K
IT
: P/N 938-02000-01
K
IT
I
NSTRUCTIONS
: P/N 063-09019-01
R
EVISION
:
C
D
ATE
:
8/28/08
P
AGE
:
10
2008
©
Copyright Glasair Aviation LLC, Arlington, Washington All rights reserved
Step 4: Fill and Contour the Edges of the NACA
Scoop
To harden the edges of the fuselage where the NACA scoop cutout
has been made and to provide a solid basis for contouring these
edges as required, it is necessary to route out some of the foam
core of the fuselage shell all the way around the perimeter of the
scoop cutout. Use a utility knife or a metal pick to gouge out a
trough between the inner and outer laminates approximately ¼”
deep all the way around the cutout. At the aft edge of the cutout,
increase the depth of this trough to about ½”.
Once you have removed the foam core as described above, fill the
resulting troughs back in with Bondo or resin/Q-cell paste mix or
some other similar body filler. After this has cured, sand a smooth,
square corner into the upper and lower edges of the cutout, sand
and fill as necessary to achieve a smooth blending of the fuselage
side into the NACA scoop portion of the air box, but don’t worry that
there remains a fairly steep slope at this point from the fuselage
side into the scoop.
After the scoop has been sanded to your satisfaction, you can
primer or re-gelcoat the exposed surfaces.
Completed: Left [ ] Right [ ]
Make this radius ¼” diameter
(reverse airfoil shape)
Sand / blend corners into
fuselage with 1/8” radius
