Gary, These look great.........I am sure this sensor is well under =
way.........To you have you coil yet?
Ted
  ----- Original Message -----=20
  From: Gary Lindgren=20
  To: PSN List=20
  Sent: Sunday, June 08, 2008 7:31 PM
  Subject: My First Lehman


  I have some pictures for the first Lehman. At this point I'm just =
getting familiar with it and learning how to set it up. I have 2 sets of =
crossbars, one set is 1/8" SS dowel pins and the other is 1/8" hardened =
steel dowel pins. So far I think I like the hardened steel better. The =
upper mounting uses the idea from Ted, he suggested using a =BC-20 acorn =
nut. This worked perfect, I drilled a .020" hole in the center to =
receive the .017" dia. music wire. A nice snug fit. Then I use a =BC" =
dia. Si3N4 ball bearing. The ball bearing grade is 5, so it is very =
smooth and very hard, much harder than steel. So far I have been able to =
achieve just under 30 sec. resonant period. I'll be using the Chapman =
magnet system for both the sensor and damping. The Lehman is shown here =
http://gelindgren.googlepages.com/lehman_6_8_08.jpg    The bearing =
detail:  http://gelindgren.googlepages.com/lehman_bearing_6_8_08.jpg  =
The upper mounting: =
http://gelindgren.googlepages.com/lehman_upper_mount_6_8_08.jpg  and =
lower mounting: =
http://gelindgren.googlepages.com/lehman_lower_mount_6_8_08.jpg =20

  =20

  Suggestions are welcome,

  Gary

  =20

  =20

  =20

  =20

  =20

  Gary Lindgren

  585 Lincoln Ave

  Palo Alto CA 94301

  =20

  650-326-0655

  =20

  www.blue-eagle-technologies.com

  cymonsplace.blogspot.com=20

  =20

  =20







Gary, These look great.........I am =
sure this=20
sensor is well under way.........To you have you coil yet?
Ted

  
----- Original Message ----- 
  From:=20
  Gary=20
  Lindgren 
  
To: PSN List 
  
Sent: Sunday, June 08, 2008 =
7:31 PM
  
Subject: My First Lehman
  


  

  
I have some pictures for the first Lehman. At =
this point=20
  I=92m just getting familiar with it and learning how to set it up. I =
have 2 sets=20
  of crossbars, one set is 1/8=94 SS dowel pins and the other is 1/8=94 =
hardened=20
  steel dowel pins. So far I think I like the hardened steel better. The =
upper=20
  mounting uses the idea from Ted, he suggested using a =BC-20 acorn =
nut. This=20
  worked perfect, I drilled a .020=94 hole in the center to receive the =
..017=94 dia.=20
  music wire. A nice snug fit. Then I use a =BC=94 dia. Si3N4 ball =
bearing. The ball=20
  bearing grade is 5, so it is very smooth and very hard, much harder =
than=20
  steel. So far I have been able to achieve just under 30 sec. resonant =
period.=20
  I=92ll be using the Chapman magnet system for both the sensor =
and=20
  damping. The Lehman is shown here http://gelin=
dgren.googlepages.com/lehman_6_8_08.jpg=20
     The bearing detail:  http=
://gelindgren.googlepages.com/lehman_bearing_6_8_08.jpg=20
   The upper mounting: =
http://gelindgren.googlepages.com/lehman_upper_mount_6_8_08.jpg=20
   and lower mounting: =
http://gelindgren.googlepages.com/lehman_lower_mount_6_8_08.jpg=20
   
  
 
  
Suggestions are welcome,
  
Gary
  
 
  
 
  
 
  
 
  
 
  
Gary=20
  Lindgren
  
585=20
  Lincoln Ave
  
Palo=20
  Alto CA 94301
  
 
  
650-326-0655
  
 
  
www.blue-eagle-technologies.com
  
cymonsplace.blogspot.com