arf EXTRA300L, Instruction Manual, Page: 31 / 37

leading edge of the wing at the root. More experienced pilots may want to set the
CG further aft for more 3D capability. Varying weights of engines and radio gear
will dictate how you should install each. The batteries can easily be located pretty
much anywhere in the fuselage.
Note: The best way to check your balance is to trim for level flight at about 1/2 to
3/4 throttle and then roll inverted. The aircraft should maintain level flight with very
little to no down elevator input. If the aircraft climbs when inverted then you’ve
probably got your CG too far aft. If the nose drops more than slightly, then you are
most likely nose heavy.
Recommended control surface deflections:
Low Rate High Rate
Elevator 15 degrees 45-50 degrees
Rudder 25 degrees 40-45 degrees
Ailerons 25 degrees 35-40 degrees
FINAL ASSEMBLY AND PRE-FLIGHT INSPECTIONS
1. Before arriving at your flying field, be sure all your batteries are properly charged
and all radio systems are in proper working order.
2. Install the wings onto the fuselage being careful to align the wing tube with the
wings and not force it. The wing tube may be initially tight but will loosen some
with use. Guide your servo wires into the fuselage openings and connect to the
proper aileron channels. Servo clips are recommended. Once you have the wings
fully seated in the fuselage tighten the wing bolts inside the fuselage.
3. Side force generators Assembly.
Cut the wing film needed to be install the SFG. Fixed the SFG Use M3X18 hand
bolts and balsa sheet.