Hangar 9 P-51D Blue Nose 60 ARF - Manual (Page 23)

44 Hangar 9 P-51 Mustang 60 ARF Assembly Manual 45 Hangar 9 P-51 Mustang 60 ARF Assembly Manual
 Step 23
Slide the wire into the pushrod tube from the front of the
fuselage. Connect the Z-bend to the carburetor arm.
Hint : You may need to remove the carburetor arm from
the carburetor. If so, make sure it is installed to provide
equal throw from open to closed.
 Step 24
Thread the clevis back on the wire and connect it to the
servo arm in the hole that worked best for your throttle
operation. Slide the safety tubing over the clevis to prevent
it from opening accidentally. Use medium CA to glue the
plywood pushrod support to the fuselage in a position that
will provide smooth movement of the throttle pushrod.
Note : If you are installing a glow-powered 4-stroke you
can skip to the section on installing the cowling.
Saito FG-20 Ignition
Component Installation
Required Parts
Fuselage assembly Ignition module
Ignition battery Switch harness
Tie wrap, 12-inch (305mm) (4) (not included)
1/4-inch (6mm) foam (not included)
Tools and Adhesives
Drill
Hobby knife with #11 blade
Drill bit: 1/4-inch (6mm)
 Step 1
Prepare the top of the radio box by using your battery as
a guide and drilling four holes in the box using a drill and
1/4-inch (6mm) drill bit. You will also need to make a slot to
pass the lead from the battery through as well.
 Step 2
Wrap the ignition battery in 1/4-inch (6mm) foam. Secure
the battery to the top of the radio box using two 12-inch
(305mm) tie wraps.
 Step 3
Mount the switch for the ignition on the side of the fuselage
opposite that of the radio switch. Mounting the switch
follows the same procedure as the radio switch.
 Step 19
Insert the pushrod into the pushrod tube from the inside of
the fuselage. Attach the clevis to the servo arm.
Hint : It may be necessary to use side cutters to trim
the length of the pushrod so it doesn’t interfere with
the engine. Make sure to leave the pushrod wire long
enough so a bend can be placed in the wire to attach it
to the carburetor arm.
 Step 20
Use the radio system to move the throttle servo to the closed
position. Physically close the carburetor on the engine.
Make sure the direction of the servo and carburetor arm are
working in unison. Use a felt-tipped pen to mark the pushrod
where it crosses the outside hole of the carburetor arm.
 Step 21
Use the radio system to move the throttle servo to the full
throttle position. Move the carburetor to the full throttle
position. Check that the mark on the pushrod wire aligns
with the outer hole of the carburetor arm. If it is off only a
slight amount, you can use the ATV function of your radio
to correct. If the line is too far forward, attach the clevis to
a hole on the servo arm that is closer to the center of the
servo. If it doesn’t move far enough, use a servo arm that
allows you to position the clevis farther from the center of
the servo. Repeat the previous steps if necessary to achieve
the correct amount of throw to operate the throttle on your
engine.
 Step 22
Remove the pushrod and take the clevis off the wire. Use
Z-bend pliers to make a Z-bend in the pushrod wire where
the mark was made in the previous steps. You can use
regular pliers, but Z-bend pliers will provide the best results.