I'll take one (if there's any left...).

Thanks,
Jack Ivey

-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@...............
On Behalf Of JAMES C. ALLEN
Sent: Friday, November 11, 2005 2:27 PM
To: psn-l@..............
Subject: TELEDYNE GEOTECH HELICORDER'S RV-301B

I just bid on and won three Teledyne Geotech Helicorder's model RV-301B,
for=20
which I am going to keep one and am willing to give the other two away.=20
These units will require repair.  However, if you want one go to the
EBay=20
listing for item # 6223171283 which closed yesterday select either one
or=20
both of the two on the right side of your screen and let me know.  I
will=20
inform the company to release it (them) to you.  You just have to pay=20
shipping which will run (in the USA) about $35.00 per unit.
James Allen
----- Original Message -----=20
From: "Wayne" 
To: 
Sent: Monday, November 07, 2005 8:57 AM
Subject: Re: low friction hinge discusson


>
> Subject: Re: low friction hinge discusson
>
>
>> Oh yes, one other point (pun intended) about points on surfaces, it
would=20
>> seem to me that mixing material is a good idea.  I belive I've heard
that=20
>> generally sliding surface bearings are better if the materials are=20
>> different.
>
>
> Regarding this, I had heard that in addition to choosing materials
with=20
> low sliding friction, a second bearing material was often used for
ease of=20
> subsequent maintenance.  That is, if the same bearing material were
used=20
> for both surfaces, both bearing parts would wear away at pretty much
the=20
> same rate.  With differing materials having different wear rates, only
one=20
> half of of the bearing would need to be replaced.  This could be
useful in=20
> those circumstances where "half" of the bearing is more readily
accesible,=20
> but the other "half" is not.  Don't know if this wear/replacement
business=20
> has any bearing (pun intended) on seismo hinges, however.
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSN-L)
>
> To leave this list email PSN-L-REQUEST@.............. with the body of
the=20
> message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>=20


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