Boomerang Launcher

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  • Опубліковано 13 вер 2018
  • Is it possible to make a catapult that can launch a boomerang that'll always come back?
    For some reason I've always wanted to try this, and now I've found out that ideas aren't always as easy as they may seem!
    3D Printer filament sponsored by 3D Printz UK: 3dprintz.co.uk/
    Enjoy my videos? Want to see more? I upload bonus footage/extra information to my Patreon page: / tomstanton
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  • Наука та технологія

КОМЕНТАРІ • 765

  • @rafasilva8666
    @rafasilva8666 5 років тому +432

    **pull trigger string**
    **launcher clunking sound**
    **tom makes funny sound**
    Now that was consistent

  • @drvanon
    @drvanon 5 років тому +111

    Tom Stanton and Real Engineering less then an hour apart? Today is my lucky day!

  • @zogworth
    @zogworth 5 років тому +993

    Can't believe you've betrayed the trebuchet master race

    • @Phirdude40k
      @Phirdude40k 5 років тому +174

      to be fair, he is attempting to create a catapult thats only purpose is to destroy itself.

    • @Project_VideoGame
      @Project_VideoGame 4 роки тому +14

      @@Phirdude40k so a more useless catapult?
      Useless, swithces itself off
      More useless, destroys itself
      Most useless, destroys itself and the surroundings

    • @Project_VideoGame
      @Project_VideoGame 4 роки тому +18

      A nuke can be called... "so its a most useless machine?"

    • @oneparticularlysmartape
      @oneparticularlysmartape 4 роки тому +7

      @@Phirdude40k
      Quite a clever little plan if you ask me.

    • @davidegaruti2582
      @davidegaruti2582 4 роки тому +9

      @@Project_VideoGame well not if you want to make a bomb :
      A bomb that doesn't destroy itself is more useless
      A bomb that doesn't destry it's surrounding it's most useless

  • @USWaterRockets
    @USWaterRockets 5 років тому +376

    The next phase of this project is to put some servos and instrumentation on the boomerang so that it will be able to control its own flight path and steer itself home. ;-) Also, the long form videos are a nice change. The extra touches done in editing are cool.

    • @TomStantonEngineering
      @TomStantonEngineering  5 років тому +50

      Haha 21st century boomerang ;-) Great thanks mate!

    • @brantwedel
      @brantwedel 5 років тому +4

      I was about to type this identical comment, then saw this one below ... I need to become a patreon :D

    • @charleslambert3368
      @charleslambert3368 5 років тому +3

      I wonder whether you could do it using a single servo. Like how a monospinner can move in 3d space with only 1 propellor.

    • @sUASNews
      @sUASNews 5 років тому +3

      @@charleslambert3368 These already exist! Can't remember who made the first one but Lockheed Martin followed up on it.

    • @koitk
      @koitk 5 років тому

      Before you try to control it maybe try to grasb the aerodynamics of it and what would you need to control, its not as easy as it might seem. ua-cam.com/video/T7LAnT2r_vo/v-deo.html

  • @jackhubbard4234
    @jackhubbard4234 5 років тому +8

    Love how you have CNC and a 3D printer but use 2 wicker garden chairs as a sawhorse 😂 Another entertaining and intersting video as always Tom!

  • @ThatcraniumguyNet
    @ThatcraniumguyNet 5 років тому +41

    I recommend 3D printing a vacuum attachment for your CNC router. Instead of chasing the bit around with the vacuum, you'd just have to flip a switch.

  • @GaryLittlemore
    @GaryLittlemore 5 років тому +27

    Great video Tom.
    One difference I was noticing between you throwing of the boomerang and the machine launcher was that you was stood throwing the boomerang and the launcher was sat on the floor meaning the launch had the height already when yourself was throwing it.

  • @Blacksmith-Joe
    @Blacksmith-Joe 5 років тому +129

    Brilliant stuff!
    I'm a blacksmith/metal worker, if you wanna do something metal based collaboration let me know! I build and fly foam planes but nothing fancy, also Hertfordshire based.
    Cheers,
    Joe.

    • @Sharpless2
      @Sharpless2 5 років тому +1

      @dogboy1953 i wonder if that would actually work if the metal used was light enough...

    • @Shuroii
      @Shuroii 4 роки тому +3

      @@Sharpless2 it doesn't matter what material is used for as long as it is light enough

    • @timehunter9467
      @timehunter9467 4 роки тому

      Hmm, a magnesium boomerang? That’d be light and deadly...

    • @duke-vx8xy
      @duke-vx8xy 4 роки тому +1

      Should I put this in r/cursed comments?😀🔪

    • @taziyahw3432
      @taziyahw3432 4 роки тому

      @@duke-vx8xy yesh

  •  4 роки тому +119

    no one:
    british people: "I need a cup of tea."

  • @AmusementLabs
    @AmusementLabs 4 роки тому +9

    "this is the one, I can feel it." **Throws it straight into the ground**

  • @junuhunuproductions
    @junuhunuproductions 5 років тому +11

    Cool explanation on 'gyroscopic-procession' and why Boomerang curves. Didn't know that!

  • @RamyRC
    @RamyRC 5 років тому +111

    that's a fun project :D

    • @kono12345
      @kono12345 3 роки тому +2

      g

    • @redyau_
      @redyau_ 3 роки тому

      No its not honestly :D

    • @skippy6875
      @skippy6875 3 роки тому

      That sums up all of his projects!

  • @s2s_parrotfan236
    @s2s_parrotfan236 5 років тому +10

    Hi Tom.... Thanks for making me SMILE! Truly a wonderful effort and outcome. Plus, after all that 'lounging' on the electric bike, you got in some exercise! FWIW, I'll be watching this again with my 8 year old grandson. He's at that stage where he's wondering how -and why- things work the way they do. You should know that you're a good influence on today's upcoming youth! Thanks again.

    • @TomStantonEngineering
      @TomStantonEngineering  5 років тому +2

      Glad to entertain you and hopefully be of influence to your grandson!! Thanks!

  • @Muush
    @Muush 5 років тому +46

    I swear I mentioned in a previous video that you should make a boomerang launcher or use the trebuchet to launch a boomerang

    • @TomStantonEngineering
      @TomStantonEngineering  5 років тому +19

      Ah yes, I believe it was mentioned on one of my trebuchet videos! Thanks for the suggestion!

  • @jamieh6084
    @jamieh6084 5 років тому +265

    But the catapult is so inferior to the trebuchet...

    • @jhulten
      @jhulten 5 років тому +10

      No need. It isn't a 90 kg boomerang...

    • @TTurrikka
      @TTurrikka 5 років тому +4

      Why not?

    • @JohanBloemberg
      @JohanBloemberg 5 років тому +8

      And he doesn't want to launch it 300m but 0m...

    • @parajacks4
      @parajacks4 5 років тому

      A trebuchet could work. It’s lever wound need to be strong enough to impact something at near vertical.

    • @BenODen
      @BenODen 3 роки тому +2

      It is totally easier to scale up to rediculous sized boomerang with trebuchet. No motor drone for quick recon, anyone?

  • @MCsCreations
    @MCsCreations 5 років тому +23

    Great project, dude. Considering all the variables, some I just thought about and you didn't even listed... That's pretty darn good result!

  • @TheCebulon
    @TheCebulon 5 років тому +18

    Great video!
    Next time put some contrast colour at the bumerang so they can be seen better on video. Would be great. Like with the trebuchet projectiles.

  • @DasGav
    @DasGav 4 роки тому +2

    I love how you go from a fancy "Laser guided" CNC machine to 2 outdoor chairs for woodworking. Now I can relate to that type of woodworking haha

  • @solace6717
    @solace6717 5 років тому +2

    Who said only idiots repeat the same thing over and over expecting different results, they were never introduced to an automatic boomerang launcher! Love your channel!

  • @csours
    @csours 5 років тому +91

    Now where did I put my boomerang, Tom thought... Suddenly, it came to him!

  • @TheHarberHangar
    @TheHarberHangar 5 років тому +3

    I love your elegant and simple release concept. Very nice! You definitely could have just tried a few (hundred) more times and got one throw to hit the launcher, then just showed THAT one, but I LOVE that you show the whole process, and how you worked through it, and (probably) most of your attempts. Definitely NOT a failure, BECAUSE YOU LEARNED FROM IT.
    Way to go!

  • @Gunnahan
    @Gunnahan 5 років тому +22

    as far as i know boomerangs actually need the wind to really come back to the thrower.. and maybe your catapult is just a little low? after all humans throw the boomerangs from shoulderheight.. and a little downwards too.. so they have more clearance before they would hit the ground.. interesting project, though! :-)

    • @snuskenmaxi
      @snuskenmaxi 5 років тому +7

      Most boomerang only need a little bit of wind. Most of my boomerangs fly much better with no wind at all.

    • @themonkeymoo
      @themonkeymoo 4 роки тому +3

      No; no wind is necessary. It's entirely due to the aerodynamic and gyroscopic properties of a properly built and thrown boomerang.

    • @patrickstrasser-mikhail6873
      @patrickstrasser-mikhail6873 4 роки тому +1

      I often had boometangs comming in ver flat , below the elevation of throwing. Funnily it's quite obvious, but Tom had 16 variables he would identify instead. Would like to see a sinhle launch from an eye height.

  • @VictorPoulin
    @VictorPoulin 4 роки тому +1

    I do believe i have a proper boomerang for ya. Love the invention my friend. Wish you were my neighbor, i could at least hold the camera for ya lol. Every time it made a full circle and landed in front of you i would still call it a win. The launcher did it's job. That boomerang needed a little bit of breeze to push it back just a bit. I don't think hitting the ground made it fly any different, i think it was simply the change in wind direction. This test would have gone so much better in a huge arena with dead air. I know, not practical or feasible. I've thrown 1000's of times and i only go out first thing in the morning or just before dark when the breeze is at it's lightest.

  • @ajuc005
    @ajuc005 5 років тому +11

    Great video :)
    Please if you feel the need to - do talk about airfoils for ages. I'd watch that.

  • @gunar.kroeger
    @gunar.kroeger 5 років тому +10

    you can also add a coin on the tip of the boomerang so it spins longer. I had to do that to my 3d printed boomerang

  • @RyeOnHam
    @RyeOnHam 5 років тому +16

    CNC router for flats, two wicker chairs and a hand saw for dimensional. Best of both worlds.

    • @redsquirrelftw
      @redsquirrelftw 5 років тому +6

      I thought that was funny. "He has a CNC machine, but not a mitre saw?" :P

    • @RyeOnHam
      @RyeOnHam 5 років тому +1

      #Priorities.

  • @ScottiStudios
    @ScottiStudios 3 роки тому +7

    6:30 "about six and a half minutes into this video..." that was either a good guess, or well edited 🤔😋

  • @RodrigoVzq
    @RodrigoVzq 5 років тому +2

    I like that the engineer is happy when something is consistent

  • @pingu99991
    @pingu99991 5 років тому +8

    The first two and a half minutes of this is tom playing lonely catch

    • @snuskenmaxi
      @snuskenmaxi 5 років тому

      Throwing boomerangs can be a team sport as well, though

  • @NateBury
    @NateBury 5 років тому +4

    Sweet vid it was like watching Mike Boyd meets Smarter Everyday meets Tom Stanton!

  • @Samrushtonblight
    @Samrushtonblight 5 років тому

    Well done. As a long time boomerang thrower and erstwhile manufacturer (Rangs Boomerangs Australia) I commend your inventiveness and persistence. The release method approaches actual genius. I'll be sharing this presentation with my boomerang buddies.

  • @DUCKDUDE4100
    @DUCKDUDE4100 4 роки тому +2

    I was sat here almost shouting at my TV "NAIL THE BLOODY LEGS ON!" lol. It'd certainly help your consistency.

  • @lescarneiro
    @lescarneiro 5 років тому

    Nice video! Long format FTW! Worth mentioning that it's very important that you show the failures, that is the most teaching part! The successful part of your videos are more for our, and most probably yours, enjoyment, but the teaching part is on the failures and your workarounds! Love your videos!

  • @Hunar1997
    @Hunar1997 4 роки тому +1

    Finally, your explanation was better than any other (how boomerang works) search result I got

  • @JustKevVideoStorage
    @JustKevVideoStorage 4 роки тому

    I throw boomerangs for sport and collecting, and I'm amazed that you made this work. I had my doubts, but by god, even my hobby will be taken over by robots. Excellent job!

  • @abramthiessen8749
    @abramthiessen8749 5 років тому

    I have so much new respect for Sokka. His boomerang always came back. And that must've taken lots of fictional skill.

  • @britttullos8119
    @britttullos8119 2 роки тому

    Awesome Video! Awesome Build!
    I too have thought about possible designs for a boomerang thrower. You did great. That cup of tea after all of those throws gave me a good laugh

  • @HB-jf6yq
    @HB-jf6yq 5 років тому

    Tom, if it means making a whole new sequel to every video you make of you talking about the physics and maths behind the video project, then so be it. I'm sure many people would appreciate it. I sure know I would...

  • @MrArcher0
    @MrArcher0 5 років тому +2

    If it circles behind you more out of wind to the right of wind. Circles in front of you too much out of the wind. Aim more left.

  • @warpman74
    @warpman74 5 років тому +1

    Well that's an A+ for persistence!
    Great video!!

  • @nielshassler7553
    @nielshassler7553 5 років тому

    Tank you for teaching physic this way .
    It is fun to watch and you learn something .
    Greetings from Germany .

  • @davidf2281
    @davidf2281 5 років тому

    Not a failure. Those shots of the boomerang describing lazy, gravity-defying curves are just beautiful.

  • @NocturnalRS
    @NocturnalRS 4 роки тому +1

    I was thinking that your axle could of been a retractable pin powered by an actuator, however ever your solution is even better!

  • @garyha2650
    @garyha2650 3 роки тому

    It's harder to design something simple than complex, I love that notion

  • @adrianchupp
    @adrianchupp 5 років тому

    I admire your perseverance and I love the work you put into editing! The catapult-timed-to-music bit was cool!

  • @klungelair
    @klungelair 5 років тому +1

    Love the idea. But the boomerang can swing a little bit on the hook so that the angle of attack can be different every time.
    Maybe place a board (or 2 boards) nex to the boomerang so it will stay in the same plane every lanch

  • @kevinberry5793
    @kevinberry5793 5 років тому

    Great job Tom. I love your persistence and thorough explanation of your thought process. Keep it up. Cheers from the U.S.

  • @burlyheads
    @burlyheads 3 роки тому

    You're the only person I wholly respect using a bosch mini drill

  • @jurjenbos228
    @jurjenbos228 4 роки тому

    Best explanation on how a boomerang works ever. Good work!

  • @peper0ny.r1p
    @peper0ny.r1p 5 років тому

    That effort for this little experiment is very impressive. Great video. Thank you.

  • @user-pw5do6tu7i
    @user-pw5do6tu7i 3 роки тому

    We have to appreciate that he stood up, walked to the boomerang, picked it up, walked back, put it in, make sure the camera is set, sit down, lunch x 89 times. Thats a lot!!

  • @crenn6977
    @crenn6977 5 років тому +1

    Love this format, and as an Australian, love this project even more!

  • @SeoDeadeHenn
    @SeoDeadeHenn 3 роки тому +2

    "I've built these things to see if I can get them to work..." -every engineer ever

  • @kustomweb
    @kustomweb 5 років тому

    This kid's joy is infectious. Go Tom go, love from LA.

  • @GeddyRC
    @GeddyRC 3 роки тому

    Your excitement when you caught it for the first time made me want to go out and buy a boomerang right now

  • @2S74
    @2S74 2 роки тому

    As a boomerang thrower I appreciate your job. What a very fun project , congratulations !!!

  • @gryfandjane
    @gryfandjane 5 років тому

    Fascinating as always! Thanks for another excellent episode.

  • @reubenstephenjohn5474
    @reubenstephenjohn5474 5 років тому

    Tom Stanton,the man that simplifies !! Totally love this video even though it failed

  • @janethefromstatedog7269
    @janethefromstatedog7269 4 роки тому +1

    I never know what you’re talking about but I can’t stop watching

  • @erik365365365
    @erik365365365 3 роки тому

    UA-cam recommendations got it right and gave me this vid today! Amazing! Didn’t know how a boomerang worked!

  • @Gkitchens1
    @Gkitchens1 3 роки тому

    I love a simple solution to an issue. My first thought was a timed release mechanism using an actuated axle or something but I think it would be very difficult to time it. Your solution guarantees it releases with the right pivot. Brilliant

  • @EthanPerales.
    @EthanPerales. 5 років тому

    I like what you did with syncing the snaps in the song with the catapult hitting the tape stopper

  • @comma1981
    @comma1981 5 років тому

    Your explanation of boomerang is great!
    I love you Engineering + making combo

  • @lukeslab3502
    @lukeslab3502 4 роки тому +5

    “That was like...... I need a cup of tea!”
    Well, it’s confirmed.... Tom is NOT from Louisianna.

  • @cwj138
    @cwj138 5 років тому

    I think sometimes you get so focused on your goals you don't realise how amazing what you have achieved is.

  • @raykent3211
    @raykent3211 5 років тому +3

    Tom: how about a magnus effect aircraft? Might be your cup of tea.

  • @kraftistbumerang
    @kraftistbumerang 4 роки тому +1

    [circular(spin)/ lineer velocity] ratio is also important. if you would make that hole closer to the elbow(center), more kinetic energy would go to circular and less to lineer motion. That something you could try. That boomerang you can throw it with the lift arm, dingle arm or even elbow. And elbow you can make more spin.

  • @CaptainPeterRMiller
    @CaptainPeterRMiller 5 років тому

    Excellent. The pursuit of knowledge.

  • @mgiesens
    @mgiesens 5 років тому

    Hi Tom, I'm a boomerang-thrower myself (member of the German National Team) and I'm pretty impressed with your construction of a boomerang-launcher. But I'm also happy to see that you like to throw and catch boomerangs without any mechanical construction. Do you know that there is a British Boomerang society, which organizes tournaments and building-workshops. They also have throwers that like to experiment with boomerangs as well (and build a vertical wind-tunnel for example). Look the British Boomerang Society up on the Internet. I'm hoping to see you soon on a boomerang-tournament to exchange some crazy ideas about boomerangs with you ;)

  • @PaulLockwood
    @PaulLockwood 5 років тому

    That was a really interesting project. It would be nice to hear about the design and options of the boomerang itself.
    Great job and well done!

  • @Uri1000x1
    @Uri1000x1 3 роки тому

    The go-to tuning I see members of U.S. Boomerang Association (USBA) doing is taping a coin-size weight to the wing-tips. Sometimes amateurs use an airfoil that makes too much lift. I like when a light Boom spin slows down at the end and hoovers down for capture.

  • @gikar1948
    @gikar1948 5 років тому

    Thanks Tom, great video.

  • @AndrewShaidurov
    @AndrewShaidurov 5 років тому

    This new format is awesome!

  • @flymachine
    @flymachine 2 роки тому

    Nice to see the A350 on approach and the climbing bird in the sky in your second throw shot, I really miss the time in my life when I could spend days building something completely useless just to see if I could, good on ya.

  • @GrandadIsAnOldMan
    @GrandadIsAnOldMan 5 років тому

    Brilliant project and video

  • @davewelch151
    @davewelch151 Рік тому

    I did a lot with boomerangs 50 years ago, great fun. I always pushed the daylight a bit too much, and then the game became dangerous! I am really enjoying your experiments, and I find I have touched on quite a few of the subjects which just makes it all more interesting. Keep it up :)

  • @fuba44
    @fuba44 5 років тому

    Liked this format allot.

  • @marian-gabriel9518
    @marian-gabriel9518 5 років тому +1

    Good job so far...but for one...make that thing stable not rocking when you launch. Second, make the arm just a bit longer and third, the stopping blade stalls as it slows down and generates drag which makes the other wing come up and around by means of inertia of the second blade which you should balance angainst the drag by making the tips of the blades a little heavier in your case (it just seemed that your boomerang was not spinning as fast as it should). I think you can see what I'm pointing at.
    Ps. It will give more stability and a longer flight time, though it will also influence the shape of the flight.

  • @premabisht1117
    @premabisht1117 2 роки тому +1

    I appreciate your hard work bro.
    Keep going, best of luck

  • @snorman1951
    @snorman1951 3 роки тому

    Some suggestions after reading the comments: Put the launcher on an elevated platform and when proper release angles are established, fix it securely. Play with the location of the pivot pin to achieve faster rotation if possible. Use a ready-made plastic boomerang. There are a few decent two-blade plastic booms made. Lastly read up on tuning boomerangs for better flights. The light plastic ones respond very well to tuning although they won't hold it for long. I have no doubt that it is doable.

  • @alansturgess1324
    @alansturgess1324 5 років тому

    I can just about build a paper plane but your various and imaginative experiments are compulsive to watch. You must have one hell of a lot of spare time.

  • @emaglott
    @emaglott 5 років тому

    your diligence is impressive.

  • @slippingsloth
    @slippingsloth 5 років тому

    Awesome project, keep up the great projects. I am just loving the fact u hit the power lines twice. I can see it on local news now. Local engineer launches boomerang into power lines with home made catapult, community loses power.....lol

  • @MrFadjule
    @MrFadjule 5 років тому

    Dude thanks for the quick breakdown of gyroscopic precession!!

  • @kendesign3622
    @kendesign3622 5 років тому +1

    If you rigidity mount your catapult you should get consistent results. If you make that mount adjustable you can fine tune. I always like your videos keep up the great work!

  • @candle_eatist
    @candle_eatist 4 роки тому

    nice informative vid Tom

  • @kf7tkj
    @kf7tkj 5 років тому

    I do like the longer all in one video projects!

  • @theaussiedrama3422
    @theaussiedrama3422 5 років тому

    absolutely enjoyed this video.. big thumbs up brother

  • @EvoinOZ
    @EvoinOZ 5 років тому +1

    When I was a kid growing up in Australia in the 70s there were a lot of good boomerang throwers around. It was a bit of a thing back then to practice - I guess it was our version of frisbee. I was pretty good at it myself.
    I reckon one of the problems with your machine launcher is that it is too close to the ground. When you throw a boomerang you are throwing it from about 6ft high and you launch it in a bit of a downward motion; the aerodynamic lift then kcks in and makes a better arc. Maybe you could lift your machine up off the ground and get it to release a little later.

  • @samuelgunnarsson1983
    @samuelgunnarsson1983 5 років тому

    I love how the clouds walk forward under the launch sequences ;)

  • @Mottersmotters
    @Mottersmotters 5 років тому +1

    Lol brilliant Video Tom 👍😆

  • @XEXTRiZ
    @XEXTRiZ 5 років тому

    I would love to hear an entire video about the fancy shape of your homemade boomerang and the airfoil!

  • @TheActionBastard
    @TheActionBastard 5 років тому

    Trebuchet. Boomerang. Fuse together. Hospitalize self for glorious footage. I vote for this plan (hell I'd do it... I've done dumber things for worse reasons).

  • @christophermann802
    @christophermann802 5 років тому

    Hey Tom! Great work as always. The fact that you achieved a couple of launches that ended up within the 2 mtr catch zone is really good.
    Please consider that you are not imparting a twist upon release as you would with a human wrist launch. With the catapult it is quite linear.

  • @parajacks4
    @parajacks4 5 років тому +1

    I’m very impressed with your release method.
    The biggest advance for you would be a base to hold the catapult at a steady angle.
    If the release is consistent then the next variable is variations in wind and turbulence.
    Look for a bigger field, with nothing up wind of you to ensure clean laminar air flow. Those trees in the picture would have given turbulence. The smaller the flying object and slower the air speed then the more it will feel and be effected by, the turbulence. Of cause some windy days are more gusty than others too.

    • @denbecr49
      @denbecr49 5 років тому

      Excellent observation. My lifelong kite obsession taught me how disruptive distant upwind obstacles can be to getting a kite to launch.
      Another unnecessary variable I see is the ground level launch. There is an abrupt gradient of windspeed from near zero at ground level. You can see it by blowing bubbles at various heights in various strength winds, preferably in wide open spaces. Watching the relatively slow progress of dried dead leaves along the ground is evidence as well.

  • @Eddioj
    @Eddioj 5 років тому +1

    The plane going across the sky after 1 min looked like CGI haha

  • @IteKLF
    @IteKLF 5 років тому

    Followed for a long time. You are getting VERY good at this! (both video and engineering). Best Regards, fellow engineer.

  • @kurumi394
    @kurumi394 4 роки тому

    As a uni aerospace engineering student your videos are fascinating

  • @JasonEllingsworth
    @JasonEllingsworth 3 роки тому

    when i used to throw one when i was little, I would be about 100 feet back in my yard and chuck it directly at the right corner of the house. It would lift before hitting the house, go left, and come right back to me every time. It was probably heavier than that one, and was a true boomerang shape. Now even though I could bring it right back, it was painful to catch! Also I'll note that the secret to a proper consistent boomerang through is a hard flick of the wrist, so it is no surprise you had issues with the catapult. You need the rotational force to be enough to carry the thing back to you

  • @live2dream1966
    @live2dream1966 5 років тому

    Sit down, get up, chase the boomerang. Sit down, get up, chase the boomerang. This sounds like a great workout tool.