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18
6.
The next step will be to install the top sheeting. Pin the trailing edge to the building board
and pin the ribs aft of the spar. This helps to guarantee a warp free wing.
7.
Dry fit the top sheeting to the center section. It is helpful to moisten the sheeting to allow
it to bend.
8.
Finally, glue the top sheeting. The choice of adhesive is up to you. Some prefer CA for
the speed, others aliphatic, and still others use epoxy or a combination of all three.
NOTE:
When gluing the sheeting, pay attention that
the sheeting contacts the sub-leading edge all along
the join! Use clamps, pins and weights where
needed.
9.
Fit and install the top spoiler cover between the top
sheeting and the trailing edge.
10.
When dry, carefully remove the cross pieces from
the spoiler opening to open it up, then plane/sand the
forward edge of the sheeting and sub-leading edge
completely flat.
11.
Glue the leading edge to the sub-leading ledge. Use an adhesive that sands easily.
12.
When dry, plane/sand the leading edge to the proper contour using the provided template
as a guide.
13.
Bore a 4-mm (~3/16”) hole in the center of the leading edge in which to mount the wing
hold down pin. Install the short 4-mm (~3/16”) carbon fiber pin using CA, or even
better, epoxy.
14.
Trial fit the wing to the fuselage. When the boom is inserted, it will be necessary to
shorten the nylon wing bolt to approximately 17 cm. (~11/16”) to clear the boom.
Installing the Spoiler
The spoiler disrupts the airflow over the wing, which results in less lift. The plane, naturally,
descends more rapidly. When deployed, some elevator compensation may be required.
The spoiler on the
Samba EVO
is operated by a small servo (KST X08 (9 g.), HS-40, Dymond
D47 or similar 4 g.) in the wing center section. The kit includes laser cut plywood mounting
trays specifically designed for the KST X08 and Dymond D47.
HINT
IF USING ALIPHATIC (WHITE
GLUE), DO YOURSELF A
FAVOR AND REMOVE ANY
SQUEEZE OUT BEFORE IT
HARDENS!
Figure 25: Leading Edge Pinned and Taped