Four Bar Linkage Wings

Mon, 25 Jun 2012

Further progress on using four bar linkages to drive wings. I've tried a variety of different geometries, finally settling on this layout. The dimensions of the bars are shown in the final image.

Having decided on a wing geometry I've opted to drive the wings using a crank slider mechanism. Rather than re-inventing the wheel my first prototype is made using the simple crank slider project which can be downloaded here. The only thing that I changed was to increase the throw of the crank slightly.

 


The wings are driven by push rods connected between the slider tube on the box top and the centre linkage on the wing.


The four bars of the wing linkages are clear in a front view.

Next to add the wings to some sort of character. I'm torn between a flying fish and a flying cow…

Comments (12)

  • cool022883 June 25, 2012 at 4:23 pm

    the wings look great the

    the wings look great the movement is amazing on them and they would work great for any model that had wings on it.

    maybe you could do a flying fish and add some kind of linkage to the push rod to make an undulating tail, that would be my vote but a flying cow would be just as odd =) maybe some other members can add their input and help make your decision  easier

    I think in might make a good bat 🙂 – RI

  • Smelter June 25, 2012 at 5:52 pm

    Mr Da-Vinci would be

    Mr Da-Vinci would be proud!

    🙂 – RI

  • DobbyKnits June 25, 2012 at 6:44 pm

    Marvelous!
    I know the Flying

    Marvelous!

    I know the Flying Pig days are long gone.  But perhaps a reprise just for these magnificent wings?

    But if it's a bat the artist wants, then a bat he shall have.  ^__^

    I'll always be a die-hard Flying Pig fan, though.  *<):^D

    Also – do I need to start some kind of petition to bring Card Bawdy back?  [giggle]  I really would love that.

    Best wishes, and thanks for all the fun!

    – Linda

    Ooo – err, I didn’t realise CardyBawdy was off line. just looking into it now – RI

  • Arhylda June 25, 2012 at 8:56 pm

    A bat would be awesome! 😉

    A bat would be awesome! 😉

    • umehta June 25, 2012 at 9:32 pm

      “But if it’s a bat the artist

      "But if it's a bat the artist wants, then a bat he shall have.  ^__^"

      I am afraid if a bat is given these wings, it will actually fly!

  • cool022883 June 26, 2012 at 12:36 am

    so if rob creates a bat

    so if rob creates a bat does that make him a bit batty =)~~…..j/k rob

  • Deal June 26, 2012 at 1:24 am

    Yes, it would make a great

    Yes, it would make a great bat. But there already is a great bat out there for us. And a fish is…well a little prosaic it seems to me. But now a cow! A flying cow (that just jumped over the moon?), how neat that would be.

    Of course, there are angels to consider,too and flying monkeys…it isn't Kansas anymore is it? 

    • umehta June 26, 2012 at 3:15 am

      If not bat then how about a

      If not bat then how about a witch on a broomstick? But I still like the bat idea regardless.

      • cool022883 June 26, 2012 at 4:46 pm

        there is a witch on a broom

        there is a witch on a broom stick on the flying pig website    an  aa.here is the link

        and there is a flying pig on there too 

        http://www.flying-pig.co.uk/flying-pighttp://www.flying-pig.co.uk/flying-pig

        http://www.flying-pig.co.uk/content/bewitched

        • umehta June 26, 2012 at 5:46 pm

          Ok, now we need help from

          Ok, now we need help from Rob.

          Rob, what are you thinking?

          I'm thinking, so many good ideas, so little time… I've just finished taking pictures of a flying cow though. Blog post shortly – RI

  • frankenpaper June 26, 2012 at 10:53 am

    I would have thought that a

    I would have thought that a pig would be the natural choice. But if you are determined to have something different then what if you have something that slips over the blank shape with costumes of different kinds of animals: wolf, sheep, cow, pig, etc.

Comments are closed.