Message-ID: <000c01bf1b04$86011420$eb818ed1@pavilion>
From: "J. N. Cameron" <CIC@centurytel.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: Amine blush;  Wire insulation
Date: Wed, 20 Oct 1999 09:07:01 -0500
Mime-Version: 1.0

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Amine blush:  The folks at Jeffco told me that the first thing they do after
a layup cures is to wash it with clean, warm water, which removes the sticky
film you often get on the surface after cure.  Whatever it is, it's water
soluble.  I did this routinely building my ES, and after the surface dries,
it looks and feels clean and not at all tacky.  May it's the toe of newt
that goes in the witches' brew we call epoxy.

Wire insulation:  Lots of discussion about this vis-a-vis the MD-11 crash
off Canada.  Maybe tefzel ain't so hot after all?  I've got an e-mail
inquiry in to the Belden folks about insulation types, but I'm not convinced
that using all (or mostly, see below) tefzel insulated, milspec wire is
worth the hassle and expense.  It's stiff, the insulation cuts rather
easily, it only comes in one color, it's heavy, and it's expensive.
Ordinary PVC-insulated hookup wire (like Belden 8524) passes the VW-1
flammability test, is inexpensive, and comes in about fifty colors
(including stripe combinations).

Besides, how many installations have you seen that use all milspec,
tefzel-insulated wire, then add in RG-58 (which is PVC insulated), then run
the whole bundle through a PVC pipe (which Lancair supplies as conduit
material)???  A better solution would be to use standard aluminum electrical
conduit tubing, and for those who want to stick with teflon, Belden's
83000-series wires have teflon insulation, 600V, 200C rating, and come in 10
stock colors (they meet milspec MIL-W-1687E/4 if anyone has the energy to
dig it out).

Jim Cameron  (ex-ES builder, new kit on order for Feb.)


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