Hello Meredith,
I received the spring material today and installed it into my =
Spregnether vertical and the unit centers perfectly.  Thanks for your =
assistance and the bronze hinge material.  The test bed vertical made =
with curtain brackets and flat spring material seems very interesting =
and within the capability of someone inexperienced to make.  Do you =
think you will be able to get #3 up to 3 to 5 sec.?
Thanks again
James Allen
  ----- Original Message -----=20
  From: meredith lamb=20
  To: psn-l@.................
  Sent: Friday, August 29, 2008 1:57 PM
  Subject: A test curtain rod bracket/s vertical


  Hi all,

  The below URL is of a simple table top test vertical setup I tried =
today.  Its uses only flat spring material for the
  hinge/pivot, main spring/s and seems to allow some limited mass weight =
variations by sliding the 2 main springs
  on the "mast" (bracket) upward.   The test versions of the natural =
period ran from 1 to almost 2 seconds...probably
  typical for such.  This is ONLY a test vertical mainly looking at the =
pivot and flat springs used; I don't really know
  if its really worth pursuing.  Their is 3 "varieties" on the page; =
with the last one looking much more potentially useful. =20

  http://seismometer.googlepages.com/crv

  Take care, Meredith







Hello Meredith,
I received the spring material today =
and installed=20
it into my Spregnether vertical and the unit centers perfectly.  =
Thanks for=20
your assistance and the bronze hinge material.  The test bed =
vertical made=20
with curtain brackets and flat spring material seems very interesting =
and within=20
the capability of someone inexperienced to make.  Do you think you =
will be=20
able to get #3 up to 3 to 5 sec.?
Thanks again
James Allen

  
----- Original Message ----- 
  From:=20
  meredith lamb 
  
To: psn-l@.............. 
  
Sent: Friday, August 29, 2008 =
1:57=20
  PM
  
Subject: A test curtain rod =
bracket/s=20
  vertical
  


  

  
Hi all,
  
 
  
The below URL is of a simple table top test vertical setup I =
tried=20
  today.  Its uses only flat spring material for =
the
hinge/pivot, main=20
  spring/s and seems to allow some limited mass weight variations by =
sliding the=20
  2 main springs
on the "mast" (bracket) upward.   The test =

  versions of the natural period ran from 1 to almost 2 =
seconds...probably
  
typical for such.  This is ONLY a test vertical mainly =
looking=20
  at the pivot and flat springs used; I don't really know
if its =
really worth=20
  pursuing.  Their is 3 "varieties" on the page; with the =
last=20
  one looking much more potentially useful.  
  
 
  
http://seismometer.googlepages.com/crv
  
 
  
Take care, Meredith