Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Thu, 31 Oct 2002 13:01:25 -0500
Message-ID: <redirect-1849507@logan.com>
From: "Bob Jude" <bobjude@charter.net>
Subject: LNC2, GM28 Replacement
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>How much pressure can you specify?  Why not higher than 110 lbs?  Maybe 120
or 130 lbs?  Have you installed this unit yet?

In my experience, cold weather seems to affect the total force of the strut<

Hi Rick,
Yes, you can specify compression force up to 130# for the McMaster-Carr gas
spring but there is a limit for reasons mentioned by Scott Krueger and in
addition, you probably should be careful not to exceed the limits of the
over-center link.  I don't know what that limit would be.  Personally, I am
not concerned about the nose gear pushing against the gear door.  Most of us
have that little arc inscribed in the top of the nose gear door anyway.
I have not installed the unit yet.  I may do that today.  Will keep you
posted on the results.
Yes, I agree, temperature does have an effect on the internal pressure of
the unit.  This should tell you that you should prepare for the worst case
conditions.  In other words, the problem is even worse than I have outlined.
I have made all of my measurements at room temperature.  My method of
measurement is to press down on a calibrated scale using a 2x2 lever so that
I have better control of the movement.  I take the reading with the rod
pushed in about 1 inch and stationary (not moving).
The McMaster-Carr unit that I bought measured consistently, exactly 120#, as
specified.  Measurements on the new AVM units from Kit Components were
inconsistent with variations from 95 to 100#.
Bob Jude