the hole for the screw that will hold the wing to the fuselage.
Use pliers to crimp the lug onto the cabane strut.
Do the same for other three. When done,
gently remove the wing. Take each strut
and solder the lug to the wire. When
the soldering is done, insert each
strut back into the hardwood
blocks ( 30). Place the wing
back onto the pylon and
onto the cabane struts.
Cut out two
frames ( 41)
and insert them
between the struts
( 31) and ( 32). Glue
them to the struts
with epoxy. After the
glue hardens, remove the
wing and remove the cabane
from the hull. Wrap fiberglass cloth
around the wire struts and the plywood
frame. Saturate the cloth with CA glue and then sand the
At the bottom of the cabane, smear epoxy glue onto the
wires. Insert the cabane wires into the holes in the blocks
( 31). Place the wing back onto the top of the cabane and the
fuselage pylon. Make sure that the wing is still aligned and let
the epoxy cure. After the glue has hardened, use four screws to
attach the wing to the cabane.
Make the Wing Struts
The simplest way to make the struts is to use K&S
Streamline Aluminium Tubes. Cut them to the required
length, flatten both ends of the struts, and bend the ends of the
tubing so that the flat part of the strut is flush with the wing at
one end and with the sponsons on the other end.
Drill the holes in the flat part of the strut. Mount the
wing struts to the wing and to the sponsons. Watch for wing
In the rear of the hull, glue the struts between the stabilizer
and the hull. There is one more thing to do to give this model
a scalelike look. As the plans show, the hull and the sponsons
have antislip corrugated strips on the top surfaces of the
fuselage and sponsons. To simulate corrugation, cut the 1/16
balsa sheet into 1/16 x 1/16-inch strips. Some of them will not
be long enough so you will have to splice them. Before gluing
in place, take each strip and lightly sand it with 100-grit
Seal the balsa with dope or polyurethane sealer and sand
again. Using the plans drawing as a reference, glue the balsa
strips to the hull and to the sponsons.
Painting and Finishing
Use your favorite paint. The seaplane is white except for the
bottom of the hull, the top and bottom of the sponsons, the
wing struts, and the black registration numbers. Use scrap balsa
to make the dummy engine heads and the radiators, and paint
them black. Glue the engine heads to the cowls.
Inside the cockpit frame, glue in the windows. Install all of
the hinges, horns, servos, and pushrods. Solder the connectors
to the motor wires. Solder the servo plugs onto the elevator,
rudder, and the aileron extension wires. Install the motors.
Because the rear motors are smaller, make and glue the false
firewall to the N3 formers.
Connect all of the electrics as shown on the schematic
located on the second plans page. Notice that the three speed
controllers have the red wire lifted. If this is not done, the
speed controllers will not properly work. Install the batteries
and position them so that the model balances on the CG point
as shown on the plans.
To have differential control of the rear motors, you need to
install a V-tail mixer as shown on the schematic. Check the
differential motor control by moving the rudder stick to the
left. The rudder should move left and the rear right motor
should speed up. The opposite will happen when moving the
stick to the right.
Takeoffs are smooth, and the model is a gentle flier. Good
K&S Precision Metals
AMA Plans Service
(765) 287-1256, ext. 507
50-D Model Aviation APRIL 2014
The hull and the sponsons have antislip corrugated strips on the top of their
surfaces to add scalelike detailing.