Bob,
If I may make the case for the defence .........
Once upon a time in a life far, far away ......I worked for a company
developing and manufacturing anaerobic adhesives. (No ...it wasn't Loctite)
Part of my job entailed setting up an running the lab tests to quantify the
shear and peel strengths of the various formulations under differing
assembly (best case, worst case and typical) cleanliness conditions.
Even though I knew how the adhesive worked, it never ceased to amaze me how
strong this stuff was.
Some test pieces (typically a "ring and pin" for shear testing) would fail
before the adhesive.
One can use many adjectives to describe these adhesives, but "Mickey Mouse"
would be THE most inappropriate.
I CAN imagine the PFA sanctioning their use. Anaerobic adhesives (Loctite is
just one) are a near-perfect engineering solution to our very real
engineering problem.
They tick all the boxes.
They are low cost, simple to administer, lightweight, strong, chemically
resistant and (with the use of suitably masked heat) easy to dis-assemble.
Most importantly for us, there is no requirement for the entire surface area
of the two mating components be completely covered or even completely
de-greased. The surface area of the TP4 is so great, that an anaerobic will
work even if the adhesive does not wick over the entire surface.
Remember that this is being used in addition to (not in place of) the
standard drive pins. The adhesive's only function is to prevent relative
movement - the pins still take the load.
Regards
Nigel (the other one) Graham
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of R.C.Harrison
Sent: 10 September 2007 22:40
Subject: RE: Europa-List: Play in tailplane drive - Loctite
Steve,
IMHO I can not imaging how anyone could force you to use such a mickey
mouse fix as glue? And what's more I can not imagine the PFA giving its
blessing ? At what loading does it separate? What repeatability of
performance can be shown ? How can degreasing be guaranteed? Unless it
is used for destructive testing! Better use Jubilee clips ...at least
that is a known quantity factor! The PFA wouldn't clear that either !
Regards
Bob Harrison.
PS Sorry but I can not contain my opinion any longer!
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of steve v
Sent: 10 September 2007 21:58
Subject: Re: Europa-List: Play in tailplane drive - Loctite
Hi, Do you Know if we will be forced to Loctite the torquetube together?
I for one do not want to willingly use loctite, i would prefer to use
Bobs clamps as
removal would be far easier.
steve vestuti G-CEBV #573
Visit - www.EuropaOwners.org
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