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Thread: Mechanical Design / Prop Design Pneumatics

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  1. Exclamation Mechanical Design / Prop Design Pneumatics 
    #1
    Join Date
    Aug 2008
    Location
    Near Pittburgh, Pa
    Posts
    50
    Hi guys,

    I am looking to build a couple props this year using steel tube that when powered with a pneumatic will move.

    I'd like this to be about the height of a chair then jump up to about 7' tall.

    Does anyone have a website that will be a starting point for the design of the 4 link design to get the math and angles for me.

    I have seen a couple that i can drag the mechinisum to see its movement.

    Thanks Guys!
    Michael Chilson
    Brookdale Campground Haunted Halls
    Kozy Rest Campground Haunted Hay Ride
    ScareHouse Pittsburgh, Pa (Actor)
    Designer & Technical Director
     

  2. Default  
    #2
    Join Date
    Nov 2008
    Location
    Mesquite, TX
    Posts
    2,788
    here are some great sites
    http://www.flying-pig.co.uk/mechanis...s/linkage.html
    and more specific to what your asking
    http://www.mechanisms101.com/fourbar01.html
    I find these links to be indespensible in the design phase.
     

  3. Default  
    #3
    Join Date
    Jun 2006
    Location
    Eastlake, Ohio
    Posts
    834
    If you can reference a specific prop I could give you approximate dimensions. I don't give out exact dimensions and tolerances on props I build, but generally don't have a problem sharing linkage lengths and cylinder strokes.

    There is a 4 bar simulation software package here , http://www.boopack.com/software.html , that is free.

    Also using an engineering program like autocad or solidworks, or even google sketchup helps. I design all my props in Autocad to make sure the dimensions work before I start cutting steel.
    Brian Warner
    Owner of Evilusions www.EVILUSIONS.com
    Technical Director of Forsaken Haunted House www.Forsakenhaunt.com
    Mechanical Designer (animatronics) at Gore Galore www.Gore-Galore.com
     

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