Steve. It doesn't matter too much what the level of the lift pin sockets
are. What matters is the angle of incidence of the wings and also that
the lift pins are securely fixed into the alloy plates embedded in the
wing roots. Before contemplating moving anything you should measure the
angle of incidence of both wings. (method in the builders' manual). They
may be identical whilst the placing of the lift pins and lift pin
sockets are not precisely the same in relation to the fuselage. The
latter probably doesn't matter very much as long as the positioning of
the lift pins is mot too far from the centre of those alloy plates. The
rear lift pin socket should have been positioned married up with the
previously fixed wing pin with the wings checked as having equal AOI.
Regards, David Joyce, GXSDJ
On 2021-05-15 10:57, Steve Ivell wrote:
> <SteveIvell@pestproof.co.uk>
>
> Hi John
>
> As every aircraft is hand made I would expect there to be minor
> variances on just about every single aircraft.
>
> Changing the rear wing pin sockets is a big process particularly as it
> is attached to the internal cross tube which was added to increase the
> gross weight. MOD 52. I'd leave well alone and see how it flies.
>
> Other members with much more experience may be able to give a better
> reply such as Bud Yearly.
>
> Kind Regards
>
> Steve Ivell
> Mob: 07971 128842
> E-mail: steveivell@pestproof.co.uk
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> <owner-europa-list-server@matronics.com> On Behalf Of John Kirkgaard
> Sent: 14 May 2021 13:49
> To: europa-list@matronics.com
> Subject: Europa-List: Twisted fuselage, or?
>
> --> <john.kirkegaard@gmail.com>
>
> It looks like I will need some very good advice from you fellow
> builders.
>
> I have measured the fixtures and torque tubes on my Europa a few times.
> Unfortunately I come to the same result in spite of using different
> methods.
>
> First I level up the fuselage making it 100% level in both directions.
> Then I measure down to the center of the pin hole forward wing pin
> bracket, on both sides. Using a horizontal laser-line.
> The elevation of the two wing fixings are found to be in exactly same
> level.
>
> Then measuring the level of the rear fixings shows that starboard wing
> pin socket is sitting 8 mm higher than the port one.
>
> The measuring the Flap tube I find that the Starboard side is also 9 mm
> higher than the port side.
>
> Going to the Tail plane Torque Tube I find the same picture there.
> And same for the foot wells.
>
> So the solution seems to be quite forward: change the position of the
> rear wing pin sockets, and ignore, that the fuselage will not be in
> level between the doors.
>
> But... During all measuring, the rudder is absolutely plumb. And my
> question to you guys: what will happen if I correct everything and
> leave the rudder approx. 10-11 mm out of plumb?
> Thanking in advance for any reply.
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501923#501923
>
> Attachments:
>
> http://forums.matronics.com//files/img_5202_275.jpg
>
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