Flywheel Trebuchet

[@BPSspace]

Your videos are consistently excellent, Tom - that high speed camera was an awesome investment!

[@nikolausengh6630]

Completely agree! Yours are too!

[@TomStantonEngineering]

The high speed camera is honestly the best investments I've ever made! Thanks Joe, but how do I respond to such a compliment? Your work is always awesome!!

[@morkovija]

Hey Bernard! Nice to see you here taking an chill break from space stuff!)

[@NicMediaDesign]

Is it a Chronos? I personally use my Sony cameras with HFR (1000fps) mode simply because it is build in :P

[@eliassmith8101]

you need one to joe! your videos are also awesome

[@triplem9805]

"My old trebuchet hasn't aged very well...". As a conversation-opener, that takes some beating.

[@dynamicequilibrium5322]

I took my old trebuchet apart to get the 4x4's back. :/

[@bertjesklotepino]

"my old trebuchet" I dont even have a new one

[@smartereveryday]

That's really fun.

[@pterodactyljones7801]

The science man himself!

[@NEprimo]

thanks for giving this dude the attention he deserves

[@conceptualme]

Destin! Funny seeing you down here, just finished your video about extinguishing fires onboard a submarine. You and Tom are both awesome - any chance for a collab?

[@catwaterboy]

Collab

[@sabelch]

Supersonic baseball trebuchet?

[@KoalaTeaGuy]

The flywheel coming to a near deadstop left me speechless. such a good representation of the conservation of energy

[@MRptwrench]

Yes! Exciting ain't it, how most of that energy was apparently transferred into the projectile?

[@shampabiswas7327]

@@MRptwrench that one unlucky bird hit by the ball will experience all the energy it has stored

[@williamstephenson2550]

Does that mean good energy transfer , I suspect?

[@g_rr_tt]

@@williamstephenson2550 It represents high efficiency.

[@armoroscott6438]

​@@shampabiswas7327 R.I.P (rest in pieces)🪦

[@chungdha]

Somewhere in the distance someone is getting constantly bombarded by tennis balls

[@a4h426]

*distant screaming*

[@mirthenemrys]

or in the distance there is a very happy doggy

[@sentane8031]

@@mirthenemrys what dog there was no dog, and I never ate any dog?!

[@AWildBard]

baaa!

[@jammiewins]

I can just imagine his neighbours. *CRASH* "STANTON!"

[@jaridkeen123]

I feel bad for the farmer that kept getting bombarded for several hours under Medieval Siege

[@CorePathway]

The sheep remember.

[@BierBart12]

​@@CorePathway They will retaliate when the time is right.

[@marcwolf60]

​@@CorePathwayTennis ball suppositary.....

[@jeffthompson2967]

@@marcwolf60 OOoohh... Too Far Mate, Too Far... Lol

[@bluefmi]

@@jeffthompson2967 "OOoohh... Too Far Mate, Too Far... Lol" you ... extracted it, so you know how far it went?!

[@MarkRober]

Dude. Well done on so many levels. Not sure how I’ve never seen your channel till now but i’m glad the algorithm made the suggestion.

[@TomStantonEngineering]

Thanks man! Glad you found it!

[@YotoBoto]

He has done a lot of great stuff

[@ClaudiusJovianus]

Praise the algorithm!

[@DanDunfordRSM]

Same man I watch you and smarter every day all the time, funny we found him on the same day

[@B0Oty]

Collab ???????? 🥺😏

[@orchunter8388]

Imagine, you’re making yourself a morning cup of coffee, looking out the kitchen window hoping to see birds and deer, but instead you see your neighbor building a trebuchet. Thinking to yourself, I wonder if this house can withstand a siege? Also contemplating and calculating on when to return and how long to have borrowed a weed trimmer.

[@Schizophrenic_Frog]

you are awesome and i love this

[@Smellmipoo4932]

Exactly. Also, If you decided to leave before the siege I’d advise to still make yourself that cup of coffee but make it in a portable insulated cup, with a lid on it. You might get hungry during your escape from the siege; this is where some ham and cheese sandwiches would come in handy. If there’s time you could wrap the sandwiches in tinfoil or a similar product to keep them fresh, but ONLY if there’s time.

[@Skyscraper2015]

Or you chillin' with your morning coffee and you see random tennis balls flying past and thinking your neighbour's kids are playing backyard cricket. Then you start seeing flying random objects like apples, or even smallish heavy toys and then your curiosity is piqued. And then you hear "Ok that's good but now I must just tweak the string and release a little earlier". "What the heck is going on?"

[@robertmitchell5019]

No that's when you go out and help to show your on his side.

[@0Sirk0]

Douglas Adams Isn't dead I see.

[@ezradelsman6743]

Alternate title: "Local man launches tennis balls into next village."

[@muh1h1]

*lower earth orbit

[@jm56585]

*Hohmann Transfer Orbit

[@blizzardstr]

International post delivery. Fast, cheap, funny! All you have to do is to spin the handle. France for weak ones, China for strong ones.

[@richardmillhousenixon]

@@jm56585 *Inter-Planetary Transfer

[@jm56585]

@@richardmillhousenixon *to Venus

[@PlasmaChannel]

Not going to lie, this was a brilliant demonstration of energy transfer. Hats off to you.

[@nightrous3026]

love your videos. ive been working in my own tesla coil for a while now. i was wondering if you could tell me what you think of it? i have vids on my channel!

[@dowskivisionmagicaloracle8593]

Awesome! Now add a high-powered electric motor and replace the tennis ball with a Molotov Cocktail. Siege weapon complete!

[@BenjaminCronce]

Shockingly good?

[@tyler4q692]

No keep hat on

[@jackupstate3740]

say this comment on a video sponsored by brilliant

[@Nighthawkinlight]

Super clever concept.

[@krishnajadhav1535]

Tru dat

[@-NGC-6302-]

Tom Stanton, Integza, NHIL, all at the same video? Smart youtubers are the best.

[@amicloud_yt]

@@-NGC-6302- COLAB WHEN

[@440haste]

Super clever lad.

[@wroughtiron7258]

Battle of Neighbor Field. Result: tactical Stanton victory; Neighbor's sheep startled and routed from the battlefield. Casualties: 1 pulley

[@Wintergatan]

You had me at Flywheel, awesome video

[@Driver_Pneuma]

Gg

[@syrew900]

The marble machine could be a trebuchet, Martin!

[@Fgcbear15]

Stop procrastinating. Lol jk. I love your videos and I want to see you in concert already

[@patopeje1472]

Oh my gosh, is Martin!!!!!! I love you, man! your marble machine X is very impressive!!!!!

[@jaybird_the_jet]

I love the marble machine, i semi want it. I love music and marble machines, why not both

[@Andreas-vr3vs]

people 30km away from tom: "why are here so many tennis balls?"

[@aayushchalekar8260]

LMAO

[@mark675]

Gets smashed in the face by another one whilst wondering 😂

[@batchint]

there was an old black and white photo.. of a golf ball landing near a crowd.. because it was so clear a picture you should see the faces of the surprised spectators... wonders if google has a copy.. should I look..

[@Francois_Dupont]

@@batchint dump!

[@LitAlexV]

according to the laws of physics, that ball could not fly more than 627 m, having an initial speed of 80 m / s

[@braddorris4535]

Seeing it almost come to a complete stop when the projectile is released is just awesome and prob one of the neatest things I’ve seen pertaining to physics.

[@engineeredlifeform]

Exactly this,.... we get taught aboubt conservation of energy, but don't really grasp how spooky it can be. Pool balls stopping when they collide with another doesn't seem so spooky, but this? Physics is cool.

[@Kiromos]

The forces on that arm... Yikes...

[@braddorris4535]

Kiromos , right! It’s so smooth though that, it looks as if the arm didn’t notice, but when you break it down and understand what is going on, it’s unreal on so many levels the forces on it are and yet so graceful.

[@yoyobeerman1289]

This is actually a commonly used method of reducing angular velocity during rocket launches.

[@ThErElOaDeR99]

@@Kiromos yet human arms plus tennis racket can hit a tennis ball nearly just as fast... If thats crazy then the strength of our bodies is insane!

[@terryhanrahan1866]

Old mechanical engineer here, I LOVE this. I'd be a) adding a motor; b) increase the rotating mass; c) broaden the base; d) explore other projectiles.. past baseballs; and e) scale this up Big Time. I've got 100+ acres to play with aiming. . GREAT video, glad I found this, subscribed now.

[@werdaverd]

Next Video: I build a trebuchet that can shoot tennis balls into space 😂😂

[@johnsinclair3067]

I'd also increase the crank pulley size for a greater ratio... Or better yet, steal the gearing off an 18 speed bike so the "gunner" can walk round onto target

[@two-sense]

I want to see old cars flying through the air.

[@marsrover001]

"maybe I need to put a motor on it" Yes, yes you do.

[@feldamar2]

No. He needs to put a BICYCLE on it. Leg power over arm power. Also a finer balance on the flywheel.

[@FMHikari]

No. He needs a motor. Nobody wants to sweat.

[@thewolfin]

And make an even bigger one with an eight-spoke wheel and a heavier counterweight.

[@SIRUNOWN]

2 horse compressor Motor will out-drive most fit people at 3400rpm or so, I think I have a spare one in my Shed...

[@Spedley_2142]

@@feldamar2 He needs a motor, no way I'd be anywhere near that if it were going faster!

[@Bw40099]

he understands quality not quantity and that’s what makes him such a great youtuber

[@adamhale6672]

But also has pretty good quantity

[@Bw40099]

@@adamhale6672 yes

[@Bw40099]

thank you guys so much ive never gotten this many likes before

[@mattdumbrill8324]

Almost like Will Osman, but with higher effort videos

[@Bw40099]

Matt Dumbrill never heard of will osman before

[@BaumisMagicalWorld]

One of the coolest videos I've ever watched. No nonsense blah blah, concise, no disruptive ad segment, and a cool demonstration of physics. When you got the contraption to slow down so fast, I immediately understood what you were doing and was fascinated by how this is even a thing. Marvelous!

[@JoelCreates]

That is one wicked uppercut machine

[@UltraBadass]

Uff great way to loose an eye, I just wonder what he'd do when he inevitably has to go over to his neighbour asking them to get it back

[@Erik-ez4rh]

Maybe you should build a hot glue trebuchet? I want to see what velocity will be enough for hot glue as you seem to be exploring this question.

[@delta7_actual]

"Playing fetch with a friends dog in another Postal code."

[@benjaminlamothe2093]

Could you imagine launching a tennis ball several kilometers hearing a tennis racket and being domed by an even faster tennis ball XD

[@ENCHANTMEN_]

Then you hear the Wii Sports announcer say "Nice Throw!"

[@qaewsrdtfcgzvhbujnkim]

@@ENCHANTMEN_ I can't stop laughing at this

[@Bloockackack]

Tfw it flies right through the racket

[@androgenius_alisa]

Ball flew right to Stuff made here, it seems

[@tweex1]

*Roger Federer just walking down the street, sees a tennis ball come out of the Heavens, pulls a tennis racket out of nowhere and just CRAAACKS it right back* *gets beaned in the head by the return* "DOG, AGAIN!? HOW DOES HE ALWAYS RETURN IT!?? HE'S NOT EVEN FROM THIS COUNTRY."

[@SamBrickell]

"That is gonna kill somebody when it lands in boston."

[@felixnyamongo]

😂😂😂 Saw what you did there

[@MusicalMethuselah]

"I run away to stop the highspeed camera" has the same energy as "I move away from the mic to breathe in"

[@CIubDuck]

Dude that was what I immediately thought about when I read that text lmao

[@marekstanek112]

"I run away to catch that ball, cause I'm Flash".

[@AubSec]

I mean, high speed cameras have a limited buffer, they only capture about the last 5 seconds of video. Depending on settings and such. So he probably has to run to catch the shot.

[@zenosan4394]

Amazing ref

[@zikzein]

🍫 🌧️

[@philippschafer2124]

The intro: A big heavy fast-spinning metal wheel right in front of his face. "This video is sponsored by SimpliSafe" Me: "That didn't look very safe to me"

[@LordDragox412]

Yeah, where is his safety tie? Kids these days, I tell you...

[@blizzardstr]

"SimpliSafe, do you have an insurance from a siege with a flywheel trebuchet? I gave one...good neighbour and a lawn full of tennis balls"

[@wandererstraining]

I was worried about the rope whipping him in the eyes or something!

[@kadmow]

But no one is going to steal it without detection while simplysafe is in the case. User beware, this is Simply Not Safe.

[@integza]

Can you please lend me that beast so I can throw tomatoes at a Nickelback concert?

[@ivorcelini2039]

Integza!!! How are the turbines going?

[@Socks3657]

You both are an inspiration

[@integza]

@@ivorcelini2039 Very good Sir! Thank you for asking!

[@redsquirrelftw]

Need to launch pictures inside frames. "Take a look at this photograph!"

[@josphe9011]

Whats next on your bucket list?

[@Cheeky_Goose]

I think this is one of your best videos. It's just really interesting to see how flywheels can store energy like this.

[@NicMediaDesign]

I love the part where you try to drain the flywheel off all of its energy.

[@martin09091989]

Yea, thats awesom to see! looks a bit surreal.

[@feha92]

Feels like the way he is going at it is flawed though.. Won't simply increasing the mass have diminishing returns and never truly siphon it all?

[@michaelslee4336]

It’s like watching yo yo despin weights release on a rotating body. It’s almost un-natural, I believe the physics but at the same time my brain says no way.

[@shadowreaper8895]

Quick Summary: Red-headed menace slaughters a field of sheep with some aluminum and a physics textbook.

[@byte2600]

LOL , so funny

[@zecuse]

2:49 I'd say he had it coming.

[@paxundpeace9970]

Poor sheeps

[@AndreaMinosu]

The balls and apples launched at so high speed is like a bullet and can hit a squirrel, a sheep, any animal or even a person too. This guy has no thinked about animal or human safety. I reported it by clicking on the appropriate KZbin button (3 dots menu, then "Report", then "Harmful or dagerous acts").

[@arthasgrinds7039]

@@AndreaMinosu Thanks Andrea, I reported your comment on the appropriate KZbin button (3 dots menu, then "Report", then "Unwanted content"). I am SURE that he is not just launching tennis balls at a child's playground as has thought about this issue before starting.

[@bpm9295]

99% of other DIY/tinkerer KZbinrs would have taken three times as long to make this video half as informative. Mad respect - you seem like a genuine and humble dude.

[@bpm9295]

@無名賢者 if he's an engineer by trade that still doesn't make this an engineering KZbin channel - if it were this would be like AutoCAD tutorials and MathCAD demos. Nah, this is thoroughbred YT Tinker/DIY genre and there is *nothing* inferior or lesser about that. I oughta know - I'm an engineer ;) and we're 99% just total losers, trust me, can't make a riveting second of fillm to save our lives. This guy is doing something non-engineer here.

[@gayledonahue3395]

@@bpm9295 I have to agree with you. I am not an engineer but spend lots of happy hours with lots of mechanical every week lots of wrenching fetching and humor, but never could we make a video like this. It would take 10 hours just for them to show the math lol then the hours spent with cad to get the parts then all the "Babdaids" so meney bandiads

[@ColAlbSmi]

It would have been 2 30 minute videos

[@ralanham76]

Yes, it seems like a lot of KZbinrs do talk a lot, maybe they have ADHD ? I think the ideas are fine they could be more concise

[@AKRAM-fk9ze]

Yeah man exactly, the dude deserves respect

[@theinspector1023]

I love the way nearly all the energy is transferred from flywheel to ball. Splendid!

[@yumm95]

Imagine being this guy’s neighbor and wondering where your dog is getting so many tennis balls

[@douglaspealing5608]

Underrated comment

[@Lemmingcave]

pretty sure it the neighbour from the other city then

[@krizsanbence6510]

imagin this guy living the other SIDE of the town and wondering your dog is getting so many tennis ball

[@TheWorldEnd2]

@@krizsanbence6510 imagine there being a game of tennis going on on the other side of the town and random tennis balls keep appearing on the field

[@constantinshim4271]

@@krizsanbence6510 It can be a form of communication, like attaching notes to pigeons.

[@Asdayasman]

"A crank handle" NO MOUNT A BIKE THERE Legs are better than arms. EDIT: You in the replies are all missing the point - this is cool because it's human-powered. If you can get more power out of the human, it will shoot further and be cooler. "Put an engine on there lmao" is no longer cool, you may as well just make a vaccuum cannon or something (which is also cool, but for very different reasons).

[@gokhan5016]

LIKE THAT EVERYONE THATS RARE

[@0gnob]

Nice

[@shivster0592]

Yea a motor and a free casting hub

[@rohitrathnam6057]

Add a lawn mover motor, and it turns into a Colin Furze video xD

[@vao879]

Jet turbine?...

[@Maveraxus2.0]

Neighbors be like: “WHY IS A TENNIS BALL EMBEDDED IN MY TREE?!”

[@scout5988]

Next the first dong in space program starts. Neighbor: “why is there a weenier in my tree??”

[@NeganLucilleForever]

all jokes aside the neighbors reported an unusually high incidence of broken windows during the production of the video. lol

[@thegoldengood4725]

@GD Magic Gaming u cant hear a doorbell in space lo

[@lucass4827]

“Local wildlife researcher gets concussion by tennis ball”

[@scottthroop6208]

To increase velocity and distance, with only a minor modification to that rig, think fishing rod. The dynamics of casting a fishing rod is similar to the combination of a trebuchet with the stored energy of a catapult. A well made casting rod is designed to deflect and load up stored energy on the forward swing, and release that energy into the momentum of the cast weight at the end of the forward swing. The line is released precisely as the stored energy in the rod is released as it recovers to its original straight state. Casting distance is a result of not only the swing, but also the "fling" at the end of the casting cycle. A properly made 12' tournament casting rod is capable of sending a 3oz lead sinker well north of 200 yards, while towing line off of the reel behind it with far less moment energy demonstrated with that trebuchet. Ive had the line break during casts and the sinker, without the drag of line behind it, will fly several hundred yards beyond line if sight at lethal velocity. If the rigid arm on that trebuchet was replaced with a high modulus tapered carbon rod blank (or a recurve bow arm or similar) rated to deflect and load up with the weight being launched, when the ball is released, the rod will load and store energy, and release that energy rapidly just before the sling releases from the pin. The combination if the immense moment velocity of that trebuchet and the sudden rapid release of the stored energy should amount to a longer acceleration time imparted on the ball, creating higher speed and longer distance. Up the anty with an additional flywheel geared 3:1 to eliminate the momentum stall as the ball swings outward and loads the carbon rod blank, you will have a cannon on your hands.

[@Belinor6]

I've seen this video so many times, it's so satisfying to see the flywheel stop, there's something of beautiful in seeing an almost perfect transfer of energy, like you are operating in the border of what the rules of the universe allow you to

[@josh0147]

*heard intruder downstairs* “Honey get me my trebuchet”

[@dowskivisionmagicaloracle8593]

Awesome! Now add a high-powered electric motor and replace the tennis ball with a Molotov Cocktail. Siege weapon complete!

[@archosauropre-historico8708]

@@dowskivisionmagicaloracle8593 This is how we kill Tigers in medieval times

[@joepie221]

Lets just whip up a machine that tosses tennis balls at 180 MPH. You are my kind of neighbor. Nicely fabricated and presented. Thumbs up from me.

[@dumpeeplarfunny]

Somewhere there is a dog controlling this man's actions, getting ready for the most intense game of fetch ever played.

[@danielbrown9813]

i was thinking 'man that'd be awesome if he put a motor on this thing" right when you said "perhaps i'll put a motor on the crankshaft". can't wait for THAT video lol, thanks for the great content

[@ninefors]

Exactly my thought, it would be fun to see this supersized, more weight on the flywheel and a motor.. If it's worth doing, it's worth overdoing.

[@mathevideos9909]

This was officially the smoothest segway to an ad ever on youtube. Hats off to you sir!

[@doodlegoat]

You mean segue. Sounds the same, spelled different.

[@ImMora1]

Burglar: sneaks into a shed full of cnc and other expensive machinery. "jackpot! What is that sound?" *trebuchet revving up*

[@mckenziekeith7434]

Trebuchet goes brrrt.

[@carsonplaysminecraft1018]

LLOOLLLLLLLL

[@braytonlarson1860]

Crouched in the corner Tom laughs maniacally, yet somehow also in excitement, rapidly winding up his flywheels and running calculations on his Casio to mathematically impact you with some serious Joules.

[@temseti0]

@@braytonlarson1860 and he aims it JUST RIGHT to hit the male intruder in the crotch. Thats right. he hits the guy's jewels with some seirous Joules.

[@Superknullisch]

@@temseti0 aaah you almost brought it.. Should've been.. "And he aims it JUST RIGHT to hit the male intruder in those Joules." or.. "And he aims it JUST RIGHT to hit the male intruder in the jewels with those Joules!!" ; )

[@frasersteen]

If only you had some old ebike motors you could stick on it.

[@John-ih2bx]

The design, manufacturing, calculations, theories, and presentation/narration were amazing. I've subscribed..

[@JeremyMcCrearyTechnicalLEGO]

Having made my own working floating-arm trebuchets, I have some appreciation of the many difficult and complicated engineering trade-offs involved. Here, you played the trade-offs beautifully with quite literally a revolutionary new design. Not only that, but you explained the main trade-offs and the design process with exceptional clarity. Bravo!

[@spamrules1]

Tom: "Maybe I need to get some baseballs and stick a motor on this thing!" Me: *checks time left* Me: Ahhhhh

[@jackass123455]

smarter everyday colab incoming!

[@willhaney96]

worlds only "defense" trebuchet, for when some one builds an attack-castle next to your castle with out you noticing

[@pacman10182]

"attack-castle" I think they call that a siege engine

[@otm646]

You need to watch some T-90 for the castle wall

[@glennleader8880]

He only popped out to the shop to get some milk.

[@tammy7098]

Haha that's nostalgia for me. I used to build my own castle near enemy bases and it would attack them. Literally an attack castle

[@calvingreene90]

Or you put a trebuchet on top of your keep to destroy the attackers siege engines and trebuchets.

[@thomasawl]

Somewhere theres a person who’s really confused on why tennis balls are being launched at 186 MPH towards their house.

[@Majima_Nowhere]

Next video: Breaking the sound barrier with an electric flywheel """trebuchet""" Love it

[@aviator2252]

then upscale to 200kg projectile

[@mr.pineapple7620]

Breaking news. Man builds KKV launcher in his yard

[@aviator2252]

@@mr.pineapple7620 dont be giving DARPA anymore ideas

[@mr.pineapple7620]

@@aviator2252 yea prolly better not to do that 😅 Though flywheel powered railguns the have been considered.

[@aviator2252]

@@mr.pineapple7620 DARP produces ai operated flywheel kkv trebuchet capable of firing ai guided projectiles 50km

[@rixille]

Have you considered putting tracking devices into the trebuchet projectiles and convert that into a visualization? It would be neat to see 10 shots done and to see its accuracy/grouping.

[@brian9829]

u got 2k USD? that would be the estimate cost of your request

[@aschelocke5287]

@@brian9829 a youtuber with 1.12M subs does

[@Sierra-Whisky]

​@@brian9829 $2000!? You can get trackers for well below $50 each.

[@reidprichard]

​@@Sierra-Whisky are those capable of polling accurately enough and at a high enough rate for a projectile? I'd think that would require pretty expensive hardware, if it's even available given the restrictions on GPS.

[@brian9829]

@@Sierra-Whisky will it survive a trebuchet impact tho? u could even make one yourself using some microcontrollers but durability is an issue

[@celticpridedrums]

There is a very happy golden retriever hiding in those woods chasing every tennis ball and really enjoying himself

[@TuBui2]

couple general trebuchet questions: 1) are launches/launch speeds consistent? 2) can you actually "aim" a trebuchet? (i guess these questions apply both historically and for this modern rendition)

[@jakukuja7736]

Shame nobody answeared yet so I´ll do the honors. The lauch speed of clasic weight/lever trebuche should be as consistent as the weight of the projectile. And yes, siege engeneers would spent whole lot of time doing calculations to ensure the siege trebuche would hit it´s target. You dont want to spent month building one and realising it cant even hit the castle wall (you generally want to go over the wall and land inside). But its also good to know many sieges ended before you could build trebuche since people percieved then as we percieve H-bombs now. You simply lost your will to fight

[@BlackBanditXX]

Elaborating on the previous response, the hardest part of 'aiming' a trebuchet is taking all the variables into account. The air-resistance of a projectile actually matters quite a bit, but if you account for all of them, you should be able to land repeated hits in a rather small radius around your target.

[@spokehedz]

Wow, watching the arm just STOP because of how perfectly the energy transfer being "optimal" was really unsettling!

[@realmannotcow]

They actually use a similar technique to stop spinning spacecraft

[@Timestamp_Guy]

I wonder if he could go just a smidge heavier and make the flywheel be rotating slightly BACKWARD after launching? That would be really weird to watch.

[@Ostsol]

Tom: "... but nowadays there's a more effective solution..." Me: "GUNS?" Tom: "... from SimpliSafe." Me: 😞😅

[@Felipemelazzi]

I was looking for a comment like this. Thanks

[@rhein_provinz]

Had the same thought! Expected a kJ calculation of a 8mm Parabellum bullet compared to a Trebuchet apple... Maybe next time.

[@brianh.000]

Yeah, my first thought was guns too. But considering his location, I knew it couldn't be.

[@marvindebot3264]

Isn't this the system that can be defeated with a random garage door opener?

[@Ostsol]

@@marvindebot3264 @LockPickingLawyer has a video demonstrating that.

[@bamboozledbob3298]

8:45 Destin Sandlin: "Did someone just talk about accelerating baseballs?"

[@braiansingh9730]

"What have we done?" You know damn well what you've done destin!

[@saitavr]

Destin needs to come visit Tom

[@cantstoptommy7077]

And Destin needs to bring some of his baseballs!

[@skiinggator]

A baseball at 150mph would be terrifying

[@rhpicayune]

Watching this video on July17, 2024, From Coastal, Mississippi, USA. Love your video, but not sure why I got it in my recommendations three years after you made it! Great work, and awesome technical knowledge you have !

[@CaptainBlackadder75]

Thought you were gonna say “and now I’ve finally solved the mystery of why I woke up one morning 3 years ago to find a load of tennis balls in my garden.”

[@DrBernard989]

Seeing the flywheel almost stop was really impressive. Definitely a bit of physics that doesn't look intuitive straight away.

[@Yora21]

The weird part is that the whole thing doesn't shake. You could easily put a break on it to force it to a sudden stop, but in that case the whole thing would probably flip itself over, like breaking the front wheel of a bike at high speed.

[@traugdor]

@@Yora21 all that energy is carried by the projectile. It's amazing, isn't it?

[@Yora21]

@@traugdor What I am surprised by is how much energy gets transferred. The ball obviously has a lot of kinetic energy already while it's spinning around the axle, but I don't see how it "sucks" the energy from the wheel into itself. Intuitively, the ball should go in a straight line with the same energy it had before separation, and the flywheel continue spinning with the same energy it had.

[@SonsOfLorgar]

@@Yora21 that's the effect of the sling section.

[@damageddynamite4484]

Someone’s going to end up with all of their windows shattered and all their dogs satisfied

[@shannonlawhorn1674]

Yeah but that's somewhere in the next county, nothing to worry about.

[@benjamincoram7036]

Him standing next to a massive pole spinning fast enough to (probably) kill him is making me nervous.

[@mrbouncelol]

Yeah his method of securing didn't look too fantastic given that if the apparatus fell laterally the arm would surely break some shit

[@JakeShuf]

@@mrbouncelol However the flywheel would have likely a decent amount of gyroscopic motion that would want to keep itself spinning in the same access of rotation. The faster it spins, the harder the machine is to tip over, assuming his cranking isn't rocking it back and forth.

[@izysly6051]

Hah ! You said "massive pole"

[@burre01]

yeah i was thinking for gods sake add some cement blocks to a frame at the bottom man the entire video

[@benjamincoram7036]

@@JakeShuf My main concern is the fact that if he trips over or something while spinning it up, he's kinda fucked. Big heavy spinning things scare the shit out of me.

[@evervigilant]

Amazing! Just the concept of adjusting the projectile weight to use all the kinetic energy blew my mind. I love a video that leaves my imagination swirling with design possibilities.

[@Warcherman]

I feel like we need a makeshift castle wall to see how effective it is Tom

[@alexm7689]

Imagine you’re breaking into this mans house, and all you hear is “now where’d I put my trebuchet?”.

[@dwaneanderson8039]

"I'm warning you. I have a trebuchet, and I'm not afraid to use it."

[@MrTeddy12397]

all you hear is: "at seven kilograms once the ball is released it leaves a sling with a kinetic energy of 132 joules meaning the usable energy efficiency is just 31 percent"

[@hesperosshamshael2873]

>minor adjustment to the release timing and angle +40 mph w h a t

[@Kasmuller]

Thats physics for you

[@markhammer643]

In the mid-'70s, I had a summer job working in a factory that made snaps and fasteners. I was responsible for maintaining and reloading 4 punch-presses, all of which had big flywheels that spun at something in excess of 50RPM. When the punch got jammed in the sheet metal, the protocol was to hit the "Stop" button to kill the motor, and unjam the punch. On this one occasion, because the flywheel had come to an apparent dead stop, I neglected to hit the Stop button and attempted to unjam the unit with a prybar, placed into one of the holes along the perimeter of the flywheel. I initially tried to pull the prybar towards me, but the angle was awkward, so I tried to do it by pushing away, which ultimately proved to be successful. The flywheel instantly seized the bar from my slippery hands and flung it across the factory, AS IF it were a trebuchet, where it flew about 20 yards down an aisle, missing the several dozen working on either side of that aisle, and smashed a chunk out of the concrete floor. I should note that the flywheel was positioned inches away from a wall, where the prybar would have bounced back from and certainly maimed me, if not worse. The shop foreman came over and calmly put his arm around my shoulder, taking me on a walk around the shop floor. He pointed to several different large holes in the wall, adjacent to other punch presses. He told me, "You're not the first to do this, and probably won't be the last. Just don't do it again".

[@jeffstienstra3615]

@markhammer643 That is a stellar response from the foreman. You already KNOW you did something wrong. You already KNOW you or someone else could have been injured or killed. You are in shock, and you will NEVER bring a pry bar even remotely close to that machine again while the flywheel is spinning because you KNOW what will happen. Some people think yelling and anger is the best way to teach a lesson. But this sort of response instills the lesson to be learned from the incident, rather than inducing shame, defensiveness, and denial - none of which are good for learning or retention. I had a service tech short out a circuit board and sent sparks flying, putting us behind schedule and cost me a few hundred bucks. I asked if he knew what went wrong, briefly reviewed what went wrong, went and got another board, and let it be. Later that evening he said he had been waiting all day for me to chew him out or fire him. I just said that it sucks it happened once, but I'm confident it won't happen again because now you KNOW what will happen if you do it again. Before you knew in theory, now you actually know. You don't want to make mistakes on purpose, but mistakes are one of our best teachers.

[@fnamelname9077]

The mutton counterattack was as swift as it was terrible.

[@Kaptain13Gonzo]

Bleating and babbling we fell on his neck with a scream ...... [entirely stolen form Pink Floyd: 'Sheep' / Animals album]

[@fnamelname9077]

@@Kaptain13Gonzo Pink Floyd knew, they knew.

[@alexandercolgan6596]

Thank you for the inspiration and absolutely incredible proof of concept, Tom. Over the last six months or so, I built a scaled-up flywheel trebuchet with an arm diameter of about 16 feet. It almost works and hopefully will be competing at the Rapid City Pumpkin Festival on September 25th. I'll make an actual video of it eventually. Keep up the fantastic work on your channel!

[@Adam-gf2fg]

I was really wondering how this idea scales and compares to traditional trebuchets. Given normal material strengths like steel, just how fast could you get a projectile moving? Would love to know how your attempts panned out!

[@DriesDD]

Hey man! I'm from the future, from a country which has a pumpkin festival with a pumpkin trebuchet competition. I wonder how the trebuchet turned out? Did it work and do you have a video?

[@doom0d1]

how did it work? any vids?

[@ivanildojesse7614]

❤​@@Adam-gf2fg

[@DeuxisWasTaken]

This is really interesting, especially the way the flywheel gives off its energy to the projectile. When I saw it slow down I was like "yeah that makes sense, but how exactly does it work" and then got enlightened by the excellent slow-mo.

[@derp-construction3341]

Besides a great design, you did a wonderful job of breaking down the mechanical process of how it functions. I have read seveat books on siege equipment, but have never seen gow trebuchets work broken down in such a easy to comprehend way. Many thanks.

[@johnfrian]

Fascinating seeing the flywheel almost crawl to a stop when you increased the weight of the ball. Very cool build!

[@javidaderson]

Tom looks over the fence at the sheep with rage in his eyes. Tom, "soon"

[@nasonguy]

Tom takes out a sheep: "He disrupted the infrastructure..... attacked the food supply..."

[@downhill2k013]

*Does the most dangerous thing possible* “this video is sponsored by simply Safe!”

[@MikeBarbarossa]

that swinging arm could have decapitated him if that thing tipped or the arm falls off

[@jackknopf5974]

Just happened to see your thumbnail and it looked interesting. Just subscribed from the United States near Chicago, Illinois, USA. Fantastic details. Excellent video structure also. to the point, with no extra video shoved in. Brilliant!

[@Pwn3dbyth3n00b]

Imagine being a sheep in a field then getting hit by a tennis ball going as fast as a pro tennis serve.

[@thatPingu99]

Would be pretty baaaad

[@quackadoo3101]

thatPingu ha

[@justinthorne8979]

As soon as a saw the title and thumbnail, my initial thought was how challenging the trigger mechanism would be so that it releases at the correct angle. Impressed you came up with such a simple and functional trigger! Question: at 4:58 the diagram shows the lever arm extending passed the point of rotation. Is this a mistake in diagram video editing, or did you use this length for your calcs as well? Lastly, its so satisfying having the ball mass tuned perfectly to the angular inertia , very cool! Keep up the great videos! I'm a senior engineering student from Halifax, NS, Canada and I love your videos! You're graduated now right? Are you working in industry at the moment or do you plan to just do YT?

[@shallowcaster]

Justin Thorne , the word elegant came to my mind while watching that segment.

[@TomStantonEngineering]

I measured past the point of rotation because the exact position of the axle isn't clear due to the frame covering. In that diagram, my hand is covering the tip of the arm, so I actually measured it earlier in the rotation. Yes I graduated 3 years ago now and have been creating these YT videos ever since haha

[@justinthorne8979]

@@TomStantonEngineering gotcha, makes sense! And that's awesome, good for you

[@martin09091989]

He just used the lever arm as a known length for a visual comparison. Has nothing to do with the geometry of the device. In fact this is much more simple than a classic trebuchet because its pretty much just one reference frame. This technique is also used for satellites that are boosted by a spin stabilized uper stages, to stop their rotation!

[@Bordpie]

@@martin09091989 That immediately sprung to mind when I saw the video title and thumbnail. I thought the sling would be wrapped around the flywheel and it would be like a yo-yo despin manoeuvre. It still is a despin but with the longer lever arm of the trebuchet. A smaller lever arm would take longer to accelerate the ball so you will have more energy loss before releasing the ball, but it would be easier to spin up to high speed since you don't have the air resistance of the long arm.

[@hngldr]

Now I want to see this hooked up to a pedal bike! That seems like an AWESOME way to motivate to practice sprints on a bike! Great video - I love it

[@shirolee]

Brilliant! This is the coolest thing I've seen in a while. I love the engineering behind this.

[@dwaynmeyer4737]

Legend has it that people are still being knocked out by apples randomly falling from the sky.

[@jmoneyjoshkinion4576]

One time traveled to Newtown's time and missed him by THISSS much.

[@wintercoder6687]

Very smooth transition from your trebuchet to the Simply Safe commercial. It kind of made me feel like I was being entertained all while my pocket was being picked. Very cool project!

[@chrishayes8197]

yup - excellent transition. Good writing beforehand improves any presentation or performance!

[@Seraph.G]

This is about the coolest thing I've ever seen

[@demonika13601]

Bro, can't believe I've not seen your videos before today; especially since I'm such an avid fan of davincis mechanical innovations. Superb video: it provides entertainment, scientific data, means of invention and operation, and so much more in a manner that an average person (no in depth education or study) can comprehend. Instant subscriber

[@MeantimeEntretempo]

What magnificent engineering, congratulations here in Brazil.

[@vigilantesdobrasil]

That tennis ball just passed here in Brasilia a few moments ago heading to Rio de Janeiro

[@domsquaaa4323]

COME TO BRAZIL

[@collinrogers4742]

NA... NANI?!

[@o0OMysticO0o]

We're building a bigger version soon you will have some company in Brazil.

[@baronn1504]

How is it in a land down under?

[@thepepchannel7940]

“This video was sponsored by Simply Safe” *Launching a Tennis Ball at 180mph+!* Mh-mh

[@Brandon-sc1fz]

While watching through the video my thought: " I wish he would calculate the efficiency through energy conservation. " ...... Seconds later going in to it. Great Videos

[@koalasandwich4876]

Fantastic project, communication of physics, editing, camera quality. Awesome.

[@Whfox]

"I run away to stop the highspeed camera" Reality: he runs to hide from his neighbours.

[@robertgolding5398]

some friends of mine made a cannon using airbag detonators. fired a 4 inch projectile though both sides of a washing machine . i have very strange friends. glad to see the younger generation carrying on the tradition. keep it up tom. bob

[@sam23696]

Somewhere there is a fantasy writer screaming in delight watching this.

[@thumb-ugly7518]

I imagine a long axle along a wall. It's powered by several waterwheels and has flywheel-buchets all along the axle. They have clutches to engage the power of the main drive axle. They could even adjust the elevation angle of the assembly by rotating the release assembly on the flywheel axis. All of this, to launch the broken bits of many failed projects at invaders.

[@seedmole]

@@thumb-ugly7518 I imagined something like this powering a long line of "instant legolases" along the top of a defensive formation, or on some kind of portable cart-mounted setup where it could be powered by manual labor or beasts of burden.

[@8Robba]

HERE I AM! I am creating a Pen & Paper Fantasy game and this is material :)

[@taoisttiger4702]

Make it leg powered like frome a bicycle sprocket you could even keep the adjustable gearing to REALLY get it moving :D

[@michalwa]

random person in the forest: *struggles to recover from being hit with an apple accelerated to insane speed* tom: PROJECTILE WEIGHT = 180g

[@sebastianmuller1210]

Doesn't the apple "disintigrate" mid flight? Like rockets "disintigrate". 😉

[@madmushroom8639]

6:18 Intense Trebuchet Warrior Face

[@maddi5920]

He looks like he is experiencing severe pain...

[@MisterTingles]

that was one of the smoothest segues to a sponsor segment I have ever seen...

[@josephmarc6263]

My sons and I built a traditional trebuchet when they were in their teens, all handmade with old style tools. It had a 14 foot throwing arm and a 100 lb counterweight. We made it with removable wooden pegs so it could be broken down, mounted on wooden wheels and hauled like a cart by the boys. We tossed a water balloon several hundred yards! It was great fun!

[@Maake986]

I absolutely love how the release of the sling sounds like a whip. I wonder if you could make it go supersonic aswell?

[@Excludos]

You can hear the crack from the sling-string, so it's going supersonic :)

[@Narcan885]

That's..... why it sounds like a whip. Whips do that crack exactly because the tip goes supersonic. To be heard trough a shitty microphone in the open that sling is probably going super as well.

[@ninjafruitchilled]

@@Excludos It's not, though, it's going 180 mph or whatever he said. The string is what released the tennis ball so they are moving at the same speed at the point of release.

[@abrahamsanchez7455]

@@ninjafruitchilled that’s how fast the ball is going not the whip

[@ninjafruitchilled]

@@abrahamsanchez7455 The "whip" (sling) is what throws the ball, ergo they are moving at the same speed when the ball is released. And after that the whip slows down due to the energy transfer to the ball. So the whip is never moving faster than the ball.

[@santiagoblandon3022]

You would have been a rockstar in the middle age hahaha

[@aayushchalekar8260]

Imagine Trojans had this They'd go through that wall like *EZ*

[@onur1570]

Actually, Trojans were the defenders but I'm happy that Achaeans didn't use that. Because if they did, we might not find the ruins of Troy :D

[@batchint]

like butter..

[@aayushchalekar8260]

@@onur1570 My bad. I just have an outline of the story. A prince and a princess elope and the ex-husband of princess wages war. The other guy gets defeated.[War for years, Trojan Horse] (Poor Guy; he's doing what nature does -Natural Selection) Well as for the Princess, she acts like nothing happened and goes back to her ex-

[@aayushchalekar8260]

Who's the attacker then ?

[@aayushchalekar8260]

I want heart from Tom too ;_;

[@tcf70tyrannosapiensbonsai]

3:50 I felt almost a relief when the test failed - I truly apologise for this - because of thinking Tom Stanton has gotten so good in inventing and building skills, that he doesn't need multiple aproaches any more. Then I realised, Tom did this four years ago. Today, he would probably build it as a multitask routine, while solving a real problem. I don't watch Your channel regularly, but it's always a pleasure to watch You developing an idea to the real thing. Greetings, another Tom

[@Mica45]

that advert transition was so smooth

[@koeielul112]

"And the unsuspecting opposition has yet to realize the potential of this machine" LOL :D

[@TheDro]

put a mini fpv drone on that thing then arm it while it's in air. or will the g-force completely obliterate it?

[@TehTechExpert]

there is a range issue

[@dawidouss6333]

Peak acceleration for tennis ball 368G, let's say drone will have 60G it's still way too much.

[@dihler55]

that drone will crumble

[@panda4247]

or, have a drone flying in the forward-upward direction of the trebuchet; recording the launches; and then try to hit it with the trebuchet

[@Y.M...]

Most electronics not rated for extreme g forces will tolerate this

[@kenbX]

Well done. A mystery tennis ball hit the ISS a few years ago, it must have been Tom managing to increase the speed a bit further. Jokes aside, perhaps you can spin it faster by attaching it to a stationary bicycle frame, spinning it up using the bicycle crank.

[@Minecrafter55666]

When he said "but nowadays there is a more effective solution" I went straight to thinking guns

[@howardchambers9679]

Me too and I live in commie Europe... Except its not commie where I live.

[@davemarin7340]

@losloboslocos there is no communist place in europe bro. Not having guns isnt communist, it's called mentally sane

[@lanceanthony198]

@@davemarin7340 Bruh the UK gets fucked by knives worse than the US by guns

[@____________________________.x]

@@davemarin7340 We had a literal communist standing for election in the UK, let's not pretend we have much freedom left

[@badabomb9946]

@@davemarin7340 You hear that? That's not the sound of bullets or tennis balls whizzing past, that's the joke flying straight over your head.