Richard Schneider cfi2fly@.........
Sent: Mon, 28 Nov 2011 23:12
Subject: Re: Spring for AS-1 type vertical seismometer


Chris - I have reoriented the magnet block for the coil as you have suggest=
.
and, yes, I was able to close the magnet gap quite a bit since the arc of t=
he end of the boom no longer is a factor.
=20
I understand your suggestion to move the music wire fasteners closer to the=
 edge of the two flanges. I might try using larger washers as you have sugg=
ested to effectively shorten the length of the music wire. I can visualize =
how this will help stabilize lateral movement of the boom.
=20
I could not follow your AL can instructions. I guess I need more of a visua=
l for that to work with my lack of an imaginative mind.
=20
Hi Richard,=20
    What metal did you use to make the C at the end of the arm ? Could you =
cut out squares of SS sheet and drill central holes to make square clamp wa=
shers? Washers don't have to be round ! Maybe bend the top washer so that j=
ust the front and back edges grip the wire ?=20
    I will make a sketch of the atmospheric noise compensating setup this w=
eekend and send it to you.=20
    Regards,=20
    Chris Chapman  =20



=
Richard Schneider cfi2fly@.........

Sent: Mon, 28 Nov 2011 23:12

Subject: Re: Spring for AS-1 type vertical seismometer







Chris - I have reoriented the magnet block for the coil as you have su=
ggest.


and, yes, I was able to close the magnet gap quite a bit since the arc=
 of the end of the boom no longer is a factor.


 


I understand your suggestion to move the music wire fasteners closer t=
o the edge of the two flanges. I might try using larger washers as you have=
 suggested to effectively shorten the length of the music wire. I can visua=
lize how this will help stabilize lateral movement of the boom.


 


I could not follow your AL can instructions. I guess I need more of a =
visual for that to work with my lack of an imaginative mind.


 


Hi Richard, 


    What metal did you use to make =
the C at the end of the arm ? Could you cut out squares of SS sheet and dri=
ll central holes to make square clamp washers? Washers don't have to b=
e round ! Maybe bend the top washer so that just the front and back edges g=
rip the wire ? 


    I will make a sketch of the atm=
ospheric noise compensating setup this weekend and send it to you=
.. 


    Regards, 


    Chris Chapman  &nbs=
p;