strip of plastic that is used to reinforce the joint on
the inside. Thin CA works well for this. Fill in the
joints with Bondo
®
or a similar filler. When you have
glued the cowl together, cut a small hole where the
prop shaft needs to exit. Slip the cowl onto the
fuselage and see how close you are. Enlarge the
hole as needed to clear the engine thrust washer. As
you continue to fit the cowl to the fuselage and
engine you may need to remove and reinstall the
engine several times. We have found that using a
piece of cardboard taped to the side of the fuselage
is the easiest way to locate the cutout for the engine.
Tape the cardboard to the fuselage and cut an
opening in it to fit your engine, remove the engine,
install the cowl and transfer the cutout to the cowl. If
you go slowly and remove a little material each time
from the cowl, you will be rewarded with a good
looking cowl.
❏
30. To drill the mounting holes in the cowl, extend
the reference lines you drew earlier forward. Use
the dimensions you wrote down earlier to locate the
position of each hole. Drill the holes with a 1/16" bit
and mount the cowl with #6 x 1/2" sheet metal
screws. Enlarge the holes in the cowl only to 3/32"
❏
31. Now is a good time to install your fuel
system. As this will vary widely with the type of
engine used we will offer only a few guidelines. If
you are installing a Gasoline fuel system and are not
familiar with them be sure to use a fuel tank, fuel
lines and other components designed for gasoline.
Install the engine kill switch away from the prop and
hot exhaust. And be sure to carry a fire extinguisher
whenever you fly. As the fuel system is completely
enclosed you will need a refueling valve. You will
need to build a tank floor to mount the tank. The kit
includes a 1/4" x 3/8" x 36" basswood stick to
make rails for the tank floor and for servo rails. The
floor can be made from leftover 1/8" ply material.
❏
32. With the engine and cowl still mounted, let’s
do a quick C.G. estimate. Tape the elevators and
rudder into place. Mount the wing. If you are using
a gas engine you will be nose heavy. Put three
servos on the stab and your radio on the trailing
edge of the wing. This should get you close to
balance. If not you may want to consider putting the
radio in the tail. With other engines place the servos
and radio forward until the balance is close.
❏
33. Mounting holes for the servos have been
provided in the aft fuselage sides, in the fuselage
bottom deck at the aft edge of the wing and in the
fuselage bottom deck aft of the firewall. The photo
shows servos in the tail. You can also install servo rails
cut from 1/4" x 3/8" x 36" basswood, which is
provided in the kit. If using a small 2 or 4-stroke engine,
the servos should be installed just behind the firewall.
❏
1. Cover the model. The original Fly Baby was
covered in fabric and then painted. Coverite 21st
Century pre-painted Fabric was designed for models
of this type and looks great on this airplane. To
duplicate the color scheme on the box you will need
one 15 foot roll of White (COVQ0401), and one six
foot roll of Blue (COVQ0312), Dark Red
(COVQ0303), Orange (COVQ0307) and Cub
Yellow (COVQ0304). There are also many other
color schemes available as well.
❏
2. To install your windshield, cut it from the
butyrate strip using the pattern on the plan. Fit it to
the fuselage. Cut the covering where it will be glued
to the fuselage so that the windshield can be
adhered to the wood.
❏
3. Don’t forget to fuelproof the engine and
tank area.
❏
4. Paint the cowl and landing gear.
FINISHING
24
Summary of Contents for DYFA3030
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