©2019 Moustache Model Works, LLC
17
20cc DHC
-
2 Beaver Instruction Manual
49.
Cut a length of the ½
”
(13mm) triangle
stock to 21
5/8”
(549mm) and glue in
place on the trailing edge of the wing.
52.
Assemble the flap and aileron hatches/servo mounts. The hatches are 1.5mm plywood
and the servo mounts are 3mm lite ply.
a.
Two sizes are provided to accommodate either standard
-
sized or mini servos.
b.
Doublers are included to provide more meat for the servo mounting screws. For mini
servos, the doublers fit on the top of the mounts; for standard servos, the doublers fit
on the bottom of the mounts.
c.
The angle braces fit on both sizes of mount.
d.
The orientation of the hatches is marked on the inside of the hatches.
48.
Cut a hole in the trailing edge for the
flap pushrod. This hole needs to be
about ¼
”
–
5/16”
(6
-
8mm) wide and
about
3/8”
(9
-
10mm) tall, located al-
most to the upper trailing edge sheet-
ing. See plans for spanwise location;
on the left wing the hole is centered
10”
(254mm) from the root, and on the
right wing it
’
s centered 11 ¾
”
(298mm)
from the root. You may want to wait
until the flaps are finished before com-
pleting this step.
50.
Sand the upper surface of the triangle
stock to match the curvature of the
upper surface of the wing. You may
want to use masking tape to protect
the wing while rough sanding.
54.
Use the hatches as guides to mark
the locations of the hatch retaining
screws. Drill pilot holes for the screws
using a
.050”
–
1/16”
bit.
51.
Drill and file the hole for the flap push-
rod into the triangle stock.
53.
Glue the 1mm wing hatch spacers into
place. These spacers ensure the
outer surfaces of the flap and aileron
hatches are flush with the wing sur-
face.
55.
Mount the hatches using 2mm x
10mm button head screws.
