Wagging Dog Tail Mechanism, Progress Report.

Fri, 28 Jan 2011

Okay, so I've established that I can use a linkages to magnify the motion of a pendulum. Time to try and fit it into a neatly set out box that can be used in a completed character model.

I've set the pendulum so that it is swinging back and forth in the box hinged at a hole in the top of the box with a paper hinge to reduce friction. Again, I've used a couple of coins for the weights. The linkage between the pendulum and the tail now has a ninety degree twist so the tail can wag side to side.

That'll do nicely! Next step: wrap a body and head round the mechanism.

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Comments (4)

  • Nobledesign January 29, 2011 at 1:42 am

    So great to se the

    So great to se the development once again. It's so easy for you "…now has a ninety degree twist so the tail can wag side to side" Watching you, I can pretend that I understand how to do something like that.

    • trishjoyce January 29, 2011 at 1:53 pm

      I’m in agreement with you

      I'm in agreement with you nobledesign…right now I've got a big ! over my head… hahaha so I'll nod and say MMmmmm yes yes, while waiting patiently for the model,

  • hugo leandro January 29, 2011 at 5:03 pm

    It sounds great, Rob. Have

    It sounds great, Rob. Have you thought the idea of adding a crankshaft and a cam in order to make moving, at the same time, head(cam) and tail(counterweight)? Taking advantage of moving head the torque makes the lever moving and it results in tail moving. Could also add a character of an obedient dog, a funny one…Just suggestion.

    • robives January 30, 2011 at 8:49 pm

      Thanks everyone. At the

      Thanks everyone. At the moment I'm planning in sticking with the single mechanism. I might give the cam idea a try, maybe vibration from turning a handle would make the tail wag, it doesn't need much to set it going.

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