Great Planes Cirrus SR22 .46-55 ARF - GPMA1363 - Manual (Page 29)

29
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. Fuelproof all areas exposed to fuel or exhaust residue.
❏
2. Check the C.G. according to the measurements
provided in the manual.
❏
3. 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.
❏
4. If you still fl y on 72MHz, 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.
❏
5. Balance your model laterally as explained in the
instructions.
❏
6. Use threadlocking compound to secure critical fasteners
such as the set screws that hold the wheel axles to the struts,
screws that hold the carburetor arm (if applicable), engine
bolts, etc.
❏
7. Add a drop of oil to the axles so the wheels will turn freely.
❏
8. Give the control surfaces a quick tug before every fl ight
to make sure all hinges are securely glued in place.
❏
9. Reinforce holes for wood screws with thin CA where
appropriate (servo mounting screws, aileron hatches, etc.).
❏
10. Confi rm that all controls operate in the correct direction
and the throws are set up according to the manual. Checking
the direction should be performed before every fl ight. With
computer radios it is easy to mistakenly change the model.
❏
11. Make sure there are silicone retainers on all the
clevises and that all servo arms are secured to the servos
with the screws included with your radio.
❏
12. 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.
❏
13. Make sure any servo extension cords you may
have used do not interfere with other systems (servo arms,
pushrods, etc.).
❏
14. Make sure the fuel lines are connected and are not
kinked.
❏
15. Balance your propeller (and spare propellers).
❏
16. Check that the spinner bolt is tight.
❏
17. Place your name, address, AMA number and telephone
number on or inside your model. This is an AMA rule (see
page 31 of this manual).
❏
18. Cycle your receiver battery pack (if necessary) and
make sure it is fully charged.
❏
19. If you wish to photograph your model, do so before
your fi rst fl ight.
❏
20. Range check your radio when you get to the fl ying
fi eld. Have an assistant hold the plane while running the
engine at different throttle settings.
FLYING
The Cirrus SR22 ARF is a great-fl ying model that fl ies
smoothly and predictably. The Cirrus SR22 ARF 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.
Fuel Mixture Adjustments
A fully cowled engine may run at a higher temperature
than an un-cowled engine. For this reason, the fuel mixture
should be richened so the engine runs at about 200 rpm
below peak speed. By running the engine slightly rich, you
will help prevent dead-stick landings caused by overheating.
Also, the left opening is closed in the cowl to force cooling
air over the head of the engine. If the engine overheats, the
opening around the muffl er may need to be enlarged slightly
to allow more cooling air to exit.
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.