13
Flaps retrofit:
If you want to retrofit the flaps, it should be done before the whole model is assembled.
The flaps are driven by a single servo, with its lever in the center of the wing. The servo cable is routed
together with the aileron servo cables to the receiver.
Cut the flaps off the wing, following the two
pictures below.
Make the first cut from the bottom, 35 mm from
the wing trailing edge (25 mm at the aileron)
vertically to the depth of 6 mm. The second cut
from the top should be made 30 mm from the
wing trailing edge (20 mm at the aileron) obliquely
until the first incision. Grind a leading-edge profile
on the created flaps. Fix the flaps with pins in
their original position. For each hinge two levers
are cut into the wing with another lever between
them in the flap. Cut the hinges about 10 mm
from the side edges of the flaps.
Important:
The levers on the inner flaps, close to
the fuselage, are for the linkage, so the right-angled levers must be installed there.
Slide longer pieces of wire ø 1 mm through both hinges of each flap before gluing the hinges. The wire
is used for correct alignment of the flaps and hinges, the axis of rotation of the flaps should be parallel
directly above the transition between wing and flap. If everything fits, glue the hinges with thin CA.
Pull the wires out of the hinges and cut the wire into short pins, which are put back in the hinges and
glued with thicker CA from the side.