Great Planes Giant Aeromaster ARF - GPMA1225 - Manual (Page 16)

❏ ❏
7. Grind flat spots on the axle where the set screws
in the wheel collar will seat.
❏ ❏
8. Reattach the wheel collars, wheel, and wheel pant.
Apply thread-locking compound to the set screws to prevent
them from backing out.
❏
9. Remove the landing gear hatch covering from the
landing gear mounting area, if you have not already done so.
❏
10. Attach the main landing gear to the fuselage using
four 8-32 x 3/4" [19mm] SHCS, four #8 lock washers and
four #8 flat washers. Use thread-locking compound to
prevent the screws from backing out.
❏
11. Install the landing gear hatch using two #4 x 1/2"
[13mm] sheet metal screws and #4 washers. Remove the
screws and harden the holes with CA. If you wish, the holes
for the screws may be covered using white MonoKote
(TOPQ0204), or white MonoKote trim sheet (TOPQ4104).
❏ ❏
1. Locate one 36" [914mm] threaded pushrod.
Temporarily insert the pushrod into one of the elevator
pushrod guide tubes that is preinstalled in the fuselage.
As done with the ailerons, use the pushrod to position the
large black control horn. Attach the large black control horn
with four #4 x 1/2" [13mm] screws.
❏ ❏
2. Thread a clevis onto the end of the pushrod 14 turns
and snap the clevis into the center hole on the control horn.
❏ ❏
3. Center the elevator control surface and hold it in
place with masking tape.
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4. Use the other end of the pushrod to position the
elevator servo. Mount the elevator servo to the servo mounting
rails using the hardware provided with your servos.
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5. Center the servo with your radio system and attach
a servo arm. Temporarily attach a solder clevis to the servo
arm that is at a 90° angle to the pushrod. As you did with
the ailerons, make a mark where the clevis will be
positioned, leaving 1/8" [3.2mm] inside the clevis.
❏ ❏
6. After marking the pushrod, remove the pushrod
from the fuselage and solder a clevis onto the non-threaded
end following the soldering technique described earlier in
the manual.
❏ ❏
7. Remove the threaded clevis. Slide a silicone
retainer over the solder clevis.
❏ ❏
8. Slide the pushrod through the elevator pushrod
guide tube from the inside of the fuselage so that the
threaded end comes out of the rear pushrod exit aligned
with the control horn.
❏ ❏
9. Connect the clevis to the servo arm inside the
fuselage. Trim off any unused servo arms.
❏ ❏
10. Attach the 4-40 hex nut, silicone retainer, and a
threaded clevis to the other end of the pushrod and snap
the clevis into the middle hole on the large black control
Elevator Servo Installation
SERVO INSTALLATION
16