RE: [ATM] Use of bearings in (static) mirror cells

["Jerry" <wa4guu@verizon.net>]

I had thought of something similar. But I couldn't picture that not to be a
form of edge support. The only difference is that it is an inside edge
support. And to my thinking the gimbals are superfluous as the edge support
negates the "Marvelde Force Couple". 

I had also thought of just drilling a hole in the center and putting a
retaining bolt through the middle. Not Richard Schwartz tight. Just tight
enough to prevent mirror drop out. Desparate, huh? 



-----Original Message-----
From: Ken Hunter 
I imagine a Plop or otherwise designed cell glued with
RTV as is normal but with additional support installed
as follows.

Perforate the mirror and add a counterweight that
applies side (locating) pressure to the mirror at the
COG by virtue of a gimballed pivot in front of the
cell face with the counterweight hanging behind. The
lateral force (referenced to the glass) would be
applied through a rubber O'Ring at the COG and
"INSIDE" the mirror itself to eliminate the distorting
forces from the point contacts being offset from the
COG.

 


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