Great Planes Giant U-Can-Do 3D - GPMA1271 - Manual (Page 16)

❏
1. Add servo extensions to the three tail surface servos
so that the total length of each lead will be at least 48"
[1220mm] from the servo to the end of the extension. Using
tape or heat-shrink tubing, securely attach the servo
extension to the servo. Note: Use 36" [914mm] extensions
with Futaba servos to get the 48" [1220mm] length.
❏
2. Trim the covering from the three tail servo holes. Fit the
servos in the fuse, feeding the wires forward to the hatch
opening. Note: The servo output shafts on all the tail servos
go toward the rear of the airplane.
❏
3. Drill 1/16" [1.6mm] holes through the servo mount for
the servo screws. Insert the servo screws and remove
them, then harden the holes with thin CA. Mount the tail
servos using the hardware that came with the servos.
❏
4. Mark the bottom LE of both elevators 1" [25mm] from
the inboard edge. Position the control horns centered over
the marks with the clevis holes perpendicular to the hinge
line. Mark the hole locations on the elevators. Drill 1/8"
[3mm] holes through the elevators at each of the marks.
❏
5. Mount the control horns using the 4-40 x 3/4" [19mm]
SHCS and the nylon backing plate on the top of the elevators.
❏
6. Make a mark 3/4" [19mm] from the bottom of the
rudder. Position the control horn centered over the mark
with the clevis holes perpendicular to the hinge line. Mark
the hole locations on the rudder. Drill 1/8" [3mm] holes
through the rudder at each of the marks.
❏
7. Fit the first control horn onto the rudder with four 4-40
x 1" [25mm] SHCS. Attach the second control horn to the
other side of the rudder with four 4-40 lock nuts.
❏
8. Turn on the transmitter and receiver to center the servo.
Place the elevator arms pointing straight up and the rudder
servo arm straight down. Note: For best performance 1-1/4"
[32mm] long servo arms are recommended.
Mount the Tail Servos
FINAL ASSEMBLY
16