Expanding Circle

Name of Model: The Blossoming Lotus

Created by: Kevin H. Knuth

Found at: http://www.huginn.com/knuth/blog/2007/05/10/the-blossoming-lotus/

Details: Here's an interesting little Technic mechanism that expands and contracts the way that Chuck Hoberman's creations do (if I were to post models made with another construction toy, it would be his Expandagon system (which doesn't appear to have an official website)). Since it's just a ring, you don't really get any of cross-sections that you'd need to build a full sphere, but I'm sure you could do lots of cool things with this if you have the parts (and of course, you probably don't have the parts). Thanks to all of the beautiful CAD material provided, you can try this one out on your own - it's not exactly building instructions, but it shouldn't be too difficult to figure it out. If anyone has an idea for a similar project on a smaller scale, I'd love to see it.