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Mountain Models P-51 Mustang Assembly Manual page 31

1/12 scale electric park flyer

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ELECTRONICS:
1.
Push the motor/gearbox assembly onto the motor stick as far back as it will go. Secure the gearbox to the stick using a small screw
through the top. Drilling a hole with an undersized bit for the screw will help keep the plastic or plywood mount from splitting.
2.
Push the motor stick through the holes in F1 and F2. The back of the motor stick should just be sticking through the back of F2,
about 1/16" or so. Do NOT glue it in yet. Place the cowling on the front and then your pro/spinner. Pull/push the motor stick
forward and aft until the spinner has about 1/16" clearance with the cowling. When you have it in place, use some thin CA to
secure the stick in place at the back of F2. Remove the prop/spinner and cowling and finish securing the motor stick to F1 and F2.
Place a fillet of thick CA around the joint between the motor stick and F1.
3.
Hook up your ESC to your motor and push it and the wires through the opening in F1.
4.
Turn the fuselage upside down and install the servo mounts in the fuselage as shown in the image below. The position in the image
is where we have mounted ours, but there is some room to move them forward, depending on the equipment you choose. Glue in
the rear servo mount first using thin CA. Use a servo to position the front servo mount and glue it in place using thin CA.
5.
Mount your servos as shown, using the mounting screws that came with your servos. After they LIGHTLY screwed in, remove the
screws and servos. Reinforce the screw holes in the balsa with thin CA. After this has dried COMPLETELY, reinstall your servos
with the screws.
6.
Install the Micro servo connectors on the servo arms and press the servo arms onto the servos.
7.
Using a sharp X-Acto blade, create slits in the fuselage for the pull-pull thread to go through as shown on the plans.
8.
When rigging the pull-pull lines, be careful not to "wrap" other lines as this can cause a not so smooth operation of the control
surfaces.
9.
Tie one end of the pull-pull thread to a cotter pin. Press the cotter pin through the bottom elevator slit and run the cotter pin back to
the servo connector. Push the cotter pin about half way through and lightly tighten the screw. Cut the pull-pull thread about 2" past
the control horn.
10. Repeat step 8 for the other side of the elevator control horn.
11. Holding the elevator in neutral position, tie the loose end of the pull-pull thread to the control horn, getting the line as tight as you
can while keeping the elevator at neutral. Repeat for the other side of the control horn.
12. Adjust the pull-pull cables at the servo arm as needed to get tight lines on both sides when the elevator is neutral
13. Repeat steps 9 through 11 for the rudder control horn and servo.
14. Turn on your radio and make sure the servo horn and horns are centered. Secure the horns with the servo horn screws.
15. Glue the battery mount in place at this time. Using thick CA.
16. Apply one side of the adhesive backed Velcro the battery mount.
17. Cut off enough of the other side of the adhesive backed Velcro and apply it to the back of your receiver. The Velcro that is left is
for your battery. The receiver will be mounted on the front section of the battery mount.
18. Cut out the slot in the top of the wing (W31) for the servo wires to come through. Run a piece of thread down the hole, through the
wing, and out the servo mount hole in the wing. Do this for both sides. Tie the thread to your servo wires and pull them through the
wing. Install the aileron servos in the wings with the servo arm to the back of the wing. Remove the screws and drop thin CA into
the holes to strengthen them. After the CA has thoroughly dried, reinstall the servos and screws. Install a mini servo connector on
each servo arm.
Copyright 2005-2011 Mountain Models
31

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