Top Flite TOPA0220 - Manual (Page 51)

extended, you’ll need to add a little more throttle
than usual to overcome the increased drag and
maintain airspeed. Mind your fuel so you can make
as many attempts as required so you can bring your
baby home safely.
Have a ball! But always stay in control and fly in
a safe manner.
GOOD LUCK AND GREAT FLYING!
CAUTION (THIS APPLIES TO ALL R/C
AIRPLANES): If, while flying, you notice any unusual
sounds, such as a low-pitched “buzz,” this may
indicate control surface
flutter. Because flutter can
quickly destroy components of your airplane, any time
you detect flutter you must immediately cut the
throttle and land the airplane! Check all servo
grommets for deterioration (this may indicate which
surface fluttered) and make sure all pushrod linkages
are secure and free of play. If the control surface
fluttered once, it probably will flutter again under
similar circumstances unless you can eliminate the
free-play or flexing in the linkages. Here are some
things which can cause flutter: Excessive hinge gap;
Not mounting control horns solidly; Poor fit of clevis
pin in horn; Side-play of pushrod in guide tube caused
by tight bends; Poor fit of Z-bend in servo arm;
Insufficient glue used when gluing in the elevator or
flap joiner wire; Excessive
play or backlash in servo
gears; and Insecure servo mounting.
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