PSN-L Email List Message

Subject: Re: Very Simple Sensor
From: meredith lamb paleoartifact@.........
Date: Mon, 12 Sep 2005 11:30:16 -0600


Hi John,

Your new "wooden" hinge approach;

(See: http://jclahr.com/science/psn/wooden/target14.html)

is so similar to your older excellent hinge for horizontals;

(See: http"//jclahr.com.science/psn/gate.html)

that it could indeed be quite worthwhile to continue the fine
work, and/or do more R&D to see how variations of your
original might also work.

Just from looking at it...I suspect one might even be able to
put typical "loose" nuts on the ends of the bolts, just to hold
the wire?

Another possible approach could be using a ~ long spacer with
internal end threaded holes. A drilled perpendicular hole near
the ends could contain the wire; where a inserted screw in the
ends would clamp/lock down on the wire. One could also put a
setscrew down in the threaded holes just past the drilled holes,
and use another screw to clamp down on the wire also for=20
better wire holding. Just a thought.....

Take care, Meredith Lamb


On 9/10/05, John or Jan Lahr  wrote:
>=20
> In early August I mentioned the "quick and easy" seismic sensor that
> I've been working on. After the recent Mw 7.7 earthquake in P.N.G.,
> I'm now confident that it works. Background noise is the biggest
> problem that I see at this time, and that may be due to the poor
> location of the sensor on a table on the third floor of the town
> house where I'm currently living. I'll be moving to a house soon,
> and will see how it works in a quieter location.
>=20
> See the "Version 3" pictures and recent seismograms here:
> http://jclahr.com/science/psn/wooden/ .
>=20
> clip.....
>=20
>=20
>=20
>
Hi John,

Your new "wooden" hinge approach;

(See:  = http://jclahr.com/science/psn/wooden/target14.html)

is so similar to your older excellent hinge for horizontals;

(See:  http"//jclahr.com.science/psn/gate.html)

that it could indeed be quite worthwhile to continue the fine
work, and/or do more R&D to see how variations of your
original might also work.

Just from looking at it...I suspect one might even be able to
put typical "loose" nuts on the ends of the bolts, just to hold the wire?

Another possible approach could be using a ~ long spacer with
internal end threaded holes.  A drilled perpendicular hole near
the ends could contain the wire; where a inserted screw in the
ends would clamp/lock down on the wire.  One could also put a
setscrew down in the threaded holes just past the drilled holes,
and use another screw to clamp down on the wire also for
better wire holding.  Just a thought.....

Take care, Meredith Lamb
 

On 9/10/05, John or Jan Lahr <= JohnJan@........> wrote:
In early August I mentioned the "quick and easy" seismic sensor t= hat
I've been working on.  After the recent Mw 7.7 earthquake = in P.N.G.,
I'm now confident that it works.  Background noise = is the biggest
problem that I see at this time, and that may be due to the poor
locatio= n of the sensor on a table on the third floor of the town
house where I'= m currently living.  I'll be moving to a house soon,
and will = see how it works in a quieter location.

See the "Version 3" pictures and recent seismograms here:=
http://jclahr.com/sci= ence/psn/wooden/ .

clip.....





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