Rigging The Aileron Control Wires; Finishing Touches - Model Airways CURTISS JN-4D JENNY Instruction Manual

structed the upper wing, do it now. With the
wing rigging completed, you can remove the
support blocks under the lower wings, or
leave them in place for now in the fuselage
holes at Stations 4 and 5. Place a temporary
3/32"-thick wood strip at each end of the
wing to gauge the gap between the fuselage
and wing. This gap is where the actual hinge
pin is located on the real aircraft, so the
outer wing panels do not actually touch the
center wing section or fuselage. However, if
you have already added a spacer on the fake
hinge pins as shown on the plans, the tempo-
rary spacer is unnecessary. Temporarily block
up the ends of the lower wings.
Shape two other wood blocks to the wing
angle next to the fuselage. Move the blocks out
near the wing tips just beyond the outer wing
strut locations, and shim them up until you
have the correct dihedral angle for the wings.
The dihedral is only 1 degree. At the outer
wing strut, the wing is about 3/16" higher than
at the fuselage. Make the blocks long enough
to install some nails or eyebolts in top for
attaching a rubber band to hold the wings to
the block. Glue or nail the block to the board.
Check that the leading edge of the right and
left wing panels are perpendicular to the fuse-
Check the entire model over, and touch up
any remaining stain or paint. Check all rig-
ging cords to make sure they are tight. Stand
back and take a picture.
Congratulations
– the
Jenny
Take a moment to revel in your accomplish-
ment. You've persevered when the going
lage and are in a straight line. You don't want
any sweep back or up with the wings. When
all is correct and secured to the blocks, glue
the fake hinge pins in the fuselage.
Make sure the lower wings are rigidly held
down before attempting to install the upper
wing panels. You don't want anything moving.
See

8. Rigging the Aileron Control Wires

Figure 7-8
See
Figure 7-14.
wires for the aileron control horns. Use the
short turnbuckles (R3A) for these, which
are located at the trailing edge of the
ailerons. Start the control wire at the quad-
rant in the rear cockpit. Feed the wire
around the aft sheaves on the seat rails,
then around the forward sheave and out the
fuselage. About 1-1/4" out from the fuselage
on both sides, add a turnbuckle (R3A short)
in the cord. Continue the cord through the
sheave under the upper wing and to the
control horn.
For the upper control horn wire add a turn-
buckle (R3A short) in the cord. Locate the
turnbuckle over the left edge of the center
wing section, then feed the ends through
the sheaves on top of the wings to the con-

FINISHING TOUCHES

became rough, and your effort has produced
results. You've developed skills you never
knew you had, increased your vocabulary,
and become a time traveler.
is finished! We hope you've enjoyed your voyage and
look forward to flying with you on your next
aircraft modeling project.
for lower wing installation.
First, rig the back brace
37
Aileron control horn on a restored Jenny
trol horns. Finally, add a U-shaped brass
rod as a fairlead for the wire, inserting it into
the center section right rib (you probably
already installed this when building the cen-
ter wing section).
Double check all the rigging to make sure
it is still fairly tight – no drooping of the
nylon cords.
As this is a delicate model, it is suggested
that it be mounted on a suitable baseboard
and housed in a protective glass or plastic
display case – or at least keep it away from
your cat.