Ron,
I have never noticed droopy ailerons. A laminar flow airfoil needs no reflexed
up or down for reduced drag. The Europa is not a Cessna or Piper flat bottom
airfoil.
Let me be clear, there are aircraft that have interesting aileron rig. To name
a few:
Ailerons that have slop at the center position and the ailerons actually float.
Ailerons that are not balanced and under G load droop because of poor geometry
of the aileron quick disconnect.
Poor QD geometry leading to interesting slippage and ailerons that have as much
as 1/4 inch play up, OK at the center, and tight at the bottom. That is a build
error or sloppy construction.
Try this: Lock your aileron in the wing rack (since you are not flying this
winter)
and try to move your belcrank with your hand. If you can flex the mechanism
look for loose screws.
Build the plane like the book then test fly please. You are not going to do
better
than ELSA or the prototypes.
Best Regards,
Bud Yerly
-----Original Message-----
From: owner-europa-list-server@matronics.com
<owner-europa-list-server@matronics.com>
On Behalf Of rparigoris
Sent: Sunday, January 23, 2022 5:02 PM
Subject: Europa-List: Re: Stalls & spins - any test pilot pireps out there?
Hi Group When stalling Europa pulling some positive Gs, I believe the net effect
of wing flexing upward at tips and design/geometry of aileron control has
ailerons
droop (less washout when pulling Gs). Nev had mentioned this to me and
suggested to begin with 1/8" reflexed ailerons. Has anyone compared stalling
when
pulling Gs with reflexed ailerons compared with even ailerons? Results? I
spoke with 1 owner that had at least 1/8" drooped ailerons and when I asked him
about it, he said he was faster but it would spin like a maple leaf without
not much coaxing. I think that was at 1G. Ron P.
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