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Building a Trebuchet

Discussion in 'Off-Topic Discussion' started by tacomaprerunner, Apr 19, 2010.

  1. Apr 19, 2010 at 2:18 PM
    #1
    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    UPDATED VIDEO ON POST 38


    A bunch of friends and I started a club at school called SETAS (Society for Engineering Technology and Applied Sciences), and for our first major project, decided to build a trebuchet. Here's some pictures of the build so far.

    Feel free to give any suggestions. We plan to have it finished within this coming month.



    Here's the first side, with plywood gussets.
    [​IMG]

    [​IMG]

    First side up
    [​IMG]

    Installing second side
    [​IMG]

    Friend standing between assembled sides for size comparison.
    [​IMG]

    An inch too tall to fit in the garage
    [​IMG]

    Size comparison in relation to my truck
    [​IMG]
     
  2. Apr 19, 2010 at 2:24 PM
    #2
    solus

    solus HOME!!!

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  3. Apr 19, 2010 at 2:24 PM
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    thebigk

    thebigk 6 Double 5 3 2 1

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  4. Apr 19, 2010 at 2:24 PM
    #4
    tomonian77

    tomonian77 Well-Known Member

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    This would be a catapult, for the intellectually challenged. Keep the pics coming, looks good.
     
  5. Apr 19, 2010 at 2:25 PM
    #5
    steve o 77

    steve o 77 braaap

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    :popcorn: awesome.
     
  6. Apr 19, 2010 at 2:26 PM
    #6
    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    It will be a trebuchet in the end. A trebuchet uses counterweight, while a catapult uses tension
     
  7. Apr 19, 2010 at 2:29 PM
    #7
    dysfunctnlretard

    dysfunctnlretard Hi

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    Thank you guys for the clarification. My dumb ass was about to ask wtf a trebuchet was. You learn something new everyday.
     
  8. Apr 19, 2010 at 2:32 PM
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    Gr8WhiteTaco

    Gr8WhiteTaco bishes love my haircut

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    Thats exactly what i was thinking!! which made me think of this
    http://www.youtube.com/watch?v=JK8byQsugFw
    just replace the bike and ramp with a trebuchet and projectile
     
  9. Apr 19, 2010 at 4:40 PM
    #9
    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    I can get it for ya. With the TW discount, you can have it for $90. I'll cover shipping.
     
  10. Apr 20, 2010 at 10:11 AM
    #10
    bigburrito

    bigburrito Local Man

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  11. Apr 20, 2010 at 10:30 AM
    #11
    theinjected1

    theinjected1 Well-Known Member

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    Up in the air, big a$$ tires.
    I have made a few in the past, but nothing that big..... yet. What do you plan on using for a trigger?

    Also, plan on getting a small electric winch to help cock that thing. Gonna take a lot of weight!
     
  12. Apr 20, 2010 at 10:38 AM
    #12
    Loudpedal

    Loudpedal Mind = Blown

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    We built five of these as a "team building exercise" at our last corporate retreat. Smaller scale but we were able to have teams and shoot at each other. I'll see if I can dig up pics. Best part, at the end they drew names and I scored one. I haven't reassembled it more out of concern for my neighbors' safety than anything else.
     
  13. Apr 20, 2010 at 11:37 AM
    #13
    Loudpedal

    Loudpedal Mind = Blown

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    [​IMG]

    I'm the guy in the middle.
     
  14. Apr 20, 2010 at 11:49 AM
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    kinetik873

    kinetik873 Well-Known Member

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    Awesome! we built one at my old unit and launched pumpkins with grenade sims in them....epic.
     
  15. Apr 20, 2010 at 3:53 PM
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    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    About that trigger- probably a set up of two or three eye screws, where one is mounted to the arm and the other is on an extension/in the ground. The arm will be lowered to where the 'eyes' line up, and a pin will be placed through. Then it simply needs to be pulled, from a safe distance.

    And the winch - we haven't quite figured that out yet. That's a good idea though. Unfortunately we're on a pretty tight budget. We got all of the lumber donated to us, which was an awesome gesture from the company. We'll probably end up having all of us pull on a rope simultaneously. If that doesn't work, we'll use my truck.
     
  16. Apr 20, 2010 at 3:55 PM
    #16
    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    Looks good man. How much counterweight? How heavy was the projectile? Distance travelled?
     
  17. Apr 20, 2010 at 3:58 PM
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    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    Haha that's great. How far did they go?
     
  18. May 4, 2010 at 7:56 PM
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    tacomaprerunner

    tacomaprerunner [OP] Dang liberals.

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    Here's some updated pictures of the progress so far. This is where the arm will be (approximately)

    [​IMG]

    [​IMG]
     
  19. May 4, 2010 at 8:23 PM
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    ForeRunner

    ForeRunner Scotch before noon. Moderator

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    I made a desktop one that launches ping pong balls (or grapes if I don't like you) around the office.

    Next on the list is an Onager!
     
  20. May 5, 2010 at 7:16 AM
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    Loudpedal

    Loudpedal Mind = Blown

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    IIRC it was 25lbs??? I think it was two 10s and a 5 weight. we were launching softballs over 100 yards when they would actually go. We could adjust fulcrum location and the way the slings released. we got every thing from 326 ft to damn near straight up and down. I need to get in my garage and dig out the parts. Try and get you a trigger pic, too.
     
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