PSN-L Email List Message
Subject: Re: Magnets
From: "Kay Wyatt" kwyatt@.............
Date: Sat, 27 Nov 2010 10:49:48 -0800
Chris (and Ed),
It is so wonderful to have you back online!!!!!
I think that you use those magnets for your damping assembly. Didn't Ed =
want info on your sensor assembly? If so, Ed might look at the =
following website on your design at=20
http://www.jclahr.com/science/psn/chapman/lehman/index.html
This webpage talks about your magnetic damping design, but it also has =
the design for your sensor. For the sensor, you use four 1"x1"x1/8" =
NdFeB magnets. I bought mine at K&J Magnetics at:
http://www.kjmagnetics.com/proddetail.asp?prod=3DBX0X02
If Ed wants to also use your magnetic damping design, I found your =
1"x1/2"x1/4" magnets at
http://www.kjmagnetics.com/proddetail.asp?prod=3DBX084
For the steel plates, I used www.SmallParts.com. They cut the plates to =
the exact size I wanted. It cost a bit more, but it was sure nice not =
to have to cut it myself.
Chris ... I'm so happy to have you back!
Kay Wyatt
----- Original Message -----=20
From: Christopher Chapman=20
To: edwianni1@........... ; psnlist@.................
Sent: Saturday, November 27, 2010 6:59 AM
Subject: Re: Magnets
Subject: Magnets
Chris, in a recent email to the PSN list you mentioned that you were =
using four NdFeB magnets in your "pickup" setup. Can you tell me the =
number/size of these magnets and are they in any special configuration? =
Thanks, Ed.
Hi Ed,
Check out www.jclahr.com/science/psn/chapman for drawings of my =
designs. I use 1" x 1/2" x 1/8" NdFeB bar magnets, magnetised through =
the large faces. Two 1/4" thick mild steel backing plates are provided =
with the magnets mounted in N/S pairs with the 1/2" ends adjoining. The =
2" long N/S pair on one plate is opposed by a 2" S/N pair on the =
opposing plate. The plates are mounted on 1/4" OD zinc plated mild steel =
bolts. This is very effective.
Regards,
Chris Chapman
Chris (and Ed),
It is so wonderful to have you back=20
online!!!!!
I think that you use those magnets for your =
damping=20
assembly. Didn't Ed want info on your sensor assembly? If =
so, Ed=20
might look at the following website on your design at
This webpage talks about your magnetic damping =
design, but=20
it also has the design for your sensor. For the sensor, you =
use four=20
1"x1"x1/8" NdFeB magnets. I bought mine at K&J Magnetics=20
at:
If Ed wants to also use your magnetic damping =
design, I=20
found your 1"x1/2"x1/4" magnets at
For the steel plates, I used www.SmallParts.com. They =
cut the=20
plates to the exact size I wanted. It cost a bit more, but it was =
sure=20
nice not to have to cut it myself.
Chris ... I'm so happy to have you =
back!
Kay Wyatt
----- Original Message -----
Sent: Saturday, November 27, =
2010 6:59=20
AM
Subject: Re: Magnets
Subject: Magnets
Chris,=20
in a recent email to the PSN list you mentioned that you were using =
four NdFeB=20
magnets in your "pickup" setup. Can you tell me the number/size of =
these=20
magnets and are they in any special configuration? Thanks, Ed.
Hi=20
Ed,
=20
Check out
www.jclahr.com/science=
/psn/chapman for=20
drawings of my designs. I use 1" x 1/2" x 1/8" NdFeB bar magnets, =
magnetised=20
through the large faces. Two 1/4" thick mild steel backing plates are =
provided=20
with the magnets mounted in N/S pairs with the 1/2" ends adjoining. =
The 2"=20
long N/S pair on one plate is opposed by a 2" S/N pair on the opposing =
plate.=20
The plates are mounted on 1/4" OD zinc plated mild steel bolts. This =
is very=20
effective.
=20
Regards,
=20
Chris Chapman
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