Hi! Steve
You may find a little out of flush with the tail plane fairings to the tail
plane root since the
a/c is rarely seen with all controls neutral nothing lost but pride!
The angle of attack for each tail plane needs to be the same, or at least to
a close tollerance
and I can't remember it! What did piss me off was that I spent lots of time
getting 12 degrees
movement with the tailplane somewhere (to the book) don't ask me where
because I prefer to erase
such from my mind! Then Andy Draper wanted another degree on final
inspection, which meant a whole new ball agme removing about 1/4" from the
top balance weight bump stop!.
Your second item...... find your original drive pin positioning jig (Some
hope!) if not make another to suit the pins where they are. Then dremel all
the existing lay up off the surface of the drive plate, then apply a heavy
copper hot soldering iron for the full length of the plate and the heat will
release the plate so you can prise it off. I would put the new plates in
the same place using your positioning jig, after roughing up the old bed ,
then you will need to slightly shorten the tee bar ends to allow for the
increased dimension. You'll also need to heat the tee bar to remove the
plastic inserts (carefully or you'll need new inserts !)
Happy Days !!!!!
Regards
Bob Harrison G-PTAG
-----Original Message-----
From: owner-europa@post.aviators.net
Subject: Tailplane to root fairing alignment, -and servo pins
I have started jumping around on doing mechanical assembly of the fuselage
components/systems. It seems whenever I get into something one little item
keep me from completion so rather than wait for a part or information I go
to another part. This week I find myself at the tail end.
Upon installing the tailplanes it appears that the angle of attack of one is
greater than the other. This appearance stemming from the alignment of each
tailplane root with the fairing moulding of the fuselage. The port side
angle of attack looks greater when compared with the moulding on the
fuselage. This is especially disconcerting since I had spent days many
months (years?) ago lining the left and right sides up when constructing the
tailplane assemblies.
However upon jigging up my digital level and measuring the aoa of each
tailplane to the best of my ability, I find that I am within 0.1 degree
between left and right. My assumption is that the molding is off slightly
and I may have a small shape variance between the leading edge profiles near
the molding giving the appearance of highly differing angles of attack.
Has any one else seen this on their fuselage moulding? It is disconcerting
but I am not planning on changing anything as the level doesn't read to
better than 0.1 so I am within the capability of my tools. Any thoughts out
there on this?
A second item:
I find that my left and right servo tabs are not lining up (no not in the
same direction as the apparent difference of the tailplanes noted above!).
Though however this is a good thing as the drive pins need to come out to
implement the installation of the beefier units that I almost had to beg
Europa to send me. Do any of you who have performed the retrofit have any
tips or shortcuts for the swap out to to enhance alignment. I plan on
trying to use the T bar to reset these. Any tips on ripping the old units
out to preserve the planar alignment of the pin plate?
Steve Hagar
A143
Mesa, AZ
(finally some good building weather, I can now leave the garage door open)
--- Steve Hagar
--- hagargs@earthlink.net
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