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From: "bobjude" <bobjude@gateway.net>
To: "Lancair Mail List" <lancair.list@olsusa.com>
Subject: Flush Latches
Date: Tue, 4 May 1999 23:23:16 -0500
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>>
Marv,
  The latch you referred to (H5000-2) is made by The Hartwell Corporation.
Aircraft Spruce and Wicks both have it in their current catalogs.  I used one
on my oil filler access door.   Hartwell makes a line of latches of various
configurations.  The Freeman Aviation catalog that I have shows about 10 of
them.  Freeman Aviation is in Griffin, Georgia (404) 227-2602 or (800)
635-5631.  I recommend that you use a latch with a lighter spring for the
L320 cowling.  A lot of downward pressure is required to open the H5000-2
latch.  This results in the cowling bowing down about a half inch to an inch
every time you open the access door.  I didn't realize the problem until
after the latch was installed so I beefed up the cowling in the area of the
door with a perpendicular fiberglass support.  I think it would be a lot
easier if you just bought a latch with a lighter spring.  Maybe a H4600 or a
H4920 would be better.  Suggest you get info directly from Hartwell.

Bob Jude
N65BJ

[Thanks for the info on Freeman Aviation, I'll contact them tomorrow for
a catalog.  Maybe they know how to get in touch with Hartwell so I can
request data sheets directly.  

Actually, the area where I'll be using them is pretty beefy... the
firewall is forward by about an inch and the header tank is aft by a
similar amount, so I'm not real concerned about deflection during
operation.  I would think that the stronger spring would better insure
against accidental opening when in flight.  I'll research them all just
the same, though.   Thanks again.   <Marv>   ]



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