Thread: Help with lifting prop straight up with consideration for no left right rotation

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Anyone have picture or link for an armature that will raise skleton straight up and not allow unwanted rotation to left right? I am using a 12" stroke 1.5" bore cylinder. I have looked but most of what I find are finished prop and I would like to see the anti rotation component.
Thank you,
Todd

Have a look at this.......any help?
http://www.halloweenforum.com/member...der-mount.html
http://www.halloweenforum.com/member...ng-device.html

Todd,

What is your starting position? Do you want it to be laying down or sitting down? Do you have space behind the prop?

I could design an easy to assemble 4 bar mechanism for you that would do what you're looking for.

The easiest way, though a more expensive way, is to use an air cylinder that has a hex piston rod. Another way is to us e guide rods or rod that attaches to the prop and have a guide plate with holes slightly larger than the rods mounted on the cylinder mounts or somewhere where it will be stable. If you're using this in a sit up application I woiuld think that you would need to hinge the rods so they follow the raiseing and lowering of the cylinder.

Thank you for the responses, let me try clarify:
This is going to raise a skeleton torso straight up from behind an open casket lid. I invisioned simply mounting the cylinder straight up and welding a bracket to attach the torso. This unit will then be mounted to a base bracket that will bolt under the bottom of the casket.
I need to assure that the torso stays in the same verticle alignment with lid and does not try to rotate, so I am probably going to need some time of alignment rod/rods.

Hope this makes sense.
Thank you again,
Todd