Hi! All.......................and use suitably sized saddle washers under
the nuts of any bolts that are tightened up on the tubes.!
Regards
Bob Harrison G-PTAG
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of GRAHAM
SINGLETON
Sent: 18 April 2012 22:31
Subject: Re: Europa-List: landing gear frame geometry
Tony
better to plug with thick wall 4130 tube imho
regards
Graham
_____
From: Tony Renshaw <tonyrenshaw268@gmail.com>
Sent: Wednesday, 18 April 2012, 22:24
Subject: Re: Europa-List: landing gear frame geometry
Reference the landing gear frame, I recall making up a redux flox mix and
bedding in the tubes, so that the load were better distributed. I intend on
plugging the ends, probably with timber dowels prior to drilling and final
attachment, so I can tighten the bolts fully without deforming the tubes,
plus also it stops CO2 ingress into my tunnel area.
Regards
Tony Renshaw
Sent from my iPad
On 19/04/2012, at 6:19 AM, Neville Eyre <neveyre@aol.co.uk> wrote:
Hi Rowland,
Cut some 1/8''ply shims 1'' wide by about 10'' long, push the frame into the
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
bushes, 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
back 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 lower
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
<mailto:rowlandcarson@gmail..com> >
I've made a big hole in the firewall and am trying to get my landing gear
frame
(LG01/3) aligned with the firewall according to the manual page 21M-2. That
calls for 3 tubes (top horizontal and 2 vertical side ones) to be between
1mm &
3mm from the vertical face of the firewall.
After some fettling of the holes and tunnel radii the frame goes in without
too
much effort, but when I sight down the firewall for a rough check of how far
away the relevant tubes are I find they do not appear co-planar. The top
tube is
too far away at the starboard side, but the starboard vertical tube is
almost
touching the firewall. The top tube is about the right distance from the
firewall at the port side, but the port vertical tube could stand coming a
little closer. Oh, and the bottom horizontal tube is pretty much parallel to
the
firewall. The fuselage bottom moulding is sitting on a dolly that provides
support for the curve of the underside and I have not observed any
measurable
twist in it.
I took the LG frame out and checked the parallelism of the tubes in question
by
laying a steel flat diagonally across (the piece I had wasn't long enough to
stretch from side to side or top to bottom); it rocks audibly on 3 out of 4
of
the combinations. My digital level also shows that the top and bottom tubes
are
about a degree different from each other and the side vertical tubes are
about
half 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
alignment with the swinging arm LG02 fitted temporarily, and accept whatever
misalignment the tubes have with the firewall.
in friendship
Rowland
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