Hi Ron,

> I purchased a set of wing fairings from Fred Klein.

Congrats!

> I know you made your fairings completly removable to allow fitting of
> glider wings.
> 
> I only have a few pics that show perhaps 3 screws holding the aft
> section to the fuse.
> 
> Would you mind describing details how you proportioned and mounted?

Well, this was near the end of the total project, and I got pretty lazy
by then and have not made much pictures or notes, but just wanted to
finish the thing as quick as possible.

Anything specific you want to know?

What I remember worth noting is that
1) I made the flap root extensions as if there were no fairings. The
upper side of the flap can later be used as a mold for closing off the
underside of the upper fairing.
2) Before cutting of the rear part of the fairing, I put some tape on
the side of the aircraft where the fairing was going to touch, and put
two layers of bid over the tape. Then I mounted the wing root fairings
at the correct place and waited for the bid to cure. The upper and lower
fairing then form a triangle with this bid. This is necessary to
maintain the shape and alignment of the wing root fairings after you cut
the rear part off.
3) When planning the cut, make sure that the cut is somewhat slanted to
the rear (seen from the ac). This is to allow derigging without jamming
against the rear fairing (which stays attached to the aircraft).
4) I made a small extension on the trailing edge of the flap under the
fairing, so it overlaps the cut between the front and rear part of the
fairing. This to close off the gap, and to make sure that the flap can
not "catch" the rear fairing when you lower the flaps.
5) I did not attach any part of the upper fairing to the flaps, but just
let the flaps close against the fairing. If you are going to let the
flaps close against the fairing, you might notice that the seam between
the flap and fairing looks a bit weird because of the curved side of the
fairing. (Taste differs, but I found it looking weird). So I decided to
put some bid between the wing and fairing so I could make a straight
edge, so the flaps look rectangular again. To make a straight edge, it
helps quite a bit if you sacrificy the pointy end of the fairing. I just
cut it off so I could place the entire edge closer to the fuselage.
Quite a bit of the flaps is now overlaid by the fairing and "straight
edge overlap", and if you lower the flaps this will for sure create a
bit of turbulence and drag. We never discovered any negative effects of
this, and maybe the extra drag just makes the flaps more effective.
6) The rear portion of the fairing is attached to the fuselage with
three screws (with anchor nuts inside the fuselage). It looks like this
is enough. I used two small patches of bid on the inside just to give
the rivets some grip.
7) Clean up everything. I made a small flange on the rear fairing so the
front fairing overlaps this, to eliminate the gap. I closed off the
front of the rear fairing, so if the flaps are lowered the rear fairing
doesn't become a wind sock. Fill all the pointy seams with flox. I
trailer the aircraft home after every flight, so I made sure that the
fairings don't flutter when the wings are on the trailer and are
subjected to a very strange angle of attack, by stiffening up some
critical parts.

Frans