Hi Rowland,
Cut some 1/8''ply shims 1'' wide by about 10'' long, push the frame into th
e tunnel and slip the shims behind the VERTICAL frame tubes. [ or tape them
to the aft of the tubes]
Check that the lower U/C frame mounting tube is level with the spar pin bu
shes, useing a straight edge / level set on the pins [slot the holes in the
firewall to achieve this] then kick / whack with a soft hammer the frame b
ack so it nips the two shims, that is where you drill / bolt it.
The frame tube geometry is all over the place, ignore it, just get the lowe
r tube level and the two vertical tubes 1/8'' off the firewall.
Cheers,
Nev.
-----Original Message-----
From: Rowland Carson <rowlandcarson@gmail.com>
Sent: Wed, 18 Apr 2012 19:48
Subject: Europa-List: landing gear frame geometry
I've made a big hole in the firewall and am trying to get my landing gear f
rame
LG01/3) aligned with the firewall according to the manual page 21M-2. That
alls for 3 tubes (top horizontal and 2 vertical side ones) to be between 1m
m &
mm from the vertical face of the firewall.
After some fettling of the holes and tunnel radii the frame goes in without
too
uch effort, but when I sight down the firewall for a rough check of how far
way the relevant tubes are I find they do not appear co-planar. The top tub
e is
oo far away at the starboard side, but the starboard vertical tube is almos
t
ouching the firewall. The top tube is about the right distance from the
irewall at the port side, but the port vertical tube could stand coming a
ittle closer. Oh, and the bottom horizontal tube is pretty much parallel to
the
irewall. The fuselage bottom moulding is sitting on a dolly that provides
upport for the curve of the underside and I have not observed any measurabl
e
wist in it.
I took the LG frame out and checked the parallelism of the tubes in questio
n by
aying a steel flat diagonally across (the piece I had wasn't long enough to
tretch from side to side or top to bottom); it rocks audibly on 3 out of 4
of
he combinations. My digital level also shows that the top and bottom tubes
are
bout a degree different from each other and the side vertical tubes are abo
ut
alf a degree different from each other.
Is this significant? Should I ask for a replacement LG frame?
My next step, if no other advice forthcoming, would be to try setting the
lignment with the swinging arm LG02 fitted temporarily, and accept whatever
isalignment the tubes have with the firewall.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
<rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
Skype, Twitter: rowland_carson Facebook: Rowland Carson
pictures: http://picasaweb.google.com/rowlandcarson
-= - The Europa-List Email Forum -
-= Use the Matronics List Features Navigator to browse
-= the many List utilities such as List Un/Subscription,
-= Archive Search & Download, 7-Day Browse, Chat, FAQ,
-= Photoshare, and much much more:
-
-= --> http://www.matronics.com/Navigator?Europa-List
-
-========================
-= - MATRONICS WEB FORUMS -
-= Same great content also available via the Web Forums!
-
-= --> http://forums.matronics.com
-
-========================
-= - List Contribution Web Site -
-= Thank you for your generous support!
-= -Matt Dralle, List Admin.
-= --> http://www.matronics.com/contribution
-========================
|