Ramp walking toys

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Blog series by Tony Slattery updated 06-09-2015 12:33 AM 3 parts 26419 reads 12 comments total

Part 1: Return of the Wombat

06-05-2015 01:03 AM by Tony Slattery | 9 comments »

A short history of my journey into the art and craft of making ramp walking toys. Also known as passive dynamic walker. As much as I like making things, enjoy making things that move even more. It all started with the Ramp Walking Rhino, a design by Robert Lou Ma. I made one, and it kind of worked. I think the problem was a small hinge, which I did not have, so I used a piece of piano hinge instead. The challenge with these toys is to minimize friction, and the hinge was not sturdy ...

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Part 2: the man who started it all - Tad Mcgeer

06-08-2015 08:33 AM by Tony Slattery | 2 comments »

For anyone interested in ramp walking toys, here is a link to a youtube video: featuring Tad (not Ted) McGeer back in the 1980s with a very impressive model. Also if you google tad mcgeer passive dynamic walking find a lot more. Be warned – your life will never be the same again.

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Part 3: Introductory Computational Model of a Passive Dynamic Walker

06-09-2015 12:33 AM by Tony Slattery | 1 comment »

For those interested or can understand the science behind ramp walking toys, found this: Click on the image to download a PDF copy – links to a new page. This refers to the kind that rock from side to side, as the walking robot types. Trying to read this as a strange hypnotic effect on me – puts me to sleep zzzzzz…. My simple solution is to simply put the axis of rotation above the center of mass. Fortunately I have access to a CAD program allows me to pin...

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