Mount Servo And Nose Gear Retract Unit - Sapac Viper Jet MKII Composite Assembly Manual

§ Nose Gear, Retractable (Optional)
Mount Servo and Nose Gear Retract
Unit
Required Parts
o o o o
Fuselage [F]
o o o o
Nose Wheel Servo + Hardware
o o o o
Nose Wheel Retractable Landing Gear Unit
o o o o
Retract Unit Mounting Screws (4)
o o o o Air Line
Required Tools and Adhesives
® ® ® ® Hand Drill
® ® ® ®
Thin CA Adhesive
® ® ® ®
Air Line Cutting Tool
® ® ® ®
Screwdriver
} } } }
The nose wheel steering servo will be seeing a
very large amount of vibration and load during
take-off and landing due to the contact with the
ground through the nose gear. For this reason
we highly recommend the use of a metal gear
servo for nose wheel steering.
} } } }
The servo can be mounted in either location, to
the left or to the right of the center channel.
} } } }
Temporarily fit the servo in the desired location
and drill pilot holes for the servo mounting
screws.
} } } }
Remove the servo and reinforce the pilot holes
with thin CA adhesive.
} } } }
Mount the servo in the final location using the
screws supplied with the servo.
Servo and retract unit mounted and air line
connected
} } } }
Dry fit the nose wheel retractable landing gear
unit in the location provided (as shown in the
22
image below). The unit will fit with the assembly
bolts clearing the plywood at the notches.
} } } }
Once the unit is in place use a hand drill to drill
pilot holes through the plywood at the location
of the mounting tabs. Remove the unit and
reinforce the pilot holes with thin CA adhesive.
} } } }
Before permanently installing the retractable
landing gear unit attach the air line. Temporarily
leave the air line longer than it needs to be; you
will trim it when you complete the installation of
the retract actuator valve.
} } } }
Place the retractable landing gear unit in
location and attach it using the mounting
screws. Ensure you use screws long enough to
go through both layers of plywood. Don't over-
tighten the screws as this may lead to binding in
the retract unit.
Viper Jet MKII Composite