Alan,
It is absolutely imperative you pay attention to the normal foam tailplane
build instructions:
We have alerted Europa to these issues in general, but I am not tech support
any longer for the factory and cannot give you a definitive answer to why
this occurs other than it is not quite ready for a builder to assemble just
yet without extensive knowledge of how the tabs and stab are built.
Yes the stabs go on the tube, but the stab to fuselage fitting and the TP
inserts for the drive tab pin seating must be done with great care.
The flange (skin surface overhanging the root rib) must be trimmed to allow
the TPs to fully seat in the root of the stab. They will be proud a bit on
one side, once the flange is trimmed to allow the pins to fully seat and the
TPs to be in contact with the rib. Then scuff the area and seat with Redux
and make a nice transition to support the bush.
Next your trim tabs.
No amount of work will get things perfect on the tabs. Always go steps
ahead before proceeding to a cut line. The MS 20001-3 hinge must fit the
flange skin dead flat. So both the tab and stab top skin flanges must be
trimmed to allow the hinge to fit square and flat.
Should the tab be too long for the stab TE, you would have to cut the rebate
in either the tab or stab, or lengthen the stab with a few layers of glass
and some careful molding.
Note also that the hinge line skin bonds are so thick that a normal 1/16 to
1 mm inch gap after paint will jamb the control as the hinge line is so far
---From the upper skin due to the excessive thickness of the skins, so an
angled surface must be made to allow proper UP movement of the tab.
The same problem exists with the ailerons.
I have shown the owner the problems first hand. I will forward (when I have
time) more issues with the NG control surfaces.
These are not insurmountable problems in fitting the surfaces, just not
quite cut and bolt up and its done assembly (slot A tab B we all hope for).
Regards,
Bud Yerly
Custom Flight Creations.
-----Original Message-----
From: alan_hunter1664
Sent: Thursday, April 23, 2015 5:20 PM
Subject: Europa-List: NG Tailplanes & Anti-Servo Trim Tabs
<alan_hunter1664@yahoo.co.uk>
I seem to be stumbling from one problem to another at the minute. Maybe it's
me inexperience!
Whilst waiting for an answer on my Tailplane Torque tube issue I though I
would complete the quick build Tailplanes. This is achieved by bonding the
bottom skin and the tip using araldite 420. This was completed with only
minor problems along the way. However, fitting the Anti-servo trim tabs is
another matter. I've not approached Europa with this yet as I wanted to see
if anyone else had overcome the problem. The anti-servo tab now comes
pre-built but this is not reflected in the manual. The issue is that if I
align the trailing edge of the trim tab with that of the tailplane there is
insufficient trailing edge at the root to attach the trim tab to and there
would be restricted movement of the trim tab. there are 'trim lines' on the
tailplane training edge and trim tab upper leading edge however trimming
them to these lines would make the anti-servo tab extend proud of the
tailplane trailing edge, is this normal? I've attached some photos which I
hope highlight the issue. !
Any ideas?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=441191#441191
Attachments:
http://forums.matronics.com//files/img_0429_113.jpg
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