Ted,

I will answer here so that others might have this information  if desired:

I recently emailed John Cole asking about the "Mini Lehman."  He replied and 
referred me to his web page http://pages.prodigy.net/fxc/JC.html .  The Mini 
Lehman is the 8th photo down.  He told me that it was about 13" long and 
built mostly from his larger sensors design, which uses oil containers for 
damping.  He uses crossed roller bars method for the upper and lower pivot 
points.  Exact dimensions are not readily available, bit the concept is 
discernable from the photos.  You can see from the other pictures the basic 
design of the full size sensors, which work VERY well.  John is the "Proud 
Papa" of this design and has many disciples worldwide.  (I will not supply 
his email for his security and privacy.)

The Amateur Teleseismic Net's webpage is www.teleseismic.net  and contains 
other member's homepages and live sensors.  As one can see, the group has a 
great deal of interest and knowledge in our hobby.  They were instrumental 
in helping me years ago.

Regards,
Jerry

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

  ----- Original Message ----- 
  From: Ted Channel
  To: psn
  Sent: Sunday, August 08, 2010 7:04 AM
  Subject: mini Lehman


  Hi Folks,  I have seen the term "Mini Lehman" and I think I have seen one 
picture, a long time ago.   I would like to build one, but before I start, I 
would like to get some details, if you have already gone through the 
exercise.  I would like to see pictures if you have them.

  Thanks, Ted tchannel@............ 







Ted,
 
I will answer here so that others might have this information  =
if=20
desired:
 
I recently emailed John Cole asking about the "Mini Lehman."  =
He=20
replied and referred me to his web page http://pages.prodigy.net/fx=
c/JC.html=20
..  The Mini Lehman is the 8th photo down.  He told me that it =
was=20
about 13" long and built mostly from his larger sensors design, which =
uses oil=20
containers for damping.  He uses crossed roller bars method for the =
upper=20
and lower pivot points.  Exact dimensions are not readily =
available, bit=20
the concept is discernable from the photos.  You can see from the =
other=20
pictures the basic design of the full size sensors, which work VERY =
well. =20
John is the "Proud Papa" of this design and has many disciples =
worldwide. =20
(I will not supply his email for his security and privacy.)
 
The Amateur Teleseismic Net's webpage is www.teleseismic.net  and =
contains=20
other member's homepages and live sensors.  As one can see, the =
group has a=20
great deal of interest and knowledge in our hobby.  They were =
instrumental=20
in helping me years ago.
 
Regards,
Jerry






  
----- Original Message ----- 
  From:=20
  Ted=20
  Channel 
  
To: psn 
  
Sent: Sunday, August 08, 2010 =
7:04=20
  AM
  
Subject: mini Lehman
  


  
Hi Folks,  I have seen the term =
"Mini=20
  Lehman" and I think I have seen one picture, a long time =
ago.   I=20
  would like to build one, but before I start, I would like to get some =
details,=20
  if you have already gone through the exercise.  I would like to =
see=20
  pictures if you have them.
  
 
  
Thanks, Ted tchannel@............