In re: cutting the slots
The scribe lines on my fuselage were likewise "slightly" off from the actual
location (and size) so I had to practice my fiberglass repair technique in
order to reduce the ridiculously large gap.
In re: trim tab movement
Read on a bit further and the intent is made clear. The next paragraph in
the manual concludes with this sentence: "A maximum total movement of 6
degrees and a minimum of 4.8 degrees OF TAB MOVEMENT (emphasis added)
relative to the tailplane is acceptable
Best regards,
Rob Housman
Irvine, California
Europa XS Tri-Gear
S/N A070
Airframe complete
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: Tuesday, October 23, 2007 4:22 PM
Subject: Europa-List: Tailplane slots in fuselage
Hi All,
Step 7 on build manual pg. 19-7 describes the required travel (4 degrees up,
12 degrees down) of the trailing edge of the tailplane from a neutral
position. My fuselage had a faint but discernible ridge line which I
interpreted to be a cut-out line for the slots for the tab link-rod TS05
which I previously followed when cutting out the slots. As I now have the
tailplanes mounted and am measuring to ensure they can achieve the required
travel, I'm finding that my slots are grossly oversized, and most probably
will be quite inviting for small birds and varmints. Have any of you faced
the same situation?
Now that I have marked the location of the tab link-rod in the extreme up
and down positions, and after taking into account the fore and aft movement
of the tab link-rod and adding 1/8" clearances, my intention is to do some
bid patching so that the slot is no larger than required.
I'm unclear as to the meaning of the last sentence on pg. 19-7 where it
states,
"...as the trailing edge of the tailplane is raised the trailing edge of the
tab raises even further, the ratio being approximately 1.3 to 1. Therefore,
when you have raised the trailing edge of the tailplane by 12 degrees, the
tab should have raised 15.6 degrees relative to the tailplane or 27.6
degrees from the zero start position.
A maximum total movement of 18 degrees and a minimum of 14.4 degrees
relative to the tailplane is acceptable."
Does the last sentence intend: A maximum total movement of the trim tab of
18 degrees and a minimum of 14.4 degrees relative to the tailplane is
acceptable."
Or am I really missing the point?
Fred
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