Re: [ATM] 16in tridob rebuild 1st light (flex rocker issues)

[Dave Smith <smithersscope@yahoo.com>]

Hi John,
Thanks for the comments! I believe I understand what
you're saying. However, I only have three bearings
supporting the OTA (all three contact altitude bearing
surfaces). And I don't have an Azimuth bolt or center
pivot (by virtue or nature of the tridob design). If I
were to aim these three altitude bearing axles
directly at the center of the ground ring it would
only serve to reduce contact between the bearing
surfaces and the roller bearing. I'm pretty sure that
would chew up my bearing surfaces more quickly.
Moreover, it wouldn't change the vector or angle of
force applied to the bearing from the weight of the
OTA. Somehow I need to make the flex rocker more rigid
and able to support the weight
without...well...flexing. I think that means either
wider or thicker or recreate it with less flexible
material (e.g. aluminum). The less flexible part seems
like an oxymoron in terms of a flex rocker, but there
it is. Heh.

Thanks for sharing the insight!
Dave
--- John Sherman <atmer@johnspics.com> wrote:

Dave wrote:> >Where my bearings are mounted at about
45
> > degree angles on the top surface of the flex
> > rocker I see that the wood is buckling
> 
John replied:> My flex rocker is rectangular, not
square. I had to
> mount the 4 wheels on 
> axles pointing at the AZ bolt. If your 45deg axles
> don't point at the AZ 
> bolt, then maybe that's why the rocker is buckling??



       
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