GREAT PLANES S.E.5a Gebruiksaanwijzing - Pagina 19
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CHECK LIST
During the last few moments of preparation your mind may
be elsewhere anticipating the excitement of the first flight.
Because of this, you may be more likely to overlook certain
checks and procedures that should be performed before the
model is flown. 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 motor battery and receiver are
securely mounted in the fuse.
❏
3. Extend your receiver antenna and make sure it has a
strain relief inside the fuselage to keep tension off the
solder joint inside the receiver.
❏
4. Balance your model laterally as explained in
the instructions.
❏
5. Make sure all hinges are securely glued in place.
❏
6. Reinforce holes for wood screws with thin CA where
appropriate (servo mounting screws, cabane
mounting screws, etc.).
❏
7. Confirm 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 with vinyl tape, heat-
shrink tubing or special clips suitable for that purpose.
❏
10. Make sure any servo extension cords you may have
used do not interfere with other systems (servo arms,
pushrods, etc.).
❏
11. Balance your propeller (and spare propellers).
❏
12. Tighten the propeller nut.
❏
13. Place your name, address, AMA number and
telephone number on or inside your model.
❏
14. If you wish to photograph your model, do so before
your first flight.
❏
15. Range check your radio when you get to the flying field.
The S.E.5a EP ARF is a great-flying model that flies
smoothly and predictably. The S.E.5a EP ARF does not,
however, possess the self-recovery characteristics of a
primary R/C trainer and should be flown only by experienced
R/C pilots.
CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If,
while flying, you notice an alarming or unusual sound
such as a low-pitched "buzz," this may indicate control
surface flutter . Flutter occurs when a control surface (such
as an aileron or elevator) or a flying surface (such as a
wing or stab) rapidly vibrates up and down (thus causing
the noise). In extreme cases, if not detected immediately,
flutter can actually cause the control surface to detach or
the flying surface to fail, thus causing loss of control
followed by an impending crash. The best thing to do
when flutter is detected is to slow the model immediately
by reducing power, then land as soon as safely possible.
Identify which surface fluttered (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 fluttered
once, under similar circumstances it will probably flutter
again unless the problem is fixed. Some things which can
cause flutter are; Excessive hinge gap; Not mounting
control horns solidly; Poor fit 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 flutter; Flying an over-
powered model at excessive speeds.
Before you get ready to takeoff, see how the model handles
on the ground by doing a few practice runs at low speeds
on the runway. If you need to calm your nerves before the
maiden flight, shut the motor off and bring the model back
into the pits. Top off the battery, and then check all fasteners
and control linkages for peace of mind.
Remember to takeoff into the wind. When you're ready, point
the model straight down the runway and gradually advance
the throttle. As the model gains speed, allow the tail to come
off the ground. One of the most important things to
remember with a taildragger is to always be ready to apply
right rudder to counteract motor torque. Gain as much
speed as your runway and flying site will practically allow
before gently applying up elevator, lifting the model into the
air. At this moment it is likely that you will need to apply more
right rudder to counteract motor torque. Be smooth on the
elevator stick, allowing the model to establish a gentle climb
to a safe altitude before turning into the traffic pattern.
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