Meredith,

As I mentioned in my original Vertical message, this go around was a
concept. I consider the bearing system to be the most important part. =
Now I
need to add some height and a cross beam at the top to attach an =
extension
spring. By using Bob=92s calculation tool, it seems I could achieve a =
period
of about 1 =BD seconds with a spring with a very small constant. Then I =
would
use a feedback system to extend the period. Using Bob=92s period =
calculation
tool, I probably have a period of about 0.2 seconds for the vertical I
showed. Thank you very much for the feedback.

Gary

=20

=20

=20

=20

From: psn-l-request@.............. [mailto:psn-l-request@............... =
On
Behalf Of meredith lamb
Sent: Monday, November 17, 2008 9:08 AM
To: psn-l@..............
Subject: Re: Vertical Seismometer with Honey Support

=20

=20

On Sun, Nov 16, 2008 at 4:25 PM, Gary Lindgren 
wrote:

For the last few months I have been working on a vertical seismometer.=20

Or................being as you're mechanically overall part way (~60%) =
there
already.....add more upright vertical support

and a horizontal extension (and a conventional extension spring) to the =
mast
and try out Randall Peters vertical setup.

His claims of; "at least 20s, etc."  sure read enticing to verify.

=20

http://physics.mercer.edu/hpage/new-z.html

=20

Take care, Meredith

 =20














Meredith,

As I mentioned in my original Vertical message, this go =
around
was a concept. I consider the bearing system to be the most =
important
part. Now I need to add some height and a cross beam at the top to =
attach an
extension spring. By using Bob’s calculation tool, it seems I =
could
achieve a period of about 1 =BD seconds with a spring with a very small =
constant.
Then I would use a feedback system to extend the period. Using =
Bob’s
period calculation tool, I probably have a period of about 0.2 seconds =
for the vertical
I showed. Thank you very much for the feedback.

Gary

 

 

 

 



From:=

psn-l-request@.............. [mailto:psn-l-request@............... On =
Behalf
Of meredith lamb

Sent: Monday, November 17, 2008 9:08 AM

To: psn-l@..............

Subject: Re: Vertical Seismometer with Honey =
Support



 

 



On Sun, Nov 16, 2008 at 4:25 PM, Gary Lindgren =
<gel@.................> =
wrote:





For the last few months I have been working on a vertical =
seismometer. 







Or................being as you're mechanically =
overall part
way (~60%) there already.....add more upright vertical =
support





and a horizontal extension (and a conventional
extension spring) to the mast and try out Randall Peters vertical =
setup.





His claims of; "at least 20s,
etc."  sure read enticing =
to verify.





 





http://physics.mercer=
..edu/hpage/new-z.html





 





Take care, Meredith