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Install the Glow Engine
and Rudder Servo
❏
1. If you have already installed the electric motor skip
ahead to the step 1 on page 21. Install the provided 2-piece
glow engine mount onto the front of the airframe using the
provided #6 x 3/4" [19mm] socket head screws, #6 washers,
and #6 lock washers. Adjust the mount so that it fi ts the width
of the glow engine being used. Be certain to keep the mount
centered on the cross hair marks etched into the fi rewall.
❏
2. Check that the distance from the rear of the engine
mount to the drive washer of the engine is 4-15/16" [125mm].
To achieve this distance with some of the larger 4-stroke
engines, it may be necessary to remove the nose wheel
mount from the upper portion of the engine mount as shown.
Mark the engine mounting holes using the Great Planes Dead
Center Hole Locator (GPMR8130). Remove the engine. Drill
and tap the holes for #6-32 bolts, making sure that the holes
are at a 90° angle to the engine mount. Attach the engine
to the engine mount using the four 6-32 x 1" [25mm] socket
head bolts, four #6 washers and four #6 lock washers. Note:
If using the O.S. 81FS-a 4-stroke engine, you will need to
remove the carburetor extension to allow for clearance of the
fuel lines.
❏
3. Locate the throttle servo and install it as shown, using
the hardware provided with the servo. Bend the pushrod and
adjust it so that the throttle servo can move the throttle arm
through the entire range. Connect the throttle servo to the
receiver and test the motion.
❏
4. The recommended location for the rudder servo when
using a glow engine is on the underside of the plane. This is
done to help balance the plane. If you do not wish to mount
the rudder servo in the recommended glow setup mounting
position on the underside of the airplane, or you are installing
a lightweight engine, a second rudder servo mount has
been provided next to the elevator servo in the fuselage. The
directions for mounting the rudder servo in this position are
located in steps 7-12 in the "Installing the Electric Motor and
Rudder Servo" section.
❏
5. Locate the rudder servo mount on the underside of the
fuselage and remove the covering from the bay as shown.
Attach a 12" [304mm] extension to the rudder servo and run
the lead through the fuselage. Place the rudder servo into the
mounting tray. Mark the mounting holes and, using a 1/16"
[1.5mm] drill bit, drill pilot holes for the mounting screws.
Install the servo screws and remove them. Place two drops
of CA in each mounting hole. Once the CA has cured, install
the servo using the hardware provided with the servo.
19
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