Elevator Control System Installation (Pull-Pull Option) - Model Tech Yak 54 Assembly Instructions Manual

ElEvaTor CoNTrol sysTEM iNsTallaTioN (Pull-Pull oPTioN)

q (2) Stranded Cables
q (2) M3 x 70mm Threaded Rods
q (4) Nylon Adjustable Control Horns
q (4) Threaded Couplers
q (4) Z-Bend Couplers
q (4) Metal Clevises - 2mm Thread
q Thin C/A
q #  Phillips Head Screwdriver
q Wire Cutters
q Adjustable Wrench
q Needle Nose Pliers
q Modeling Knife
q Electric Drill
IMPORTANT This section details the installation of the pull-pull elevator control system. Use this option if you are using a lighter
weight engine or you simply want to use the pull-pull control system for improved control authority.
sTEP 1: iNsTalliNg ThE ElEvaTor sErvos
IMPORTANT Both elevator servos and control linkages are mirrored to ensure the highest degree of accuracy between the right
and left sides, therefore, you will need to either plug each elevator servo separately into your receiver and use a transmitter mix
to make both servos move the same direction, or you will need to use a Y-Harness with an electronic reverser to make both servos
move the same direction.
sTEP 2: iNsTalliNg ThE ElEvaTor CoNTrol horNs
-3/6"
(30mm)
you'll NEEd ThE folloWiNg ParTs froM ThE KiT:
q (8) Crimp Collets
q (4) M3 Flat Washers
q (4) M3 Lock Nuts
q (4) M2 Hex Nuts
q () Heat-Shrink Tubing
you'll NEEd ThE folloWiNg Tools aNd suPPliEs:
q /6" (.6mm) and 5/64" (2mm) Drill Bits
q Straight Edge Ruler
q Pencil
q Masking Tape
q Airplane Stand
q Heat Gun
q Install one elevator servo into each outer rear servo mounting hole in the
plywood servo tray, making sure to drill /6" (.6mm) diameter pilot holes for
the servo mounting screws.
IMPORTANT Note the orientation of the servos. When installed, both servo
output shafts should be toward the back of the fuselage.
q Cut away the covering material from over the top and the bottom of the
elevator control horn mounting hole in one elevator half. The control horn
mounting hole is located 7/8" (22mm) out from the inside edge of the elevator
half and 3/8" (0mm) back from the leading edge of the elevator half.
q Thread one 3mm lock nut onto one M3 x 70mm threaded rod so that the
base of the lock nut is -3/6" (30mm) away from the end of the threaded rod.
Page 25