Chris,

The C end is made from Al.

I can think of a few ways to fasten the music wire and your idea sounds
plausible.

So, bottom line, we want to shorten the music wire as much as possible by
fastening it to the edge of the C end and the opposite end of where the
wire attaches? Do I have that correct?That would make the wire about 1/8"
long.

I will be looking forward to your sketch.

Richard

On Wed, Nov 30, 2011 at 4:32 PM,  wrote:

> 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
> the end of the boom no longer is a factor.
>
> 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
> suggested to effectively shorten the length of the music wire. I can
> visualize 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 drill central holes to make square clamp
> washers? Washers don't have to be round ! Maybe bend the top washer so that
> just the front and back edges grip the wire ?
>     I will make a sketch of the atmospheric noise compensating setup this
> weekend and send it to you.
>     Regards,
>     Chris Chapman
>
Chris,
=A0
The C end is made from Al.
=A0
I can think of a few ways to fasten the music wire and your idea sound=
s plausible.
=A0
So, bottom line, we want to shorten the music wire as much as possible=
 by fastening it to the edge of the C end and the opposite end of where the=
 wire attaches? Do I have that correct?That would make the wire about 1/8&q=
uot; long.

=A0
I will be looking forward to your sketch.
=A0
Richard


On Wed, Nov 30, 2011 at 4:32 PM, <chrisatupw@.......> wrote:


=
Richard Schneider cf=
i2fly@.........
Sent: Mon, 28 Nov 2011 23:12=20

Subject: Re: Spring for AS-1 type vertical seismomete=
r




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.
=A0
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.

=A0
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.
=A0
Hi Richard, 
=A0=A0=A0 What metal did you use to make=A0the C at t=
he end of the arm ? Could you cut out squares of SS sheet and drill central=
 holes to make square clamp washers?=A0Washers don't have to be round !=
 Maybe bend the top washer so that just the front and back edges grip the w=
ire ? 

=A0=A0=A0 I will make a sketch of the=A0atmospheric n=
oise compensating setup=A0this weekend and send it=A0to you. 
=A0=A0=A0 Regards, 
=A0=A0=A0 Chris Chapman=A0=A0=A0