GREAT PLANES YAK-55M Yakovlev, Instruction Manual

11

INSTALL THE RADIO SYSTEM

Install the Elevator Servo

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1. Use adhesive-backed hook and loop material to mount 

the receiver to the aft end of the battery tray former. Connect 
the ESC to the receiver.

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2. Cut the covering away from the elevator servo opening 

on the right side of the fuselage, in front of the stabilizer. 

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3. Install a 16" [406mm] servo extension to the elevator 

servo. Secure the extension to the lead with tape, a piece of 
shrink tube or some other method to keep them from coming 
unplugged.

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4. Install the elevator servo into the servo opening following 

the same procedure used to install the aileron servos. Connect 
the servo to the receiver, install and center the servo arm.

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5. Thread a nylon clevis 16 turns onto a 

2-56 x 10" 

[254mm] wire pushrod

. Connect the clevis to a nylon 

control horn. Using the elevator pushrod, position the control 
horn in line with the servo arm. When positioned properly 
the control horn will rest on a hardwood plate in the elevator. 
Mark the location of the mounting holes onto the elevator. 
Drill a 3/32" [2.4mm] hole on the marks, drilling through the 
elevator. Attach the control horn to the elevator using two 
2-56 x 5/8" [16mm] machine screws and the control horn 
back plate. 

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6. Slide a silicone clevis retainer over the clevis. With the 

elevator servo and the elevator centered, mark the elevator 
pushrod where it crosses the elevator servo arm. Make a 
90° bend at the mark. Cut the pushrod 3/8" [9.5mm] past the 
bend. Attach the pushrod to the elevator servo arm with a 
nylon Faslink.