Ed,

Rather than "wire" I'd probably recommend a thin foil flexure for the 
boom pivot.  Mauro Mariotti sketched out a garden-gate design that 
works on that principle, though I think he uses thin razor blade 
material (much too thick in my opinion) as the flexure.   But you can 
see the idea.    http://mariottim.interfree.it/doc02hl_e.htm

To make that work in a Lehman, the boom has to somehow fork around 
the main support column so that the flexure can be on the back side, 
and the column has to be tilted such that the lower flexure pivot is 
almost directly below the wire attachment point at the top.  It would 
be a little harder to make, but should perform very well.  Angel's 
picture gives a good idea of how that works, though he is, in fact, 
using a "wire".

Brett


At 07:49 AM 6/6/2010, you wrote:
>How would the "wire" actually be setup or configured physically in 
>the "standard" Lehman.   Ed.


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