21
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 receiver is securely mounted in the
fuse. Simply stuffi ng it into place with foam rubber is
not suffi cient.
❏
3. Extend your receiver antenna.
❏
4. Balance your model
laterally
as explained in the
instructions.
❏
5. Use threadlocking compound to secure critical
fasteners such as the set screws that hold the wheel
axles to the struts, screw-lock pushrod connectors, etc.
❏
6. Add a drop of oil to the axles so the wheels will
turn freely.
❏
7. Make sure all hinges are
securely
glued in place.
❏
8. Reinforce holes for wood screws with thin CA where
appropriate (servo mounting screws, wheel pants
screws, etc.).
❏
9. Confi rm that all controls operate in the correct direction
and the throws are set up according to the manual.
❏
10. 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.
❏
11.
Make sure any servo extension cords you may have
used do not interfere with other systems (servo
arms, pushrods, etc.).
❏
12.
Balance your propeller (and spare propellers).
❏
13.
Tighten the propeller nut and spinner.
❏
14.
Place your name, address, AMA number and
telephone number on or inside your model.
❏
15.
If you wish to photograph your model, do so before
your fi rst fl ight.
❏
16.
Range check your radio when you get to the fl ying fi eld.
FLYING
The Cirrus SR22 ARF is a great-fl ying model that fl ies
smoothly and predictably. The SR22 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
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 necessary, adjust the nose wheel so the model
will roll straight down the runway. If you need to calm your
nerves before the maiden fl ight, shut the motor down and
bring the model back into the pits. Top off the battery, 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, then gradually advance
the throttle. Gain as much speed as your runway and fl ying
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 engine
torque. Be smooth on the elevator stick, allowing the model
to establish a
gentle
climb to a safe altitude before turning
into the traffi c pattern.
This model belongs to:
Name
Address
City
, State
, Zip
Phone Number
AMA Number
Содержание SR22 Turbo
Страница 24: ......
