On Fri, 02 May 2008 23:57:35 -0500, with neither quill nor qualm, Jon
Elson quickly quoth:

Jim Stewart wrote:
wrote:

I figured since this uses a ball-bearing to generate sine waves
(mechanisms like that have been seen here now and then), this would
have some interest:

http://www.tatjavanvark.nl/harmonium/


It has some resemblance to the guidance
computer in an old Pershing I missile.

Umm, yeah! She's built one of those, too. See "Inertial
Navigator Platform", and check out the video of her picking up
the stable platform and moving it around while it is running.
Extremely cool!

The harmonium is a beautiful and impressive piece of work. But I
wonder how many unnecessary gears and shafts there are in there. I say
that after noticing that the cone gear train is all the same tooth
size/pitch, so all rows of teeth engage simultaneously. Hmmm...
http://www.tatjavanvark.nl/tvva/harm3_12_s.jpg

--
Those who flee temptation generally leave a forwarding address.
-- Lane Olinghouse