PSN-L Email List Message

Subject: Re: Spring for AS-1 type vertical seismometer
From: Richard Schneider cfi2fly@.........
Date: Sun, 20 Nov 2011 20:14:50 -0800


Hi Kay,

Sorry to hear about the accident which resulted in considerable trauma to
you.
We are all glad you are walking and getting better. Thanks for all you have
done for the amateur seismologist community.

All the best,

Rich Schneider
KCMA IRIS

On Fri, Nov 18, 2011 at 1:47 PM, Kay Wyatt  wrote:

> Sorry about the delay in getting back to you.  I was in a bad accident
> followed by surgery and physical therapy. But I am happy to say that I am
> now walking again and back at my computer.
>
> The AS-1 came with 2 sizes of springs.  The early AS-1s had a very narrow
> diameter spring and the newer AS-1s came with a 3/8" diameter spring.  I
> used McMaster-Carr for about 3/4 of the items that I needed for the
> seismometer.  The spring that I used is their part number 9664k19 described
> as "Spring-Tempered Steel Cont Extension Spring 36" Length, 3/8" Outside
> Diameter, .035" Wire":
>   http://www.mcmaster.com/#**9664k19/=ezpnh8
>
> Another question that I get asked often is what type of wire I used for
> the pivot point.  I ordered it from www.SmallParts.comwhich is another supplier that I like.  It is called "music wire" and is
> .020 inches in diameter.  The part number is SMW-020-36-10 and is at
>   http://www.smallparts.com/dp/**B001383CPS/ref=sp_dp_g2c_asin
> I have plenty extra of the music wire if you want me to mail it to you.
>
> I order all of my magnets from K&J Magnetics at www.kjmagnetics.com
> The magnetic damping devices requires four of part #BX084 which are 1" x
> 1/2" x 1/4"
> The sensor assembly requires four of part #BX0X02 which are 1" x 1" x 1/8"
>
> I have a complete part list that I can supply anybody that wants it.
>
> Thanks!
> Kay Wyatt
>
>
>
> -----Original Message----- From: tdavisjb
>
> Sent: Thursday, November 17, 2011 9:37 PM
> To: PSN Listserver
> Subject: Spring for AS-1 type vertical seismometer
>
>  Folks,
> I am building a vertical seismometer based on drawings put together by Kay
> Wyatt (with help from Chris Chapman), it uses a piano wire hinge and the
> coil is attached to the boom. My current problem is locating a spring for
> this thing. I have found one at the local hardware store, it's long enough
> (about 14") but it's pretty large in diameter and perhaps a bit too stiff.
> I have tried to contact Kay but have had no luck. I work in a middle school
> here in Portland (I'm the tech support person) and we have 2 AS-1's that I
> maintain. Their springs are much smaller in diameter. So I am wondering if
> any one on the list knows where, or how I would go about obtaining such a
> spring.
> I might mention that I have built two horizontal seismometers based on  the
> design that Chris Chapman helped to design in England for use in schools.
> They use crossed carbide rods for hinges. I wound my own coils and hope to
> have them up and recording within a year (being realistic here, as I have
> been working on all three seismometers, on and off for almost a year
> already). So I may be asking more questions!
> Thanks in advance for any help. You can respond here or email me direct:
> tdavisjb@............
>
>
>
> ______________________________**____________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with
> the body of the message (first line only): unsubscribe
> See http://www.seismicnet.com/**maillist.htmlfor more information.
> ______________________________**____________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with the body of
> the message (first line only): unsubscribe
> See http://www.seismicnet.com/**maillist.htmlfor more information.
>
Hi Kay,
=A0
Sorry to hear about the accident which resulted in considerable trauma= to you.
We are all glad you are walking and getting better. Thanks for all you= have done for the amateur seismologist community.
=A0
All the best,
=A0
Rich Schneider
KCMA IRIS

On Fri, Nov 18, 2011 at 1:47 PM, Kay Wyatt <kwyatt@............ om> wrote:
Sorry about the delay in getting= back to you. =A0I was in a bad accident followed by surgery and physical t= herapy. But I am happy to say that I am now walking again and back at my co= mputer.

The AS-1 came with 2 sizes of springs. =A0The early AS-1s had a very na= rrow diameter spring and the newer AS-1s came with a 3/8" diameter spr= ing. =A0I used McMaster-Carr for about 3/4 of the items that I needed for t= he seismometer. =A0The spring that I used is their part number 9664k19 desc= ribed as "Spring-Tempered Steel Cont Extension Spring 36" Length,= 3/8" Outside Diameter, .035" Wire":
=A0 http://www.mcmaster.com/#9664k19/=3Dezpnh8

Another ques= tion that I get asked often is what type of wire I used for the pivot point= .. =A0I ordered it from www.SmallParts.com which is another supplier that I like. =A0It is= called "music wire" and is .020 inches in diameter. =A0The part = number is SMW-020-36-10 and is at
=A0 http://www.smallparts.com/dp/B001383CPS/ref=3Dsp= _dp_g2c_asin
I have plenty extra of the music wire if you want me to= mail it to you.

I order all of my magnets from K&J Magnetics at www.kjmagnetics.com
The magne= tic damping devices requires four of part #BX084 which are 1" x 1/2&qu= ot; x 1/4"
The sensor assembly requires four of part #BX0X02 which are 1" x 1&quo= t; x 1/8"

I have a complete part list that I can supply anybody= that wants it.

Thanks!
Kay Wyatt



-----Original Me= ssage----- From: tdavisjb=20

Sent: Thursday, November 17, 2011 9:37 PM
To: PSN = Listserver
Subject: Spring for AS-1 type vertical seismometer

Folks,
I am building a vertical seismometer based on d= rawings put together by Kay
Wyatt (with help from Chris Chapman), it use= s a piano wire hinge and the
coil is attached to the boom. My current pr= oblem is locating a spring for
this thing. I have found one at the local hardware store, it's long eno= ugh
(about 14") but it's pretty large in diameter and perhaps a= bit too stiff.
I have tried to contact Kay but have had no luck. I work= in a middle school
here in Portland (I'm the tech support person) and we have 2 AS-1's= that I
maintain. Their springs are much smaller in diameter. So I am wo= ndering if
any one on the list knows where, or how I would go about obta= ining such a
spring.
I might mention that I have built two horizontal seismometers ba= sed on =A0the
design that Chris Chapman helped to design in England for = use in schools.
They use crossed carbide rods for hinges. I wound my own= coils and hope to
have them up and recording within a year (being realistic here, as I havebeen working on all three seismometers, on and off for almost a year
a= lready). So I may be asking more questions!
Thanks in advance for any he= lp. You can respond here or email me direct:
tdavisjb@......... net.



____________________________________________= ______________

Public Seismic Network Mailing List (PSNLIST)

To leave this list email PSNLIST-REQUEST@.............. with
the body of th= e message (first line only): unsubscribe
See http://www.seismicnet.com/maillist.html for more information.
__________________________________________________________

Pu= blic Seismic Network Mailing List (PSNLIST)

To leave this list email= PSNLIS= T-REQUEST@.............. with the body of the message (first line only)= : unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.
=


[ Top ] [ Back ] [ Home Page ]