I've moved my half-built mechanisms onto a slightly larger MDF disc as they were protruding from the edge at one point and catching on the supporting frame. I have continued to use the same disc for some time and really it's a bit too small for my design. I find that getting relative sizes right can be a problem. I have the design on paper but there are often compromises to be made when the actual build begins. Sometimes parts that ideally work within certain parameters don't always obey my requirements! Just kidding, actually I did not anticipate just how much range of movement a certain part would be capable of until I built the mechanism, off the supporting structure. The result is that I need a bigger supporting structure, which is not a problem as I had one prepared for an earlier version.
Despite my fear of my wheels being judged as of inferior quality, I shall post pictures of both failed and/or successful current and future models, should I build any more.
I'm going to post some comments about my theory and perhaps some hints on the design. I know that as these appear some critics will dismiss them out of hand and others will argue logically against them, but I would like to suggest that until the complete picture or at least more of it becomes available, it might be thought better to refrain from at least completely dismissing them, because I have one or two surprises to post later on which might just convince otherwise.
JC
