2.17 Install the elevator control horn. Locate the angled
elevator control horn white plastic stiffeners and glue them to the
top and bottom of the right elevator using contact cement. The
rough sides glue against the elevator surfaces - the smooth sides
are exposed. Using a 1/16" drill, drill holes for the elevator control
horn plate by first marking the holes using the control horn as a
template. Your control horn will be mounted on the BOTTOM OF THE
RIGHT ELEVATOR, and the clevis holes should be in line with the
center of the hinge slot. Using two 1/2" X 2-56 screws provided,
mount the control horn and its backplate to the elevator. STAB
WHITE PLASTIC
STIFFENER
HINGE
AREA IN
DETAIL
HORN BACK PLATE
TOP
VIEW
HORN ON BOTTOM
OF RIGHT ELEVATOR
CENTER CLEVIS HOLES CROSS SECTION
WITH CENTER OF HINGE OF ELEVATOR
ELEVATOR
WHITE PLASTIC
STIFFENER
FIGURE 11 - INSTALLING THE ELEVATOR CONTROL HORN
SLITTHE HINGE
ON THE RIGHT
SIDE OF RUDDER
GLUE PLASTIC
STIFFENERS ON
EACHSIDE
INSERT TWO
1.25" DOWELS
MOUNT CONTROL HORN
ONLEFTSIDEOF
RUDDER
LOCATE HINGE
12 FLUTES FROM
LEADING EDGE
HORN
WHITE PLASTIC
STIFFENERS
BACKPLATE
RIGHTSIDE
FIGURE 12 - VERTICAL FIN AND RUDDER
REAR VIEW
FIN AND RUDDER
2.18 The fin and rudder are a single piece, just as the stab and elevators are. Select a flute to be used as the rudder
hinge that is approximately 12 flutes back from the leading edge of the vertical fin (see illustration) and proceed to "slit" the
flute on THE RIGHT SIDE OF THE FIN in the same fashion as you crafted the hinge for the stab. Once slit, remove the
excess AirCore material with a sharp razor or hobby knife up to the inner walls to make a good hinge and check its function
by bending it back and forth.
2.19 Locate the two (2) 1.25" X 3/16" dowels for the rudder and insert them into flutes as shown in the illustration.
Sand "flats" in them to prevent them from making protrusions in the AirCore.
2.20 Install the rudder control horn. Locate the rudder control horn white plastic (square) stiffeners and glue the rough
sides to both sides of the rudder using contact cement. Using a 1/16" drill, drill holes for the rudder control horn plate by
first marking the holes using the control horn as a template. Your control horn will be mounted on the LEFT SIDE OF THE
RUDDER, and the clevis holes should be in line with the center of the hinge slot. Using two 1/2" X 2-56 screws provided
mount the control horn and its backplate to the rudder.
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