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From: wtm%gr.utah.edu@cs.utah.edu (Thomas McCollough)
Newsgroups: rec.skydiving
Subject: Re: 3-ring maintainance..
Message-ID: <1991Jan10.121021.12454@hellgate.utah.edu>
Date: 10 Jan 91 19:10:21 GMT
References: <1991Jan10.120027.18066@gandalf.nhh.no>
Organization: University of Utah CS Dept
Lines: 21

In article <1991Jan10.120027.18066@gandalf.nhh.no> stig@gandalf.nhh.no (Stig Oeyvann) writes:
>He advised me to open the cut-away system every 30 jumps, to
>clean the cable and flex the risers to avoid 'setting' in the mechanism.

The material that the risers are made of will take a set from simply
being in the same position all the time.  I don't think that you need
opening shock to make the webbing take a set.

The older the rig, the more you should check it.  Most of the newer
rigs that I've owned or used don't seem to develop the problem as badly
as the older rigs.  Have they changed how they make webbing, or is it
just a matter age?

I recently heard that it is unnecessary to lubricate teflon coated
cutaway cables: "Lubricating simply causes the cables to get dirty
sooner, and doesn't reduce the pull force."  It has been the local
practice to clean and lightly coat the cables with WD-40 during
maintenance.  Any comments?

Tom McCollough
wtm@cs.utah.edu