Stage 8: Attaching The Lower Wing - Model Airways SOPWITH CAMEL F.1 Instruction Manual

STAGE 8: ATTACHING THE LOWER WING AND UNDERCARRIAGE
Tie off the ailerons to avoid damaging them
and glue the lower wing into the slots
under the fuselage. There should be a space
forward of the front spar through which the
aileron cable will pass.
Referring to Fig.33, orient the struts
(CAF70) left and right (they slant inward
to the fuselage, and drill a #69 hole
through the lower end of each front strut.
Glue an eyebolt in each hole, ring to the
inside, and file off any of the shaft that
protrudes out the other side. Referring to
Fig.31, drill three #69 holes under the
fuselage and glue in eyebolts for the
undercarriage bracing. Drill two additional
holes through CAF03 and glue in eyebolts
that will later serve as aileron cable guides.
Trim the eyebolt shafts so they do not
protrude outside the fuselage.
Using sheet aluminum from a soda or beer
can, cut out a piece 3/4" x 1 1/8". Steel
wool off the paint and varnish and drill a
#69 hole dead center. Line this hole up
with the one in the center of the Axle
(CAF69). Pin it in place with an eyebolt so
the short edges touch the Axle hinges, then
bend down the long edges to wrap over the
outer Axle supports. Now glue it and the
eyebolt in place. See Fig.33.
Parts List For Stage 8
CAF69 Axle
CAF70 L/R Landing gear struts
W042 Turnbuckles
WP1227 Bungee cord
WP1205 Bracing wire
WP0434B Rigging eyes
Aileron fairleads
not supplied Axle cover
Slip the struts over the Axle and secure by
wrapping about three turns of WP1227
around each end as in Fig.34. Temporarily
secure the struts to the Axle with a rubber
band. Fit this assembly to the fuselage so
that the front strut tops attach at Frame "A"
and the rear tops fit between the lower
wing ribs and the fuselage to attach at
Frame "C." Note the holes through the top
parts of the front struts. Drill through these
into Frame "A" and secure each with an
eyebolt. Fig.35. Check the alignment, then
glue into place. From underneath, make
sure the Axle and struts fit tightly together,
then glue them together.
Using a turnbuckle at each eyebolt on the
undercarriage, use WP1205 to rig the
20
1 each Britannia casting
1 each Britannia castings
3 Britannia castings
Tan nylon cord
Metal-gray thread
8 Brass eyebolts
2
1 Soda can, aluminum
bracing wires. Wires run from the strut
eyebolts back to the opposite side of the
fuselage and from the Axle eyebolt straight
up to the eyebolt in the center of the
rudder bar support.