Rigging The Interplane Strut Cross Brace Wires, Flying Wires, Landing Wires, Drag Wires, And Kingpost Wires - Model Airways CURTISS JN-4D JENNY Instruction Manual

FIG. 7-10 INTERPLANE STRUT
BRACE WIRES
.010"
GRAY
NYLON
CORD
W22 ON
WING
correct angle. Then, fit the upper wing panel
fake hinge pins in the holes in the center sec-
tion just as you did the lower wing, and the
wing onto the interplane struts
Like before, check all the angles, and when
correct, glue the hinge pins and the inter-
plane strut pins. You will probably need
several jig blocks to hold the wing panels
until you glue them in place.
Leave the lower wings secured to the blocks
until all the wing rigging is completed.
7. Rigging the Interplane Strut Cross
Brace Wires, Flying Wires, Landing
Wires, Drag Wires, and Kingpost
Wires
On a real aircraft, flying wires are tension
wires to prevent the wings from folding up
when flying. Since these wires may have quite
a bit of tension, they are double wires. The
landing wires are the opposite, preventing the
wings from folding down when landing. These
are single wires. Drag wires are fore and aft
wires preventing the wings from folding for-
ward or back.
Brace wires between interplane struts
The fore and aft cross brace
(Figure 7-10):
wires between the interplane struts are single
wires. Rig them first. Turnbuckles (R3B,
long) are at the lower ends.
Flying and landing wires (Figure 7-11):
The double flying wire turnbuckles (R3B,
long) are at the lower wing end. Note that the
inboard flying wires attach to the lower clip
fittings on the fuselage struts at Stations 4
and 5. The single landing wires have turn-
buckles (R3B, long) at the lower ends.
Since the double flying wires lay side by side,
not one on top of the other, when rigging a
single landing wire, run it between the two
flying wires.
There are two drag
Drag wires (Figure 7-12):
wires on each side. One goes from the top of the
rear inboard interplane wing strut to the top of
the nose plate rig eye fitting. The other goes
from the bottom of the front inboard interplane
strut to the bottom of the nose plate rig eye fit-
ting. The turnbuckles (R3B, long) for both the
drag wires are located at the wing ends.
Kingpost wires (Figure 7-13):
not rig the kingpost wires when you con-
FLYING WIRES
W22 ON CENTER SECTION
DOUBLE
FLYING WIRES
R38 LONG
TURN-
BUCKLES
F21 FITTING ON
FUSELAGE AT
STATIONS 4 AND 5
.
(Figure 7-9)
R1 EYES AT NOSE
SIDE PLATES
U-BOLT FAIRLEAD ON RIGHT SIDE
OF CENTER WING SECTION
LOCATE TURNBUCKLES ABOUT 1-1/4"
OUT FROM SIDE OF FUSELAGE
If you did
FIG. 7-11 FLYING & LANDING WIRES
LANDING WIRE – PASS
BETWEEN FLYING WIRES
SINGLE LANDING WIRE
DRAG WIRE (SEE FIG. 7-12)
FIG. 7-12 DRAG WIRES
.010" GRAY CORD
R3B LONG TURNBUCKLES
W22 FRONT EYE
FIG. 7-13 KINGPOST BRACE WIRES
R1 EYES ON WING
ROD
FIG. 7-14 AILERON CONTROL WIRES
LOCATE TURNBUCKLE OVER LEFT
EDGE OF WING CENTER SECTION
QUADRANT (SEE PLAN
SHEET 5 FOR WIRE HOOKUP)
36
SINGLE LANDING WIRES
DOUBLE FLYING WIRES
.010" GRAY CORD
R3B LONG
TURNBUCKLES
STRUT BRACE
(WIRES AT FRONT
WIRE
AND REAR STRUTS
(SEE FIG. 7-10)
ARE IDENTICAL)
DOUBLE FLYING WIRES
W22 ON WING
ATTACH TO SAME W22 EYE AS
INTERPLANE STRUT BRACE WIRE
INBOARD
INTERPLANE
STRUTS
.010" GRAY CORD
R3A SHORT TURNBUCKLES
BACK BRACE WIRES (SAME
BOTTOM AND RIGHT AILERON)
.010" GRAY CORD
R3A SHORT TURNBUCKLES
SHEAVES ON SEAT
RAIL IN COCKPIT
TWO R1 EYES
SHEAVES TOP
AND BOTTOM OF
UPPER WING