Optimising a Trebuchet

Рет қаралды 1,455,403

6 жыл бұрын

Trebuchets are pretty complex machines to get right! Having said that, this is a relatively basic design in comparison to many other modern designs (check out The Hurl wiki to see more thehurl.wikidot.com/trebuchet:....
Basically my aim for this was to build the most efficient trebuchet whilst sticking to a basic fixed axle frame. There are more efficient trebuchets out there, such as the MURLIN style, but in terms of ease of build, this is the closest you will get to a traditional trebuchet!
Enjoy my videos? Want to see more? I upload bonus footage/extra information to my Patreon page: / tomstanton
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Пікірлер: 2 200

@Isaacreeper 4 жыл бұрын

Imagine getting hit by a tennis ball at 104 miles per hour that was shot from a homemade trebuchet 300 meters away.

@David-vo1rl 4 жыл бұрын

Did you just use both metric and retarded system in one sentence?

@GielL96 4 жыл бұрын

@@David-vo1rl 'retarded system' lmao

@frankzaffuto3670 4 жыл бұрын

@@GielL96 well it IS Imperial

@brandonbenjamin9452 4 жыл бұрын

David the original comment is how many of us Canadians would talk too.. imperial is often used in dialogue and in construction, and then we use the more accurate system for real math

@Brooke-rw8rc 4 жыл бұрын

@@David-vo1rl Please don't use that word. Besides, it's the British Imperial system, ergo from the British Royal Family. "Inbred system" would be far more accurate.

@rickhapstley3866 5 жыл бұрын

Today, I discovered a man who builds trebuchets in his garden for fun. This is fantastic.

@blizzardstr 4 жыл бұрын

His neighbours aren't that happy

@nissimtrifonov5314 4 жыл бұрын

Well I'd be surprised if I discovered someone who's building these things for something other than fun

@blizzardstr 4 жыл бұрын

Germans may be?

@McRoos 4 жыл бұрын

Exactly my thought, one year later!

@dshanh5494 3 жыл бұрын

@@nissimtrifonov5314 Wanna know something fun?I watch this video for my pathetic engineering project.

@a-drewg1716 4 жыл бұрын

You be talking some mad shit for being someone 300 meters from me.

@furinick 4 жыл бұрын

You talking mad shit for 90km projectile range of 300m

@dinorancher5560 5 жыл бұрын

I am watching this with my dog. She is looking at me like I need to get to work building this superior fetch engine.

@heyhoe168 5 жыл бұрын

feed the poor thing.

@WelcomeToMyDream 5 жыл бұрын

LMAO @ "fetch engine" :)

@user-vp1yr2cv9g 5 жыл бұрын

Go fetch the 90kg projectile over 300m

@jonathanallard2128 5 жыл бұрын

The dog would lose sight of them.

@BillAnt 5 жыл бұрын

Launch the dog..... I bet there has never been a dog fetching a ball that fast... ever! xD

@ryanm.191 6 жыл бұрын

Are you planning and equipping yourself for a crusade? Can I join?

@firebirdaviation5074 6 жыл бұрын

Ryan M. Deus Vult

@peterbuckles2711 6 жыл бұрын

I’m in

@kobesedg23 6 жыл бұрын

we will take Jerusalem my friends

@christiangeiselmann 6 жыл бұрын

I think the idea is to take down those annoying, noisy airplanes that fly over his otherwise beautiful garden.

@zogworth 6 жыл бұрын

I think Tom's crusade may involve Wimbledon rather than Jerusalem

@vincentrobinette1507 5 жыл бұрын

You've got one thing absolutely right. An ideal trebuchet launch would be where the machine came to a complete rest, upon the release of the projectile. That last throw looked like you sent 75% or better of the potential energy of the weight away with the tennis ball. It becomes more tricky, as the weight ratio between the counter weight and the projectile weight becomes greater. That looks like a great design for the World Punkin Chunkin Championship event in Sussex County, in Delaware. If you consider this, note that the pumpkins MUST weigh more than 8 pounds, but less than 10 pounds. (3.63 Kg to 4.54 Kg) The idea is to see who can throw a pumpkin the farthest. Trebuchet is one of the classes of launchers recognized by that event.

@markwalters2287 4 жыл бұрын

Unbelievable that a professional tennis player can serve faster than this.

@57thorns 4 жыл бұрын

Tennis rackets are extremely efficient at sending energy into tennis balls, so effective that tennis rackets are strung "too hard" to improve accuracy over speed and they still achieve these speed. Also consider if you could lift 15 kg 1.5 meters in half a second? I am pretty sure you can, and without hurting yourself. Weight lifters doing snatch achieves speeds of about 2 m/s, so the lift from floor to above head would take about 1.5 seconds but those weight are far more than 15 kg. And if you use your legs, you can probably jump at least one meter into the air, which is a decent amount of energy applied in a very short time.

@mucpougaming6092 4 жыл бұрын

@@57thorns basically,we just need some heavier counter weights.

@dicasdavida2315 4 жыл бұрын

Fala direito porra

@LPHayes-pw1gv 4 жыл бұрын

@@dicasdavida2315 O povo aqui não sabe escrever. Parece que não aprenderam portugês na escola. Nossa educação é um lixo mesmo.

@1AmTheStig 4 жыл бұрын

@@57thorns I see the point you're trying to make but jump 1 meter into the air? Very VERY few people can jump one meter into the air.

@altimking 5 жыл бұрын

nice!! I would like to know.... 1. Do you ever see any of the Tennis Balls again? 2. how far do the Tennis Balls fly? 3. how far would a heavy projectile fly? 4. can you aim for my neighbor next time?

@thedude4795 5 жыл бұрын

u need quick mafs

@MrMilitoso 4 жыл бұрын

You can launch your 90kg tennis balls 300m away

@digdigktn 4 жыл бұрын

this construct doesnt work with heavy weights/projectiles, because you'd have to get those weights on top of this bullshit construct with his bullshit method.

@p529. 4 жыл бұрын

@@digdigktn lol what? Just check the Colossal Thunder trebuchet. They have the same system and can charge it with a pulley

@matthewscarpetti1313 4 жыл бұрын

@@digdigktn I'd like to see you do better. Realy.

@ReviewEdge 6 жыл бұрын

But can it launch a 90 kg projectile over 300 meters?

@lordvalen8133 6 жыл бұрын

Projections Of course, it's the superior siege engine, after all.

@leopold7148 5 жыл бұрын

I was looking for this 😂😂😂

@januzi2 5 жыл бұрын

Damn, Your gf is pretty heavy. Tell her that she should go on a diet or something ;)

@metheguy1232 5 жыл бұрын

It can launch a 95kg projectile over 305 meters

@czd0r 5 жыл бұрын

That is your weight with a parachute, isn't it?

@electromaniac03 6 жыл бұрын

Imagine having to get that ball after every launch

@marcusjoakimsen7078 6 жыл бұрын

Get a dog.

@tin2001 6 жыл бұрын

Marcus Joakimsen Or a bulk discount at your local sports shop 😛

@TomStantonEngineering 6 жыл бұрын

I have a bag of 12 balls, so only have to walk to collect every 12 launches and hope a dog walker hasn't picked them up whilst I'm not watching haha... disclaimer: there is only one guy that walks through that field and I always check before launching ;)

@electromaniac03 6 жыл бұрын

Ay the mad lad himself aswered

@kenhaley4 6 жыл бұрын

Why didn't you just put up a big net to catch the tennis balls? I know it's fun to watch how far they go, but chasing them must get old pretty quick.

@maf3434 4 жыл бұрын

one thing is clear, throwing a grenade with this mechanism is dangerous.

@krusty6649 4 жыл бұрын

na it´s fine. he is doing from a distance relesing with a string. Now talking about cooking that grenade is another story

@d.m.515 4 жыл бұрын

As opposed to throwing a regular grenade, which is perfectly safe....

@ravensquote7206 4 жыл бұрын

-to passing aircraft.

@anwarnaveedali4412 4 жыл бұрын

That's called artillery.

@therealdemen247 4 жыл бұрын

Imagine going on your morning walk when all of the sudden, a super sonic tennis ball comes out of nowhere and clocks you up side the head.

@blizzardstr 4 жыл бұрын

"Oh, these russian spies again..."

@tablett4747 4 жыл бұрын

Sounds like instakill from Tennis. *Wii Sports intensifies*

@LeoFPV 6 жыл бұрын

More optimised than PUBG

@Arheisel 6 жыл бұрын

LeoFPV This will hold true unless the trebuchet clipped into the ground and explode

@vystaz 6 жыл бұрын

everything is more optimised than PUBG

@Reach1335 5 жыл бұрын

Arma 3 isn't sadly.

@MyWaifuNow 5 жыл бұрын

that bar glitched through the ground and fell all the way down

@leocurious9919 5 жыл бұрын

@@Reach1335 Now come on, Arma 3 might not be CPU-optimised but the game itself got fixed after the initial (beta?) release. There are hardly any bugs. They didnt keep "every" problem from Beta to 3 years later with lots of random crashes, cheaters etc.

@USWaterRockets 6 жыл бұрын

Congratulations on 100K Subs!

@TomStantonEngineering 6 жыл бұрын

Thanks mate!

@janriggert 6 жыл бұрын

You earned my subscribe with the "hovering rocket" video. Keep on rockin! :D

@Zplizor 6 жыл бұрын

@Jay R check this guy: kzfaq.info/love/ILl8ozWuxnFYXIe2svjHhg

@GameCyborgCh 4 жыл бұрын

imagine going to an airsoft match and one guy shows up with a trebuchet

@jacquesburger4103 Жыл бұрын

I love coming back to your older videos. Seeing that you only had 100k subs vs your 1m subs now and still having the same kind of content is awesome. Keep being you man.

@meetim2931 6 жыл бұрын

The big question is, where did all the tennis balls go???

@DKTAz00 6 жыл бұрын

Without any drag or ball mass, about 220 meters away, at 104mph and 45 degres, but they probably bounced so.... :P *edit, maybe if you did the math for mass and drag it could go to 300 meters

@TomStantonEngineering 6 жыл бұрын

Tennis balls have a LOT of drag and only land about 80-90m away... a golf ball on the other hand! I tried a golf ball once and it landed 181m away, even after releasing at a really high angle. I'll give it another go once I make a golf ball sized sling!

@billcodey1430 6 жыл бұрын

That sounds like more video content!

@coles8296 6 жыл бұрын

You should try baseballs too.

@rayanyounis4069 6 жыл бұрын

Yeah golf balls fly much further bc of the dimples and turbulent flow! But if dimples reduce drag, why not use them on cars for example? (At least at the back)

@speedrag0n12 6 жыл бұрын

My girlfriend: "honey, why is that 300 kg stone 90 meters away?" Me: "uh no reason"

@plumpstery5199 5 жыл бұрын

Other way around

@karlgiese6100 5 жыл бұрын

It's a 90kg projectile over 300m, you imbecile

@RRKS 5 жыл бұрын

@@karlgiese6100 Not sure if it's a meme, or something random. But you can launch 300 kg 90 meters with the right device, i.e how large the trebuchet is.

@aspielm759 4 жыл бұрын

I still don’t get that reference.

@mamneo2 4 жыл бұрын

I dont get it gg izi

@schz2589 4 жыл бұрын

I just wanted to say thank you for making such a great video for this! I'm doing a ball-launching project in high school and my group is going to use this design now.

@akiramasashi9317 4 жыл бұрын

Me: You can't improve upon perfection. Tom Stanton: Hold my counterweight.

@z4zuse 6 жыл бұрын

Add wheels and mount it on rails. It apparently makes it more efficient

@erik6690 6 жыл бұрын

z4zuse this is true. I tested it as a kid. Less energy is transferred to the rotational energy of the swing arm and more is transferred to the forward kinetic energy of the entire system right before the release. Awesome video!

@user-sw1vr9sn2g 6 жыл бұрын

wheels let the counterweight drop straight down and so you get all the energy without transferring any to the frame and hence the ground. [ added advantage . . . you don't mess with the length of the day (firing E/W) or the seasons (firing N/S) ]

@The1wsx10 6 жыл бұрын

what? that doesn't make sense. each action has an equal and opposite reaction. if there is no normal force, the frame should be moving the other direction.

@jasonyoung7705 5 жыл бұрын

@@The1wsx10 Ive seen this done in other documentaries (years ago), they were firing a trebuchet with the wheels locked and couldnt get decent range, range increases once you let the thing free wheel, since the counter movement of the arm pushed the whole machine forward.

@michaelbuckers 5 жыл бұрын

@@The1wsx10 Notice how the frame rocks violently back and forth. This uses up energy. If you let the pivot slide back and forth freely, no energy is used to rock the frame, improving efficiency. The next best thing is letting the entire frame roll back and forth freely, then energy is still used up to move the entire frame, but it's not immediately dissipated as friction against the ground.

@MatthijsvanDuin 5 жыл бұрын

2:20 Energy is proportional to velocity squared, so your energy transfer efficiency here is only 26%, not 51% If you want to see a _really_ optimized trebuchet, look up the video "Development of a Dynamically Tuned MURLIN Trebuchet"

@dec1137 5 жыл бұрын

Thanks so much for this video. it was a bit tough for an 8 year old cub scout to follow some of the stuff you said, but the video sure helped show a lot for me to follow along. You inspired me to upload video of a whipper trebuchet I built with my dad over the weekend. We use some of your ideas and it worked out well for our 1st little trebuchet project- which I will be using at my cub scout camping trip this weekend. We will be flinging soccer balls!

@NutjobwithaMachete 2 жыл бұрын

I just watched your video. Great job! Made me want to make one too. Thanks for sharing!

@maxcaysey2844 5 жыл бұрын

This trebuchet project is the best! I really hope you plan on doing some more videos on this trebuchet! Its great!!!

@MCsCreations 6 жыл бұрын

Amazing work, dude... Just... Fantastic! 😀 And congrats for the 100k subscribers! Now let's get another 100k! 😊

@CNCKitchen 6 жыл бұрын

Awesome work as always! Congrats on 100k subscribers!

@theheadone 6 жыл бұрын

I'm sure you'll get there as well with your fantastic content :)

@TomStantonEngineering 6 жыл бұрын

Thanks man! You'll be at 100k soon for sure!!

@MightyFineMan Жыл бұрын

After seeing many of your videos over the years, I associate this channel being one of the engineering highlights of the internet.

@whoever6458 Жыл бұрын

And now you're over a million subs! Makes sense considering all the awesome videos! Keep up the good work!

@kustomweb 6 жыл бұрын

Love that whipping sound

@christiaanm1900 6 жыл бұрын

Launch a GoPro!!!!! Pls

@MrRevan991 4 жыл бұрын

go pro and gps unit so it can be recovered

@ULinke 4 жыл бұрын

or a 360 camera!

@casonscarce978 4 жыл бұрын

It's very rare ofind a channel that convinces me to subscribe in just 1 video. Congrats for the milestone and keep up the awesome work!

@aquaholich2051 2 жыл бұрын

Tom, just found this off the back off Tods recent vlogs . Absolute pleasure to watch, something deeply satisfying in Trebuchets and tinkering 👌

@Scooot1972 5 жыл бұрын

If you put wheels on the bottom of the frame on all four corners facing the way the projectile is the wait only has to travel down and not backwards as well. It sounds counter intuitive but it works, most of the energy goes into throwing the projectiles rather than fighting with the frame. The wait goes straight down and the frame rocks back and fourth so less energy is wasted. Please try it and post the results. The ball will go higher, further and travel faster.

@kevinbaboolal4225 4 жыл бұрын

Huh that sounds interesting

@mystic_tacos 4 жыл бұрын

Yes, this makes a lot of sense actually. Besides the transporting of them, cannons had wheels for a similar purpose I believe. It is akin to the recoil effect of guns. If a handgun/rifle/shotgun is not "allowed" to jump back the shot fires the projectile and, to use Scott's word, fights the gun frame. If the frame is allowed to free flow upon firing... Well. lol NOT a very good or scientific comparison there but it does make sense (if you are me I guess lol). In order for energy to perform proficiently, it can't (shouldn't?) be bound.

@bumpercoach 4 жыл бұрын

proved it for my sons science project using a Kinex frame and motor wound up the same for throws 1- base held down 2- base not held and 3- base on wheels... as well as using the slide frames under the C2 rowing erg (and not) for blind power-10s

@joshua43214 4 жыл бұрын

@@mystic_tacos This is all wrong. Field cannon had wheels for moving. The draw tang would be set on the ground to prevent them from rolling under fire. Stationary and ship mounted cannon had wheels so they could be pulled back for reloading. Bullets do not "fight the gun frame." Any motion of the gun reduces the muzzle velocity. A gun will only have recoil damping if it is powerful enough to damage itself when used. Soft gripping a semi-automatic handgun will actually cause it to jamb. handguns and rifles are always gripped as tightly and as rigidly as possible. Artillery will often have recoil damping to protect the frame.

@coachvolpato 4 жыл бұрын

Weight. Not wait.

@umbra1016 6 жыл бұрын

Seeing that tennis ball fly as fast as it did was very satisfying. Great job!

@nuarius 5 жыл бұрын

Channels like this always make me jealous. I absolutely love this kind of stuff, I just do not have the resources required to support it (tools and materials). awesome video! and grats

@flyingark173 4 жыл бұрын

Tom, I doubt you'll see this on such an old video, but I just have to say that I'm newer to your work and looking through old videos and just thought it was great to hear your enthusiasm at having 100k subs now that you have over 350k. You so deserve it, these videos are just awesome!

@rightwingsafetysquad9872 4 жыл бұрын

You need to talk to Joerge Sprave about making this semi-automatic.

@iant419 4 жыл бұрын

Full-auto trebuchet???

@AndreBandarra1 6 жыл бұрын

Huge congrats on the 100k Tom, well deserved! Also, trebuchet powered 100mph tennis ball? what's not to love about that?! :D two thumbs up mate :)

@TomStantonEngineering 6 жыл бұрын

Thanks mate!!

@NINacide 4 жыл бұрын

@@TomStantonEngineering This is VERY important for optimizing a trebuchet: Do you see how the platform rocks during the swing? A trebuchet MUST be on wheels and allowed to roll forwards and backwards, so that from the perspective of the weight, it is falling straight down. A terrible amount of energy is wasted by being transferred to the frame and rocking it. You will DEFINITELY increase your efficiency by putting it on wheels and allowing it to roll forwards and backwards during the throw.

@NINacide 4 жыл бұрын

P.S. Source: "Medieval Siege" by Nova, "Secrets of Lost Empires II"

@Thundermuffin93 Жыл бұрын

Watching this for a second tome four years later and you are now 10x the number of subs, lol. Way to go Tom!

@dabj9546 5 жыл бұрын

Absolutely fantastic video! Really interesting topic and very well executed.

@GunwantBhambra 6 жыл бұрын

Never I have ever waited like this before every week WOW

@iamkian 6 жыл бұрын

Congratulations with you 100K. You are a big inspiration to me. I'm only 10, but hope to do things like you do when I am older. Best regards - Kian 👍

@flagship1701e 6 жыл бұрын

Jesus,? Yeah sure, whatever.

@matthijsreus9656 5 жыл бұрын

I hope you will one day Kian

@merlinklink3872 5 жыл бұрын

When a ten year old has better grammar than you. Haha.

@JohnThomas-wi3dl 4 жыл бұрын

That was just awesome! Loved every second of that vid!

@slowcity9434 2 жыл бұрын

Me and some friends for a school project used this design of a trebuchet and it worked very well. This design went the farthest distance so thanks for the idea.

@jamesgoodwin2450 6 жыл бұрын

If I need to storm a castle you’re my man,great work love it

@danielsmith667 4 жыл бұрын

Adding wheels to your treb also optimses the kinetic energy at the end of the curve

@ethanbarlow1804 5 жыл бұрын

I built a trebuchet for school and came across this video while I was researching and trying to find ideas. My team and I decided to make a whipper and ended up winning a competition with it! Thanks for the vid, Tom!

@MilanKarakas 5 жыл бұрын

Wow, you are now close to 200 k subscribers. Congrats!

@HWPcville 5 жыл бұрын

Nice workmanship. There was an episode of Mythbusters (I believe) a number of years ago where they built & tested a Trebuchet. They put 4 wheels on the legs and that allowed the machine to move forward & back a few feet during launch. I recall it increased the distance of the throw. Thanks for posting.

@brk_can 6 жыл бұрын

Finally! I was worried about you thinking that you shot yourself with the trebuchet :D

@TomStantonEngineering 6 жыл бұрын

Fortunately not haha! Trebuchet rule no1, always stand to the side ;)

@MrClickbang357 5 жыл бұрын

That was a fantastic build and the maths to get there was pretty cool too. In what little study I have done on "regular" trebuchets, there was a theory that putting the whole thing on wheels allowed it to conserve even more energy - kind of letting the whole thing counter-move with the forces lost during the flight. Okay that was a lousy description as it's been quite a while!!! Some food for thought. Congratulations on blowing past 100 mph!!!

@darrinwolf9083 5 жыл бұрын

I love this project - very nice walk thru. I would LOVE to have a CNC router like that!

@bashkillszombies 6 жыл бұрын

I bet this pulls women like crazy.

@heyhoe168 5 жыл бұрын

Powder guns are more effective anyway.

@BillAnt 5 жыл бұрын

Considering he's a pimp with a dozen women under his spell... why yes, it does!! ;D

@belliott538 4 жыл бұрын

Chicks Dig Long Poles... -Some Lonely Fisherman

@azz2 4 жыл бұрын

Hard to say, it's a pull/push sort of mechanism. I guess it's pulls them to begin with then pushes them away as efficiently as possible.

@SineEyed 4 жыл бұрын

Only the young ones..

@nicolasyoung8241 4 жыл бұрын

I just wonder where all the tennis balls are going. I mean imagine waking up from a afternoon nap and 20-30 tennis balls are just in your backyard.

@MouseGoat 4 жыл бұрын

Looks like they going into orbit ┐(￣ヮ￣)┌

@robertgoss4842 4 жыл бұрын

I suggested he turn the tennis balls into flaming projectiles.

@moritzk3004 4 жыл бұрын

We have a project in Physics (school) and every group of 3 sudents has to build a catapult with some restrictions (max weight 250g, max height of the weight, 30cm), and your vid helped me a lot! Thx

@honkynel 3 жыл бұрын

Some lovely photography and problem solving.

@ashscott6068 4 жыл бұрын

Put it on wheels and it will be more efficient. The whole frame will roll forwards just prior to release, as the weight swings backwards

@nddragoon 5 жыл бұрын

you can't optimise a trebuchet, they're already perfect

@pkramer962 5 жыл бұрын

The trebuchet is the superior siege machine after all.

@herrpension1280 5 жыл бұрын

the perfect version called schwerer gustav

@ptirus 5 жыл бұрын

@@herrpension1280yes

@RRKS 5 жыл бұрын

You can optimize any machine that is below 100% efficient. While you can never get 100% due to losses in energy transfer, friction etc.. you can always get that 0.001% closer to 100%. I'm pretty sure that the old engineers trebuchets had higher efficiency than Tom, as they had decades to improve them. However as Tom is doing calculations and using physics, i don't think he's too far behind. And what was it? 60%~ish efficiency. Quite a room for improvement.

@JumalaPlays 5 жыл бұрын

@@RRKS you're the guy thats fun at parties, right?

@odinallmight4481 5 жыл бұрын

8:00 I now understand how this machine fires thank you!

@meusana3681 5 жыл бұрын

Great video man. The concept of a trebuchet is intended to ultimately transfer energy from the counter weight to the target, literally meaning the bigger the trebuchet the more energy you can punch into a wall. A true marvel of historic ingenuity.

@benrae6337 5 жыл бұрын

The attention to detail is crazy, and I loved how well you explained all the physics. Thanks for the video! Just curious, did you use Tracker or some other physics video analysis software to figure out the speeds?

@Kate-Tea 5 жыл бұрын

lmao stop terrorizing the neighbours

@DeathsHood 4 жыл бұрын

He's not terrorizing his neighbors. He's terrorizing his neighbors, neighbors, neighbors, neighbors, neighbors, neighbors, neighbor. They'll never know it's him! The perfect crime!

@blizzardstr 4 жыл бұрын

And where do you think he got these tennis balls from?

@grassblade2 4 жыл бұрын

....and?....what significant idea!.....Fetch a BOX of grenades!

@bill0127 4 жыл бұрын

@@DeathsHood Lol just walkin around one day wondering who smashed my window with a supersonic tennis ball and find a whip it trebuchet 5 blocks down

@FingerAngle 5 жыл бұрын

Hey Tom, I don't think I've ever fully explained how and why I developed the curved hanger system. It was really to accommodate large diameter projectiles in small Whippers, or machines with narrow main axles. A straight, split rail hanger system will work just fine with small projectiles, like golf balls or baseballs, because they can fit between the rails, where softballs or pumpkins will not. I developed the Double Link hanger system first to make space for larger pojos. It worked and performed pretty well, but the configuration reduced the cocking height of the counterweight, reducing the PE. The two counterweight bars in the curved hanger allow me to load large amounts of counterweight and move the center of gravity around, effectively opening or closing the angle between the arm and the hanger without actually adjusting the Timing Prop. A Timing Prop is a mechanical adjusting device between the arm and the hanger. My big full size Whipper did not require the curved hanger because it's so huge that there's space between the hanger rails. Even though it has a mechanical timing prop, location of the CW center of mass was crucial in getting it timed.

@Knex13 5 жыл бұрын

I wish I had done more research when it came to making my trebuchet in highschool, that whipper one is neat.

@alessummer6265 3 жыл бұрын

Hey Tom, just saw the new Colin Furze video and couldn't stop thinking about the fact that you could really give him a hand with his trebuchet, try and contact him!

@themightiestofbooshes9443 4 жыл бұрын

i tried to build a whipper in Medieval Engineers but the technology just isn't there yet...

@DanielButlergungfu1967 5 жыл бұрын

A friend and I years ago made one entirely out of wood. Using a basic drop and also on wheels. That thing was awesome.

@akiwak0382 4 жыл бұрын

Great job! Really enjoyed this.

@JohnSmith-cx8co 5 жыл бұрын

Watching that, and seeing how fast and efficient it was, it’s amazing to think that pro tennis players regularly serve 150mph.

@paulbedichek5177 11 ай бұрын

Was wondering at the improvements, at Winbelton,50 years ago, they reached 130mph. Pretty impressive improvement. How much was the equipment and what percentage too the player?

@johnrubensaragi4125 4 жыл бұрын

2:20 efficiency is not related linearly with speed, since KE=1/2 mV^2

@khomol 4 жыл бұрын

Well done. Looks fun

@alextotheroh8071 4 жыл бұрын

Awesome work. Definitely going to build a trebuchet one day, hopefully it turns out half as good as yours!

@PetesShredder 6 жыл бұрын

I built an air cannon for a BBC tv show years ago that apparently got a tennis ball over mach1, according to a chronograph. Apparently thats not possible, due to choked flow... I keep meaning to re build the canon and try again and measure the speed properly. I built this giant 100mm piston valve that used the air pressure in the storage chamber to open the valve really fast. It was absolutely terrifying, and nearly 4M long. Those were the days....

@crispymemes9114 6 жыл бұрын

... That was your cannon ?

@PetesShredder 6 жыл бұрын

Not sure which one you mean. It won't let me post a link, but if you search on youtube for hoarp001 and find the video 'Monster tennis ball launcher", you will find it. There are other videos of it shooting bars of soap and coke bottles. There is also a video with the chronograph. I was about 18 when I built it, about 12 years ago now. I feel old.

@muzzi5237 6 жыл бұрын

U know BBC has more than 1 meaning

@PetesShredder 6 жыл бұрын

Hmm, well I am pretty sure I was not commissioned to build an air canon for a TV show by a 'Big Black C**k."

@crispymemes9114 6 жыл бұрын

I watched something about that air cannon ( on BBC ) long ago... fucking hell what a small world we live on

@happyhelpfulhoovy 6 жыл бұрын

if the k in the sub number was kilograms, a normal trebuchet would not be able to launch your subcount over 300 metres

@raphrath8561 6 жыл бұрын

kilograms is k the sub count has 100K (capital)

@chikokishi7030 5 жыл бұрын

You are a great inspiration for me. I have many of the same interests as you! My 3d printer is in my kitchen... i need a shop lol. Thanks for the great video

@RaidsEpicly 5 жыл бұрын

That launch sound at 14:09 is amazing! Impressive that you broke 100 mph

@meisenhut31 6 жыл бұрын

Dude, good job on all fronts! Now make it throw a 90kg projectile 300m! Also, nice vacuum nozzle on router, 3D printed? Try making a full shroud that catches chips out the front. I imagine the half shroud makes for better videos though.

@TripleDDDD 6 жыл бұрын

And somewhere is a guy, wondering about all the Tennis balls in his garden :-]

@zetacon4 5 жыл бұрын

Wow! I am impressed! That is one fast tennis ball. Math conquers all. Your mods are fantastic. That is so neat. This shows what one can do if progressive analysis is applied.

@jeffcameron3192 5 жыл бұрын

Hi there, Jeff from New Zealand, like your video, going to binge watch the rest now.

@AndrewWolboldt 4 жыл бұрын

what about putting the whole thing on wheels? instead of the whole frame rocking it will roll forward and the weights will drop straighter down.

@57thorns 4 жыл бұрын

You lose energy accelerating the frame.

@madzak9847 5 жыл бұрын

Now you can bombard your neighbours with Molotov cocktails)

@thefoodguycooking Жыл бұрын

Diffinantly gonna be using some of your ideas for my projectile launcher school project

@mullinstech 3 жыл бұрын

excellent work!!

@locouk 6 жыл бұрын

👍😎👍 X 100,000!!!!!!!!!!!

@mangus8759 5 жыл бұрын

104 mph in 0.5 sec!? DAAAAYYYYUUMM!!!!!!

@348frank348 5 жыл бұрын

tesla roadster will be faster

@jaimedelosrios2977 Жыл бұрын

Thank you for keeping this video active. I think the expression for the kinetic energy needs V squared. Ke = 0.5 mass x velocity ^ 2. Velocity equation is incongruent otherwise.

@whataboutbob7967 4 жыл бұрын

Nice tune up !

@NeverthePanda 5 жыл бұрын

some dog somewhere back there now has a lot of toys

@laytonpratt 5 жыл бұрын

Panda Magnum or is dead

@Henchman1977 6 жыл бұрын

WHEELS!

@OGSinisterPotato 4 жыл бұрын

Thanks for the tips. I'll be sure to add them to my trebuchet blueprints before my next major conquest (:

@TheWizardGamez 3 жыл бұрын

I like how the wood cutter table has a ton of marks in it. Proof that its been used

@JohnHeska Жыл бұрын

Hey Tom, I have a new passion for trebuchets. Being new at this hobby, I was wondering if you offer any plans or drawings with dimensions for your whipper trebuchet for sale?

@aserta 6 жыл бұрын

That motor is entirely far too down, you have to minimize flexing in a CNC, not increase it.

@LEFTYSMOKER 5 жыл бұрын

yeah i think the same

@jolioding_2253 5 жыл бұрын

if it works it can't be dumb

@TonyKuzmin 5 жыл бұрын

great project!

@BazColne 4 жыл бұрын

Thank you for your heroic efforts.

@bluedeath996 6 жыл бұрын

Just think, the players at Wimbledon at the moment can serve faster than you trebuchet can throw the ball.

@yonidellarocha9714 5 жыл бұрын

Yes, but lets see how a tennis player manages several 10kg rocks... I mean, i think the idea here is to make a scalable design, so that you can increase the projectile and counterweight, while keeping their proportion, and launch serious wheight. It would also be nice to have a destruction test, to see how much weight it can move before it cracks. Then you make a bigger, stronger version...

@VillainInGlasses 6 жыл бұрын

try throwing a plain in it, and see if it gets destroyed by the G-force or glide through the air in a tremendous speed

@gth042 6 жыл бұрын

My guess is that a glider or water filled 3d printed rocket were high on his long list of projectiles (along with a gopro and the cat). The rope and release doodad required to keep things aligned are probably a whole project in itself. Thank you for sharing this stuff, Tom!

@Caronte4116 5 жыл бұрын

How did I end in here? And why did I like this video so much? Ton of memories about Age of Empires II, of course :D great job! Good device to play with your dog