|A mock-up proved it was not going to work...|
The problem with the lower assembly was one of rigidity. When I first conceived the design I had it in my head to just bend some strips and brace the sides of the arms. It wasn't until I came to do it I realised the holes would not align conveniently. It was suggested that I used the 5½ inch slotted strips (Part No.55), suitably formed to fit, and and make use of the slotted holes to make the fixing the the arms. Apart from the fact that we only have a few of these and that I am reluctant to bend them, it would still have meant the end holes would not align. His suggestion reminded me that the formed slotted strip (Part No.215) is, when flattened out, longer than its stated 3 inches. It fits perfectly to act as a brace.
|The final bracing|
That seems to have sorted out the lower arms, now it is back to redesigning the central column with a bit of shape and sorting out the top support arm assembly...
The Rust Bucket thread regarding the lower arm assembly can be found HERE. There are even more suggestions on the Rust Bucket thread and I my take up even more ideas if the assembly still proves problematic.