Great Planes Extra 300S 60 Kit - GPMA0236 - Manual (Page 45)

Make all engine adjustments from behind the rotating
propeller.
The engine gets hot! Do not touch it during or after
operation. Make sure fuel lines are in good condition so
fuel will not leak onto a hot engine causing a fire.
To stop the engine, cut off the fuel supply by closing off the
fuel line or follow the engine manufacturer’s recommendations.
Do not use hands, fingers or any body part to try to stop the
engine. Do not throw anything into the propeller of a
running engine.
Read and abide by the following Academy of Model
Aeronautics Official Safety Code:
General
1. I will not fly my model aircraft in sanctioned events, air
shows, or model flying demonstrations until it has been
proven to be airworthy by having been previously
successfully flight tested.
2. I will not fly my model aircraft higher than approximately
400 feet within 3 miles of an airport without notifying the
airport operator. I will give right of way to, and avoid flying
in the proximity of full scale aircraft. Where necessary an
observer shall be used to supervise flying to avoid having
models fly in the proximity of full scale aircraft.
3. Where established, I will abide by the safety rules for
the flying site I use, and I will not willfully and deliberately
fly my models in a careless, reckless and/or dangerous
manner.
7. I will not fly my model unless it is identified with my
name and address or AMA number, on or in the model.
9. I will not operate models with pyrotechnics (any device
that explodes, burns, or propels a projectile of any kind).
Radio Control
1. I will have completed a successful radio equipment
ground check before the first flight of a new or repaired
airplane.
2. I will not fly my model aircraft in the presence of
spectators until I become a qualified flier, unless assisted
by an experienced helper.
3. I will perform my initial turn after takeoff away from the
pit or spectator areas, and I will not thereafter fly over pit or
spectator areas, unless beyond my control.
4. I will operate my model using only radio control
frequencies currently allowed by the Federal Communications
Commission.
The Great Planes Extra 300S is a great flying semi-scale
sport model that flies smoothly and predictably, yet is highly
aerobatic. The Extra does not, however, possess the self-
recovery characteristics of a primary R/C trainer and should
only be flown by experienced RC pilots. This plane is fully
capable of performing a full range of aerobatics - from
simple loops and rolls to impressive Lomcevaks. The Extra
300S is limited only by your flying abilities and imagination.
Have Fun!
Takeoff on “low” rates if you have dual rates on your
transmitter–especially if you are taking off in a crosswind.
For all models it is good practice to gain as much speed as
the length of the runway will permit before lifting off. This
will give you a safety margin in case the engine quits.
When you initially advance the throttle and the tail begins to
lift, the Extra will begin to turn to the left (due to the torque
of the engine–a characteristic of all taildraggers). Be
prepared for this by applying sufficient right rudder to keep
the Extra running straight down the middle of the runway
(or flying field). The left turning tendency will decrease as
the plane picks up speed. Be sure to allow the tail to rise off
the ground before lifting the model into the air. Depending
on the surface you are taking off from, you will need to
apply little or no up elevator until flying speed is reached.
Don’t hold the tail on the ground with too much up elevator,
as the Extra will become airborne prematurely and may
Takeoff
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 slop-free. If it fluttered once, it will probably
flutter again under similar circumstances unless you can
eliminate the slop or flexing in the linkages. Here are
some things which can result in flutter: Excessive hinge
gap; Not mounting control horns solidly; Sloppy fit of
clevis pin in horn; Elasticity present in flexible plastic
pushrods; Side-play of pushrod in guide tube caused by
tight bends; Sloppy fit of Z-bend in servo arm; Insufficient
glue used when gluing in the elevator joiner wire or
aileron torque rod; Excessive flexing of aileron, caused by
using too soft balsa; Excessive “play” or “backlash” in
servo gears; and Insecure servo mounting.
FLYING
AMA SAFETY CODE (excerpt)
45