23
Radio Control
1) I will have completed a successful radio equipment ground
check before the fi rst fl ight of a new or repaired model.
2) I will not fl y my model aircraft in the presence of spectators
until I become a qualifi ed fl ier, unless assisted by an
experienced helper.
3) At all fl ying sites a straight or curved line(s) must be
established in front of which all fl ying takes place with the
other side for spectators. Only personnel involved with fl ying
the aircraft are allowed at or in the front of the fl ight line.
Intentional fl ying behind the fl ight line is prohibited.
4) I will operate my model using only radio control frequencies
currently allowed by the Federal Communications Commission.
5) I will not knowingly operate my model within three
miles of any pre-existing fl ying site except in accordance
with the frequency sharing agreement listed (in the
complete AMA Safety Code).
9) Under no circumstances may a pilot or other person
touch a powered model in fl ight; nor should any part of the
model other than the landing gear, intentionally touch
the ground, except while landing.
CHECK LIST
During the last few moments of preparation your mind may
be elsewhere anticipating the excitement of the fi rst fl ight.
Because of this, you may be more likely to overlook certain
checks and procedures that should be performed before the
model is fl own. To help avoid this, a check list is provided to
make sure these important areas are not overlooked. Many
are covered in the instruction manual, so where appropriate,
refer to the manual for complete instructions. Be sure to
check the items off as they are completed.
❏
1. Check the C.G. according to the measurements
provided in the manual.
❏
2. Be certain the battery and receiver are securely
mounted in the fuse. Simply stuffi ng them into place
with foam rubber is not suffi cient.
❏
3. Extend your receiver.
❏
4. Balance your model laterally as explained in
the instructions.
❏
5. Add a drop of oil to the axles so the wheels will
turn freely.
❏
6. Make sure all hinges are securely glued in place.
❏
7. Confi rm that all controls operate in the correct direction
and the throws are set up according to the manual.
❏
8. Make sure that all servo arms are secured to the
servos with the screws included with your radio.
❏
9. Secure connections between servo wires and
Y-connectors or servo extensions, and the connection
between your battery pack and the on/off switch with
vinyl tape, heat-shrink tubing or special clips suitable
for that purpose.
❏
10. Balance your propeller (and spare propellers).
❏
11. Tighten the propeller nut and spinner.
❏
12. Place your name, address, AMA number and telephone
number on or inside your model.
❏
13. If you wish to photograph your model, do so before
your fi rst fl ight.
❏
14. Range check your radio when you get to the fl ying fi eld.
FLYING
The Extra 330S EP ARF is a great-fl ying model that fl ies
smoothly and predictably. The Extra does not, however,
possess the self-recovery characteristics of a primary R/C
trainer and should be fl own only by experienced R/C pilots.
CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If,
while fl ying, you notice an alarming or unusual sound such
as a low-pitched "buzz," this may indicate control surface
fl utter. Flutter occurs when a control surface (such as an
aileron or elevator) or a fl ying surface (such as a wing or
stab) rapidly vibrates up and down (thus causing the noise).
In extreme cases, if not detected immediately, fl utter can
actually cause the control surface to detach or the fl ying
surface to fail, thus causing loss of control followed by
an impending crash. The best thing to do when fl utter is
detected is to slow the model immediately by reducing
power, then land as soon as safely possible. Identify which
surface fl uttered (so the problem may be resolved) by
checking all the servo grommets for deterioration or signs of
vibration. Make certain all pushrod linkages are secure and
free of play. If it fl uttered once, under similar circumstances
it will probably fl utter again unless the problem is fi xed.
Some things which can cause fl utter are; Excessive hinge
gap; Not mounting control horns solidly; Poor fi t of clevis
pin in horn; Side-play of wire pushrods caused by large
bends; Excessive free play in servo gears; Insecure servo
mounting; and one of the most prevalent causes of fl utter;
Flying an over-powered model at excessive speeds.
Takeoff
If you have access to a smooth, paved runway, we suggest
using it to takeoff, especially for the fi rst few fl ights. Position
the Extra 330S EP ARF onto the runway pointed into the
wind. Slowly advance the throttle stick to half throttle, leaving
the elevator in the neutral position. As the tail rises off the
ground, slowly increase throttle and apply a bit of up elevator
to lift the model into the air. As you become accustomed to the
takeoff characteristics of the Extra 330S EP ARF, they can be
performed quickly only requiring ten to twenty feet of runway
until the model is airborne.
If you do not have access to a smooth runway, the Extra
330S EP ARF can be hand launched. For the fi rst fl ight, it
