Here is the solution to your binocular problems. I think the seat and springs are optional. With the right trailer hitch you could haul this anywhere. http://www.jimsmobile.com/images/rb16_prototype1.jpg Quoting Canopus56 <canopus56@yahoo.com>:
--- Chuck Hards <chuckhards@yahoo.com> wrote: <snip>
Without changing the design much, careful choice of materials and attention to details can make a huge difference in both load capacity and performance. <snip> The large bino mounts that are substantial enough for heavy loads have ergonomic problems, as Kurt pointed out.
It's the eccentric load that's the killer. I suspect Seth has probably put his 100s on the Orion parallelogram mounts sold by the planetarium and found it to have too high a settling time, if not difficultly in maintaining a firm clasp on heavier 100s in all positions. The UA cradle "U" mount design tries to solve the eccentricity problem for larger binos by holding the weight off to one side, but still close to the central post.
The other design solution is to simply make the whole thing beefier, as you do, Chuck.
Here's some photos of a beefier parallelogram bino mount that may interest you:
http://www.astro-tom.com/projects/binocular_mount.htm
- Kurt
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