
17
FLYING
The Great Planes ElectroStik EP ARF is a great-flying model
that flies smoothly and predictably.The ElectroStik 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)rapidlyvibratesupanddown(thuscausingthenoise).
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
checkingalltheservogrommetsfordeteriorationorsignsof
vibration.Makecertain allpushrodlinkages aresecureand
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; Side-play of wire
pushrods caused by large bends; Excessive free play in
servo gears; Unsecured servo mounting; and one of the
most prevalent causes of flutter; Flying an over-powered
model at excessive speeds.
Takeoff
Before you get ready to take off, see how the model handles
on the ground by doing a few practice runs at low speeds on
the runway. Hold “up” elevator to keep the tail wheel on the
ground. If necessary, adjust the tail wheel so the model will
roll straight down the runway.
Remember to take off into the wind.When you’re ready, point
the model straight down the runway, hold a bit of up elevator
to keep the tail on the ground to maintain tail wheel steering,
then gradually advance the throttle. As the model gains
speed, decrease up elevator allowing the tail to come off the
ground. One of the most important things to remember with
a tail dragger is to always be ready to apply right rudder to
counteractmotortorque.Gainasmuchspeedasyourrunway
and flying site will practically allow before gently applying up
elevator,liftingthe model intotheair.Atthismoment it islikely
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.
Flight
For reassurance and to keep an eye on other traffic, it is a
good idea to have an assistant on the flight line with you.Tell
him to remind you to throttle back once the plane gets to a
comfortable altitude.While full throttle is usually desirable for
takeoff, most models fly more smoothly at reduced speeds.
Take it easy with the ElectroStik EP ARF for the first few
flights, gradually getting acquainted with it as you gain
confidence. Adjust the trims to maintain straight and level
flight. After flying around for a while, and while still at a safe
altitude with plenty of battery power, practice slow flight
and execute practice landing approaches by reducing the
throttle to see how the model handles at slower speeds.Add
power to see how she climbs as well.Continue to fly around,
executing various maneuvers and making mental notes (or
having your assistant write them down) of what trim or C.G.
changes may be required to fine tune the model so it flies
the way you like.
Landing
To initiate a landing approach, lower the throttle while on the
downwind leg.Allow the nose of the model to pitch downward
to gradually bleed off altitude. Continue to lose altitude, but
maintain airspeed by keeping the nose down as you turn onto
the crosswind leg.Make your final turn toward the runway (into
the wind) keeping the nose down to maintain airspeed and
control.Level the attitude when the model reaches the runway
threshold, modulating the throttle as necessary to maintain
your glide path and airspeed. If you are going to overshoot,
smoothly advance the throttle (always ready on the right
rudder to counteract torque) and climb out to make another
attempt. When you’re ready to make your landing flare and
the model is a foot or so off the deck, smoothly increase up
elevator until it gently touches down.Once the model is on the
runway and has lost flying speed, hold up elevator to place the
tail on the ground, regaining tail wheel control.
One final note about flying your model: Have a goal or flight
plan in mind for every flight. This can be learning a new
maneuver(s), improving a maneuver(s) you already know,
or learning how the model behaves in certain conditions
(such as on high or low rates). This is not necessarily to
improve your skills (though it is never a bad idea!), but more
importantly so you do not surprise yourself by impulsively
attempting a maneuver and suddenly finding that you’ve run
out of time, altitude or airspeed. Every maneuver should be
deliberate, not impulsive.For example, if you’re going to do a
loop,checkyouraltitude,mindthewinddirection(anticipating
rudder corrections that will be required to maintain heading),
remember to throttle back at the top, and make certain you