budyerly(at)msn.com
Guest
|
 Posted: Tue Apr 28, 2015 5:38 am Post subject: NG Tailplanes & Anti-Servo Trim Tabs |
 |
|
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.
--
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
