Hi Folks,  With the help of the PSN group, I have made several different =
sensors.   At least one sensor for each concept I have seen.  From all =
the designs, my favorite is a simple Vertical.   It is a long spring =
with a mass, magnet and coil.   This approach has been my best sensor.   =
It is limited by its period, 1.5 seconds but it is very sensitive, easy =
to build and nothing to maintain.   It records all the earthquake, near =
and far, big and small.   However it could be better.

I know there are many approaches, but I wish to build another vertical, =
starting with this design and improving it.   I would like to correspond =
with someone interested in helping me.   Before I begin we could review =
the design and look at ideas on how to enhance the various parts.   I =
would like someone's opinion as to what to expect =
if:................."What If I doubled the mass"?.............."What if =
I doubled the magnets"?
"How could I reduce the noise"?  etc.

Free time is in short supply, and I understand, but email me if =
interested.   I can do all the work, I think, but could use some =
direction, rather than a series of trials and errors.








Hi Folks,  With the help of the =
PSN group, I=20
have made several different sensors.   At least one =
sensor for=20
each concept I have seen.  From all the designs, my favorite is a =
simple=20
Vertical.   It is a long spring with a mass, magnet and=20
coil.   This approach has been my best sensor.   It =
is=20
limited by its period, 1.5 seconds but it is very sensitive, easy to =
build and=20
nothing to maintain.   It records all the earthquake, near and =
far,=20
big and small.   However it could be better.
 
I know there are many approaches, but I =
wish to=20
build another vertical, starting with this design and improving =
it.  =20
I would like to correspond with someone interested in helping =
me.  =20
Before I begin we could review the design and look at ideas on how =
to=20
enhance the various parts.   I would like someone's opinion as =
to what=20
to expect if:................."What If I doubled the =
mass"?.............."What=20
if I doubled the magnets"?
"How could I reduce the noise"? =20
etc.
 
Free time is in short supply, and I =
understand, but=20
email me if interested.   I can do all the work, I think, but =
could=20
use some direction, rather than a series of trials and =
errors.
 
Thanks, Ted