Great Planes Lancair 60 ARF - GPMA1347 - Manual (Page 35)

hinges are acceptable if determined to be adequate for the
intended use.
Clevis (steel, excluding heavy-duty ball links) and
attachment hardware should be heavy duty 4-40 threaded
rod type. 2-56 threaded size rod is acceptable for some
applications (e.g. throttle). Clevis is to have lock nuts and
sleeve or spring keepers.
Propeller tips should be painted or colored in a visible and
contrasting manner so as to increase the visibility of the
propeller tip arc.
❏
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 stuffing them into place
with foam rubber is not sufficient.
❏
4. 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 thread-locking 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), screw-lock pushrod
connectors, etc.
❏
7. Add a drop of oil to the axles so the wheels will
turn freely.
❏
8. Make sure all hinges are securely glued in place.
❏
9. Reinforce holes for wood screws with thin CA
where appropriate (servo mounting screws, cowl
mounting screws, etc.).
❏
10. Confirm that all controls operate in the correct
direction and the throws are set up according to the
manual.
❏
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. Secure the pressure tap (if used) to the muffler with
high temp RTV silicone, thread locking compound
or J.B. Weld.
❏
15. Make sure the fuel lines are connected and are not
kinked.
❏
16. Balance your propeller (and spare propellers).
❏
17. Tighten the propeller nut and spinner.
❏
18. Place your name, address, AMA number and
telephone number on or inside your model.
❏
19. Cycle your receiver battery pack (if necessary) and
make sure it is fully charged.
❏
20. If you wish to photograph your model, do so before
your first flight.
❏
21. Range check your radio when you get to the
flying field.
The Lancair is a great-flying model that flies smoothly and
predictably. The Lancair does not, however, possess the
self-recovery characteristics of a primary R/C trainer and
should be flown only by experienced R/C pilots.
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.
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 joiner wire;
Excessive
play or backlash in servo gears; and Insecure servo
mounting.
Fuel Mixture Adjustments
FLYING
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 (that’s why it’s called a
check list!).
CHECK LIST
35