William,
Great advice from Bob.
You probably saw the Europa Flyer article but the D cell foam tape in that
article was called gap seal tape, it is really just a foam window seal. It
is neat, simple, easy to replace, and cheap.
The foam seal allows the wing fairing to be installed with a slight gap of
3/32 to =BC inch between the fillet and the fuselage so you don=92t scrape
paint off the fuselage, have to use sticky tape, or loose precious knots du
e to a poor seal.
I use it on fairings between the fuselage and gear legs (I have fiberglass
transition fairings which really cleans up the flow) and the wing to fusela
ge seal.
Look at my website on drag reduction. Most of your build answers are in th
at techniques section.
Regards,
Bud Yerly
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From: Bob Harrison<mailto:ptag.dev@tiscali.co.uk>
Sent: Sunday, March 5, 2017 6:34 AM
Subject: RE: Europa-List: gap between the wing fairings and the fuselage
Hi! William,
Lots depends on how often you will be intending dismantling the aircraft ?
In my case I used silicone but only allowed it to attach on the fuselage by
covering the root fairing with cling film so the bead is retained on extra
cting the wings. Then you need to consider that the gap closes on the upper
surface and opens on the lower surface when the aircraft weight is taken b
y the lift on the wings. I tried to anticipate the deflection by uplifting
the wing tips only to find that the cured silicone wouldn=92t allow the re-
assembly of the wings!
Perhaps you are considering =93 grounded appearances=94 however you can=92t
satisfy all the conditions all of the time on such a flexible wing perform
ance coupled to the fuselage in the concept as it is.
The same goes on a trike leg fairing to the underside of the fuselage when
the leg is loaded when standing on the ground ?
Regards
Bob Harrison G-PTAG
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv
er@matronics.com] On Behalf Of William Daniell
Sent: 04 March 2017 23:41
Subject: Europa-List: gap between the wing fairings and the fuselage
the manual mentions sealing the gap with silicone.
is this the best method?
thanks will
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