for something, maybe an electrical generator or turbo fan? Any engineers out there have technical suggestions on how to do it? Thanks as always for watching!
I was going to suggest slapping some magnets and coils on there and making the worlds most inefficient hydro generator. Don't restrict the voltage and blow some stuff up! Capacitors pop gud.
Omg I am DYING at his fake "microphone" wavy thing. I dunno what this trend the last couple years is of RUclipsrs insisting on holding their mics in hand on camera, but dude clearly noticed the same thing and mocked it beautifully while having the most room-echo audio possible the whole time. I refuse to believe any of this was unintentional. True genius.
@PyroPerchlorate yeah, but he also commented on the “having the most room-echo audio possible”. I interjected and informed him that it’s not echo, it’s reverb. They’re two different things.
19:45 I have absolutely zero formal STEM qualifications, but I think that unit of wheel is working against itself aerodynamically. The wind resistance of all those spoons are causing major drag, limiting RPM / terminal velocity. Plus, the wheel as a whole looks bulky & heavy. Put that wheel on a diet and streamline the spoons a bit and you could probably double the RPMs. Great video!
My same though, air drag.... Flat surfaces are bad, round ones are better and sharp angled ones are the best. The next thing to touch on is to maximize the force of the water jet pushing the wheel by shaping a deep spoon like scoop with an edge in the middle that splits the jet in half like this 🫷🙏🫸
Not classical air drag. Think more at sonic sound barrier. And lets consider a housing too, since we are at about sonic speed at the circumference. So we don’t have normal drag anymore, it gets into wavelike behaviour somewhere at c and the corresponding pressure gradient around it. So use a proper shaped housing. It would be also much safer. Oh, by the way. Are you sure, you have all legal disclaimers accordingly in place for all possible hazards under all possible circumstances and conditions? If not, please consider to update your content to avoid legal action being taken from against you.
The maximum possible speed of the wheel is governed by the speed of the jet ... It will never reach the jet speed (at the point of contact at least) but it will get relatively close. Better design can bring it closer. (Most turbines are designed to extract power, not to reach top speed... max power is extracted when the wheel is moving at exactly half the jet speed at the point of contact with the jet). To increase angular speed, the best remedy would be to direct the jet close to the axle. A large wheel, or at least, a wheel being struck by the jet a long way from the centre, will have a lower RPM, since the jet has a set speed, and the RPM is proportional to jet speed DIVIDED by radius.
Safety professional here! Earplugs are cheap and actually beat most earmuffs in noise reduction rating. (NRR). The only issue is that they are kind of a pain to put in - you have to roll them to shape, then pull on your ear as you put them in. If it sounds like you are underwater, they are inserted correctly. RUclips has videos on this. I personally like to use both earplugs and ear muffs together when I go to the range. That adds 7 dB of NRR to whichever NRR is higher - if if you have 30 NRR earplugs and 25 NRR muffs, it will give you about 37 dB noise reduction, not 55 dB. Fun fact: if you have an iPhone, you can get NIOSH sound level meter app in the app store for free. It turns your phone into an OSHA-approved decibel meter Keep up the awesome work!
I was worried at the start of the video but then the S.H.A.R.T. was shown off and I was like "Aye, they got this!". Really glad that safety is/was taken seriously here.
1:13 the waterjet shows the slight weakspot that splits later at this point. You can see just a slight crack to the left of where the jet starts its hole.
You should wear ear plugs with muff type hearing protection over them when dealing with extremely loud noise. It's what artillerymen do, and it keeps them from going completely deaf. I like disposable foam ear plugs. You can wash them with dish soap and reuse them when they're dry, or just toss them in the trash. 25 pairs of E-A-R TaperFit 2 Foam Ear Plugs are $15, and have a 32 NRR. If you put a pair of muffs on over them, maybe you'll get over a 50 decibel reduction in the volume of noise instead of around 25.
I dont even wash em lol Also I found if you just wet the tip of em after rolling them up, they slide into your ear without any fuss and you don't feel any of the wetness.
@MisterWillie060 I used to get them free at work and got a new pair every day. If I dropped one, I grabbed another pair. But, washing is an option if you're running out. I roll them up really tight, poke them in my ear, and hold my finger over my ear so they stay there when the expand. Lately I've been wearing a pair of amplified stereo Walkers electronic muffs with Bluetooth capability while shooting. They only have a noise reduction rating of 23 dB, but that's good enough for what I'm doing. If you combine that with a pair of 32 NRR ear plugs, I believe it adds up to 55 dB of sound reduction.
@johnjingleheimersmith I know that how it works as far as the volume of sound is concerned, but don't know how it works for hearing protection. All I know for sure is that 23 + 32 = more than 32. I don't know HOW MUCH more, but it's more. Also, safety glasses can interfere with some muffs and make them less effective. So when you're trying to protect your eyes and ears, you need muffs that seal well over the bows of glasses.
There's something so honest yet hilarious about the fact that this is the only "science" channel on RUclips that ends their videos with, 'we don't know how that happened, you guys figure it out' 🤣
At first I thought "Why not safe haven against rogue projectiles so it would be S.H.A.R.P. ?" and then I realized what the acronym was for Safe Haven Against Rouge Trajectories 😂😂😂
At 10:50 when you're facing off make sure your tool is centered to stop the little pillar that forms in the middle, really easy to do if you press a long thin peice of metal (I usually use a small steel rule) between the tool and a round stock, and look straight towards it and adjust tool height until the rule is completely vertical.
"What if a fidget spinner could kill you and your whole family?" is the kind of scientific question you will only find people answering, or in fact asking, on youtube.
The custom machined one isn't exactly a Penton wheel. The Penton wheel splits the jet and redirects it . And backside of the spoon was flat; i'm sure at those speeds air resistance is a factor, so a dome would be more favorable for speed.
Engineering tips: 1. For earpro, use foam inserts below your regular earmuffs. Roll them before you insert them so they expand in your ears and seal well. It makes a huge difference. 2. For your turbine: you are building a single-stage impulse turbine. Ideally, the water enters the turbine moving VERY FAST (relative to the ground) and exits extremely slowly (relative to the ground). For example, if you are using a pelton paddlewheel, the blades "flip" the water around and send it back from where it came from at (roughly) the same speed. Imagine water at 100ft/s hitting a spinning blade, where the blade is moving 50 ft/s. From the blades perspective, the water is coming in at 50ft/s, and leaves at 50ft/s. From the ground perspective, it enters at 100 ft/s, and leaves at 0 ft/s - so all of its energy is transferred to the turbine. You can work out the velocity of your waterjet from the pressure. Very roughly, dynamic pressure = 1/2 * rho (density) * v^2. 10000 psi gets you 1220 ft/s, 40000 psi 2440, etc. The turbine wheel tip speed should be ~half that of the water velocity. So at 10ksi, your turbine will get up to like 600 ft/s at the tips, with a radius of 6in your velocity is 1200 rad/s or 11111 rpm. You can either increase the pressure, or use a smaller turbine wheel. Note that the centrifugal (exploding) force is v²/r, so smaller wheel -> more acceleration -> wants to explode more.
1:13 I know making and doing stuff is hard, but I'm honestly blown away at the simple, easy to avoid stuff that goes wrong in your videos. Like the instant the water jet turns on here, it very obviously splits the wood along the grain, so the part is pre-broken before the actual test begins. Great job lol 👍
You should probably only spin the wheels clockwise. That last one was so close to falling off and spinning it clockwise would keep the nut from rattling loose.
(Aerospace Engineer here) I wouldn't be surprised that at those speeds you're getting significant aerodynamic drag which is equalling the force exerted by the waterjet, especially with the large flat spoons - You can do a rough back of napkin calc by doing 0.5*rho*v^2*Cd*A, where V is the wheels tangential velocity, at the spoons, Cd would be the coefficient of drag for a flat plate (ish) and A is the total area of all your spoons. Okay I've now said spoons too many times, hope this helps !
![Hit The Road - Baby Crash f/ G Herbo & NoHookChe | From The Block [PLAYGROUND] Performance 🎙](http://i.ytimg.com/vi/qt-jbqlr92E/mqdefault.jpg)
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![Gucci Mane - Crash Dummy [Official Audio]](http://i.ytimg.com/vi/m65MJSC1Jto/mqdefault.jpg)
Do you guys have any good suggestions for what we could do with these new wheel designs? With the grooves/spoons I think they'd have enough torque to actually be useful for something, maybe an electrical generator or turbo fan? Any engineers out there have technical suggestions on how to do it? Thanks as always for watching!
ice ceam
As a musical engeneer I'd say you should make a wheel with sound..... good luck
smaller diameter, maybe the air resistance is also limiting the speed? so u could make the back of the spoons a bit more aerodynamic.
Aerodynamic wheels? Although rounding off the back could make them too weak to withstand the jet for long.
I was going to suggest slapping some magnets and coils on there and making the worlds most inefficient hydro generator. Don't restrict the voltage and blow some stuff up! Capacitors pop gud.
The lion doesn’t concern itself with molten aluminum pouring onto the floor.
This guy gets it
so out of context i love
The lion doesnt concern itself with the molten aluminum burning through the table.
Hahahaha
@korneliusfrik9545good one
Omg I am DYING at his fake "microphone" wavy thing. I dunno what this trend the last couple years is of RUclipsrs insisting on holding their mics in hand on camera, but dude clearly noticed the same thing and mocked it beautifully while having the most room-echo audio possible the whole time. I refuse to believe any of this was unintentional. True genius.
It’s called reverb jus so ya know 😊
Not room echo I mean
@BattleCorgiTVI rethink he is talking about the toilet brush
@BattleCorgiTV I think you missed both points.
@PyroPerchlorate yeah, but he also commented on the “having the most room-echo audio possible”. I interjected and informed him that it’s not echo, it’s reverb. They’re two different things.
@chrisbleurgh7425 how do you figure that lmao some of you internet people are so weird
The cylinder MUST remain unharmed
IT IS IMPERATIVE
if we cant take the cylinder to the emergency room, we're taking it to the CNC shop.
Iykyk
What if it's stuck in a mini M&M tube?
Please dont remind me
To be fair, that laminated wood "easy" wheel is a bit of a testament to composite materials. That was impressive as hell.
Hahahah, "I was really worried about an issue, which i took NO precautions to avoid" I love this guy.
a strategy i use far too often in life but has also worked often enough to keep using
@LiarJudas666 saves lots of time except when it doesn't
@WaterjetChannel which i imagine is a fairly large amount of the time
3:10 BRO, not even "I did a thing" has reached this level of unsafety
But nile green has , in less of the physical sense , but the quemical
He should at least get a safety tree like spyro
bro reinvented plywood
19:45 I have absolutely zero formal STEM qualifications, but I think that unit of wheel is working against itself aerodynamically. The wind resistance of all those spoons are causing major drag, limiting RPM / terminal velocity. Plus, the wheel as a whole looks bulky & heavy. Put that wheel on a diet and streamline the spoons a bit and you could probably double the RPMs. Great video!
My same though, air drag.... Flat surfaces are bad, round ones are better and sharp angled ones are the best. The next thing to touch on is to maximize the force of the water jet pushing the wheel by shaping a deep spoon like scoop with an edge in the middle that splits the jet in half like this 🫷🙏🫸
Not classical air drag. Think more at sonic sound barrier. And lets consider a housing too, since we are at about sonic speed at the circumference. So we don’t have normal drag anymore, it gets into wavelike behaviour somewhere at c and the corresponding pressure gradient around it. So use a proper shaped housing. It would be also much safer. Oh, by the way. Are you sure, you have all legal disclaimers accordingly in place for all possible hazards under all possible circumstances and conditions? If not, please consider to update your content to avoid legal action being taken from against you.
The maximum possible speed of the wheel is governed by the speed of the jet ... It will never reach the jet speed (at the point of contact at least) but it will get relatively close. Better design can bring it closer. (Most turbines are designed to extract power, not to reach top speed... max power is extracted when the wheel is moving at exactly half the jet speed at the point of contact with the jet).
To increase angular speed, the best remedy would be to direct the jet close to the axle. A large wheel, or at least, a wheel being struck by the jet a long way from the centre, will have a lower RPM, since the jet has a set speed, and the RPM is proportional to jet speed DIVIDED by radius.
@labibbidabibbadum Can you explain why max power is at half the speed of the jet?
@alienturtle1946maybe because the jet is only applying max power to the wheel at regular intervals rather than constantly ? Not sure though
Wow this video was truly great, just finished watching at 200x speed and boy were those some fast objects
bro has the RUclips Super Premium 200x feature
@WaterjetChannelwait does that really exist ?
@WaterjetChanneladvertisers love me
@v-333 Yes, you can pay to basically skip the video while still giving it a view. It's revolutionary technology.
8x with no ads for free is good enough for me.
Eco frendly wood veneers 2:56 now all we need is some expansion screws and square galvonised steel
Caught that reference sooo fast
i barrowed the galvanized square steel from my aunt is that ok?
yeah can you plz ask your aunt to let us borrow some?
I saved a million dollars to go to New York just for a 0.5 meter apartment 2:59
13:23 “…the cylinder will remain undamaged.” 😂
iunderstoodthatreference.gif
The memeage of this channel is truly something else lol.
while literally getting blasted
This reference caught me so offguard lol, had to see if someone else heard it. Glad im not alone
u/smart_calendar1874
Safety professional here! Earplugs are cheap and actually beat most earmuffs in noise reduction rating. (NRR). The only issue is that they are kind of a pain to put in - you have to roll them to shape, then pull on your ear as you put them in. If it sounds like you are underwater, they are inserted correctly. RUclips has videos on this. I personally like to use both earplugs and ear muffs together when I go to the range. That adds 7 dB of NRR to whichever NRR is higher - if if you have 30 NRR earplugs and 25 NRR muffs, it will give you about 37 dB noise reduction, not 55 dB.
Fun fact: if you have an iPhone, you can get NIOSH sound level meter app in the app store for free. It turns your phone into an OSHA-approved decibel meter
Keep up the awesome work!
25 is a nice even number
Easily divisible by 2.5
@-Jethro- which is, in fact, another nice even number.
I am upset at how odd that felt to me.
I was looking for this exact comment lmao
It 1/4 of 100 or 1/2 of 50 what are all even numbers so it must also be even :)
16:53
> missing most of the teeth
> "stayed intact"
You definitely should not make a massive aluminium beyblade coated in tungsten.
How would you coat aluminum in tungsten? Like a shell bolted on?
1:50 love that acronym LOL
Fr
"Shart"
Use ear plugs and ear muffs at the same time
Correct.
That would wobble a lot.
11:33 not the casual throwing of the handle 😅
Bro it was so goofy I thought it broke but realized it was only held in not screwed
I was literally about to post about that😂
"25 is a nice even number." Perfectly matches my sense of humor! 😂
I was worried at the start of the video but then the S.H.A.R.T. was shown off and I was like "Aye, they got this!". Really glad that safety is/was taken seriously here.
5:03 W rage bait bro.
1:24 this sudden change in audio scared me ngl
1:13 the waterjet shows the slight weakspot that splits later at this point. You can see just a slight crack to the left of where the jet starts its hole.
Yeah i noticed that in editing. I was going to point it out but decided not to lol
Ah, yeah it was bound to explode whether it was weakened or not at those speeds. It made for a nice split anyway. Keep up the great work!
I dont see it.
@prestonthegod1 try opening your eyes
I laughed so hard when I saw the clip of you dropping a full crucible of molten metal because I have done that exact same thing
With shorts and tennis shoes on? 😮
You just have to repress the urge to reach out and catch it (with your hands).
90% making stuff. 10% spinning stuff.
100% reason to remember the name
The journey's the best part of getting to the destination
As god intended
2:11 one piece mentioned
ITS REAL!
3:51 Sick Firebird!
I like this pure chaos, it makes me feel all warm and fuzzy about my own disasters.
First time dropping a comment. I love that you address safety! The SHART box!! I laughed my ass off!
Did brown liquid come out?
Does it often miss with sacred flame?
You should wear ear plugs with muff type hearing protection over them when dealing with extremely loud noise. It's what artillerymen do, and it keeps them from going completely deaf. I like disposable foam ear plugs. You can wash them with dish soap and reuse them when they're dry, or just toss them in the trash. 25 pairs of E-A-R TaperFit 2 Foam Ear Plugs are $15, and have a 32 NRR. If you put a pair of muffs on over them, maybe you'll get over a 50 decibel reduction in the volume of noise instead of around 25.
I dont even wash em lol
Also I found if you just wet the tip of em after rolling them up, they slide into your ear without any fuss and you don't feel any of the wetness.
@MisterWillie060 I used to get them free at work and got a new pair every day. If I dropped one, I grabbed another pair. But, washing is an option if you're running out. I roll them up really tight, poke them in my ear, and hold my finger over my ear so they stay there when the expand. Lately I've been wearing a pair of amplified stereo Walkers electronic muffs with Bluetooth capability while shooting. They only have a noise reduction rating of 23 dB, but that's good enough for what I'm doing. If you combine that with a pair of 32 NRR ear plugs, I believe it adds up to 55 dB of sound reduction.
@BigHarryBalzac Decibels are logarithmic scale. You can't just add them together like 1+1 = 2. It's more like 1 + 1 = 4
@johnjingleheimersmith I know that how it works as far as the volume of sound is concerned, but don't know how it works for hearing protection. All I know for sure is that 23 + 32 = more than 32. I don't know HOW MUCH more, but it's more. Also, safety glasses can interfere with some muffs and make them less effective. So when you're trying to protect your eyes and ears, you need muffs that seal well over the bows of glasses.
A guy named mister Willie telling me to put something wet in my ear…. This sounds a little too familiar
5:26 The fall killed me.
Nothing says safety more than a S.H.A.R.T. Shed.
There's something so honest yet hilarious about the fact that this is the only "science" channel on RUclips that ends their videos with, 'we don't know how that happened, you guys figure it out' 🤣
10:35 Every. Damn. Time.
Wdym
@prestonthegod1The joke always gets me.
this is the exact amount of chaos my brain needs
"Safe Haven Against Rogue Trajectory!" I haven't laughed so hard in a while!
shart
15:47 I am so glad you sampled that audio. It never gets old hahaha
The Wilhelm scream would be a good fit too.
15:52 such a niche goated reference
Wind resistance and aerodynamics are your new enemy.
The same shape you're using to "scoop" the water on one side, is "scooping" the air on the other.
The cylinder not being damaged was some crazy ball knowledge
Look up hydro generator pelton wheels
They are designed to take water and turn it into rotational energy
eco-friendly wood veneer... that's a great reference
God didn't intend for anything to accelerate this fast...
Realizing now that my favorite RUclips genre is just "unhinged scientists"
the script this time was 10/10
< THEY'RE EVERYWHERE!! @;W;
video title: “spinning ‘metal’ objects dangerously fast” first thing he says: “this massive ‘wooden’ death wheel just exploded” 🤓
2:12 - the One Piece confirmed
The one piece is real!!!
It's dropped somewhere in suruga Bay
man i lov how much effort had been put in this vidoe jsut to bad in already subscribed so i cant sub again ❤😢❤😢❤😢❤😢❤😢😂😢
9:15 epoxy is actually just always a nightmare, if the trash bags didnt leak then its a great method.
The wook had a check crack already 😂
7:00 that was NOT the wind
What in brainrot are you saying (;´༎ຶ༎ຶ`)
@EOWS_812OFICCIALthe final shape DLC is NOT brainrot, if anything, it's one of the best video game DLC'S post HALO infinite
Pov me when I use both light and dark for the funnies
7:00 no you didn't
Running with scissors is the SAFEST thing you did...LOVE IT!!!🤣🤣🤣
3:12 Bare legged????
At least no Flipflops.
3:13 that scooby doo ah kicking and muffled “eeeuuuugghhhh” had me on the flooooor
Jeremy Clarkson 7:27
3:12 best part of the whole video.
I havent seen this channel in like 7 years. Im glad theyre still making videos with a much higher production value.
production value is up, but sometimes i miss the old low effort, recorded on iphone, ahhh imma just water jet this random thing i found out back.
The channel has gone downhill significantly since the original two left.
At first I thought "Why not safe haven against rogue projectiles so it would be S.H.A.R.P. ?" and then I realized what the acronym was for Safe Haven Against Rouge Trajectories 😂😂😂
bro when he put the orange MJ hat on, he became the third mario brother
Looked like Waluigi 🤣
Don’t make me pull out the purple shirt
The CNC machine really makes things easy. Except when you are bad at CNC and have to redrill and file everything to fit.
18:36 figet spinner of death
*Fidget
@ThatOneClikrthanks
@d@daniellewis762 Don’t worry abt it
Hey 30 years later and still scared of cutting my hand off with 1 of those lolol bahaha😂
Bet them balanced by an engineer with the right equipment.
Oops not Bet. Get.
I think I will resubscribed since Daniel Adair is getting the recognition he deserves, rather than the rest of the crew on the Waterjet channel.
🥰
16:00 max verstappen max max max super max max max
Callemerstappen
What a fall from grace... Like a high school power point presentation.
Clickbait much? I'm not fucking sorry. NOT ONCE in this video do you even say the words "mach 3." Change the thumbnail.
google how fast a waterjet stream is lol
@WaterjetChannelye lol
Your a d1 crash out agent
Is this supposed to be ragebait?
The pin of shame.
That's how I live my life " I took no precautions to prevent that... " 🤣
You went counter clockwise. A few more seconds and it was coming off 😂
At 10:50 when you're facing off make sure your tool is centered to stop the little pillar that forms in the middle, really easy to do if you press a long thin peice of metal (I usually use a small steel rule) between the tool and a round stock, and look straight towards it and adjust tool height until the rule is completely vertical.
Dangerous said two times cancels out right? This is totally safe right 😂😂😂
Now this is what I'm talking about science =)
"I don't trust like that!" 😂
11:34 my heart actually stopped beating for a few seconds
"What if a fidget spinner could kill you and your whole family?" is the kind of scientific question you will only find people answering, or in fact asking, on youtube.
1:50
Safe
Haven
Against
Rogue
Trajectory
Other known as S.H.A.R.T for short.
A thing that you'll most likely do it something breaks though
Okay, that was absolutely fucking wild!
The custom machined one isn't exactly a Penton wheel. The Penton wheel splits the jet and redirects it . And backside of the spoon was flat; i'm sure at those speeds air resistance is a factor, so a dome would be more favorable for speed.
Awesome. Totally Awesome.
ha ha you came so close to that nut unscrewing itself on the spoon setup. terrifying, thanks.
Engineering tips:
1. For earpro, use foam inserts below your regular earmuffs. Roll them before you insert them so they expand in your ears and seal well. It makes a huge difference.
2. For your turbine: you are building a single-stage impulse turbine. Ideally, the water enters the turbine moving VERY FAST (relative to the ground) and exits extremely slowly (relative to the ground). For example, if you are using a pelton paddlewheel, the blades "flip" the water around and send it back from where it came from at (roughly) the same speed.
Imagine water at 100ft/s hitting a spinning blade, where the blade is moving 50 ft/s. From the blades perspective, the water is coming in at 50ft/s, and leaves at 50ft/s. From the ground perspective, it enters at 100 ft/s, and leaves at 0 ft/s - so all of its energy is transferred to the turbine.
You can work out the velocity of your waterjet from the pressure. Very roughly, dynamic pressure = 1/2 * rho (density) * v^2. 10000 psi gets you 1220 ft/s, 40000 psi 2440, etc.
The turbine wheel tip speed should be ~half that of the water velocity.
So at 10ksi, your turbine will get up to like 600 ft/s at the tips, with a radius of 6in your velocity is 1200 rad/s or 11111 rpm.
You can either increase the pressure, or use a smaller turbine wheel.
Note that the centrifugal (exploding) force is v²/r, so smaller wheel -> more acceleration -> wants to explode more.
Marvin the Martian:
Where's the Kaboom? There's supposed to be a massive shop destroying Kaboom.
"like many purple hearts before it" diabolical
AH yes SHART the best shield LMAO 🤣
1:13 I know making and doing stuff is hard, but I'm honestly blown away at the simple, easy to avoid stuff that goes wrong in your videos. Like the instant the water jet turns on here, it very obviously splits the wood along the grain, so the part is pre-broken before the actual test begins. Great job lol 👍
This made me laugh so hard😂 0:42 😂😂😂 0:42 😂 0:42
Ooooooo love the firebird
Loved his buddy's grasp of what most people mean when they say 'borrow'.
engineer here.
- these objects are quite dangerous
- those speeds are quite dangerous
- everything is quite dangerous
My mom has that exact same mouse 17:50
what a good title
14:25 Ooh, indeed; antibubbles, neat
Semicolonnghh
I am really enjoying your toilet scrubber wand/scepter of power.
You should probably only spin the wheels clockwise. That last one was so close to falling off and spinning it clockwise would keep the nut from rattling loose.
(Aerospace Engineer here) I wouldn't be surprised that at those speeds you're getting significant aerodynamic drag which is equalling the force exerted by the waterjet, especially with the large flat spoons - You can do a rough back of napkin calc by doing 0.5*rho*v^2*Cd*A, where V is the wheels tangential velocity, at the spoons, Cd would be the coefficient of drag for a flat plate (ish) and A is the total area of all your spoons. Okay I've now said spoons too many times, hope this helps !
I just found your channel... Great video!! The subtle comedy is hilarious! I loved the wood punch! That got a legit laugh out loud 😅
11:32
My metal shop teacher would have a few choice words to say about what you did here lmao.
1:50, is that S.H.A.R.T.? Man I love S.H.A.R.T.
17:10 YEAH OLDBOYS!!!! Been skating these for years.