Hi! Cliff/Fred/all
I extended my flaps and faired them to fit the fuselage with a close out
when flaps are up.
I also included a tapered guide tube to direct the flap drive on to the
pin automatically for single man rigging. See:-
http://www.crixbinfield.freeserve.co.uk/europa.htm
Click on "Bob Harrison's Europa G-PTAG and scroll to "Flap slot covers".
Regards
Bob Harrison G-PTAG Europa MKI/Jabiru 3300
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Cliff Shaw
Subject: Re: Europa-List: Drag Reduction
Fred
I found help looking at pages like this.
http://www.wingsandwheels.com/textindex.htm
After building as careful as I could, I decided that gap seals on the
ailerons would not be of much help. My fit is very close and works
smoothly.
Now on your rudder you might need some help if you don't use a 48" hinge
like I did. On the flaps, I think something might help, but remember
they are slotted /fowler flaps and must vent air when deployed. The gap
seal would only be active when the flaps are up and mine fit nearly as
tight as my ailerons. I have not installed any glider type gap seals.
A note here, I did close-out all the ends of my control surfaces
smoothly fining in the void after the regular close-out. I think this
makes for less air turbulence spilling over the end of the surfaces.
Also I made a smooth faring from my flaps to the fuselage. I would build
it a bit bigger and a little differently if I were to do it again.
I know your guys in the UK have a devil of a time making these kinds of
mods to your Europas, but us in the left side have still some latitude
to "experiment". I love building, only if my wife would let me do
anothere one :) !
Cliff Shaw
1041 Euclid ave.
Edmonds, WA 98020
425 776 5555
http://www.europaowners.org/WileE
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