Roll
model inverted.
A. Slight
down elevator required for level flight—no adjustments.
B.
Significant down-elevator required to sustain level flight—move CG backward.
C. No
down-elevator required to sustain level flight—move CG forward.
Proper CG: Method B
From
level flight, roll model to knife-edge.
A. Model
falls without dropping nose or tail—no adjustments.
B. Nose
drops—move CG backward.
C. Tail
drops—move CG forward.
Engine thrust up/down
From
level flight out around 100 yards, pull to a vertical climb directly in front
of you, release sticks and observe deviations.
A. Model
continues straight up—no adjustments.
B. Model
pitches toward wheels—decrease down thrust.
C. Model
pitches toward canopy—increase right thrust.
Engine thrust- left/right
Fly model
straight and level into the wind and pull vertical.
A. Model
continues straight up—no adjustments.
B. Model
veers left—increase right thrust.
C. Model
veers right—decrease right thrust.
Knife-edge flight—pitch
Fly model
into wind, maintaining knife-edge flight with minimal rudder. Do this from each
direction.
A. Model
continues on knife edge without deviation—no adjustments.
B. Model
pitches toward landing gear—mix in up-elevator with rudder.
C. Model
pitches toward canopy—mix in down elevator with rudder.
Knife edge flight—roll
Fly model
into wind. Do this from each direction, maintaining knife-edge flight with
minimal rudder.
A. Model
continues on knife edge without deviation—no adjustments.
B. Model
tries to roll—mix in opposite aileron with rudder.
Aileron differential
Fly model
level heading into the wind or downwind. Pull to a 45-degree climb, and roll
with aileron.
A. Model
rolls without yaw—no adjustments.
B. Model
exits yawed in opposite direction of roll—increase differential. Increase up
throw on aileron.
C. Model
exits yawed in direction of roll—decrease differential. Decrease up throw on
aileron.