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Building a cannon

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  • J Offline
    Julius
    last edited by 21 Jan 2008, 14:33

    So, i'm trying to build a cannon. now it rotates with a servo joint. i wonder if it's possible to throw out the ball with a piston joint after the cannon is rotated.

    Thank you in advance.


    Cannon.skp

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    • C Offline
      CPhillips
      last edited by 21 Jan 2008, 20:03

      @julius said:

      So, i'm trying to build a cannon. now it rotates with a servo joint. i wonder if it's possible to throw out the ball with a piston joint after the cannon is rotated.

      Thank you in advance.

      A piston would certainly push the ball out. I don't know how you would trigger it tho. Maybe a hidden object that will hold it in until its in the right position.

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      • J Offline
        Julius
        last edited by 21 Jan 2008, 20:09

        so, basically, i cannot make the piston joint rotate along with the cannon and fire when i want...

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        • C Offline
          CPhillips
          last edited by 21 Jan 2008, 22:05

          @julius said:

          so, basically, i cannot make the piston joint rotate along with the cannon and fire when i want...

          The piston will rotate with the cannon. But it will fling the cannon ball as soon as you play the simulation.


          Cannon-2.skp

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          • J Offline
            Julius
            last edited by 22 Jan 2008, 16:45

            thank you so much! i finally got what i wanted!

            can i ask you one more thing? is it possible to make the cannon rotate on the blue axis with a wheel+servo joint?


            Cannon.skp

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            • R Offline
              remus
              last edited by 22 Jan 2008, 18:08

              im not a sketchy physics user, but cant you rotate the modle to one side, apply the joint and then rotate it back? i just saw it on a vid, so mght well be wrong.

              http://remusrendering.wordpress.com/

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              • C Offline
                CPhillips
                last edited by 22 Jan 2008, 22:03

                @julius said:

                thank you so much! i finally got what i wanted!

                can i ask you one more thing? is it possible to make the cannon rotate on the blue axis with a wheel+servo joint?

                I had to explode and re-group the wooden parts. It was messed up somehow.


                Cannon-5.skp

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                • J Offline
                  Julius
                  last edited by 22 Jan 2008, 22:16

                  now it works perfectly! thanks!

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                  • J Offline
                    Julius
                    last edited by 20 Feb 2008, 14:15

                    have a look at the completed model!

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                    • A Offline
                      architectboy
                      last edited by 20 Feb 2008, 21:39

                      Check out this cannon that I made. It's self moving and quite realistic. Different reloading mechanism, hope it's intuitive.


                      Cannon.skp

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                      • J Offline
                        Julius
                        last edited by 20 Feb 2008, 22:30

                        nice! it's very powerful, though i found quite hard to understand how it fires...

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                        • P Offline
                          pilou
                          last edited by 21 Feb 2008, 00:24

                          Maybe you can fire some flowers and it will be perfect πŸ˜‰ 😎

                          Very cool engine πŸ‘

                          Frenchy Pilou
                          Is beautiful that please without concept!
                          My Little site :)

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                          • A Offline
                            architectboy
                            last edited by 21 Feb 2008, 02:41

                            Showing hidden geometry and turning on transparency will reveal all secrets of the cannon.

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                            • J Offline
                              Julius
                              last edited by 28 Feb 2008, 14:02

                              at last...
                              [flash=425,355:3n7imfcw]http://www.youtube.com/v/DoVzTrK3NGc[/flash:3n7imfcw]

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