CONTROL THROWS
With your radio on, center all trims and adjust the
clevises so all control surfaces are straight. Measure
the control surface movement at the widest part of
each surface. Use the servo horns and bell crank
holes to adjust the control throw. For your first
flights the control throws should be set to the
following:
Elevator 9/16-inch up / down
Rudder 1 ½- inch right / left
Aileron 3/8-inch up / down
Double check all controls move in the proper
direction.
MOTOR SET UP
Be sure the motor is properly broken in using the
manufacture instructions. Set the throttle throw to
shut the motor off when the trim is pulled down and
idles reliably with the trim up. After the motor is
set, run one tank of gas at full throttle, measure how
much time it takes to run the tank dry.
CONGRADULATIONS
you are now
ready for test flights.
Before leaving for the field be sure your batteries
are fully charged and you have all the required
support equipment {fuel, starter, glow driver, ect.}.
Although the GS300 will fly well in wind wait for a
nice day.
At the field have a helper hold the airplane,
following the radio manufactures instructions
perform a range check of the radio. Do this with the
motor off, start the motor and do it again.
Perform
this test
EVERY TIME YOU GO TO FLY!
TRIMING BASIC FLIGHT
The GS300 is NOT a trainer. A true aerobatic
aircraft, it goes only where you point it and will not
recover to level flight without control input. If you
do not have high performance experience seek the
help of someone who does.
Line up on the center of the runway and slowly
open the throttle, using the rudder to maintain
directional control. Once the tail is up apply a little
up elevator and allow the plane to gently lift off the
runway. Keep the climb angle and turns shallow
until you reach a safe altitude. Reduce the throttle to
about 60% power. With the airplane flying away
from you adjust the radio aileron trim tab till the
wing stays level. Turn and line up the plane with
the runway. Adjust the elevator trim till the plane
maintains level flight. Once again with the airplane
flying away from you adjust the rudder trim till the
fuselage tracks straight {it may be necessary to
correct the aileron trim after this procedure}.
Continue to fly and trim until the aircraft is tracking
well, land before the fuel runs out. Carry a little
power on final approach until over the end of the
runway, then cut power to idle, hold the plane just
off the runway till the airspeed bleeds off and the
plane settles on. If the landing is too long add
power go around and try again, don’t try to force it
to the ground.
Now its time to zero out the trims. To do this
measure the control location, center the trim tab on
the radio and adjust the servo horn for large
changes, the control clevis for small changes. For
example if after the flight the rudder is 3/16 inch to
the right, center the radio trim and adjust the clevis
till the rudder once again measures 3/16 right. By
doing this whenever you fly, setting the radio trims
at center will result in a well-trimmed plane.
Increase the control travel, as you become more
familiar with the flight characteristics until loops
take about 50 feet and knife edge can be maintained
with 80% stick deflection. Final roll rate should be
300-360 degrees per second.
If you have followed the procedures in this Manuel
you will now be rewarded with one of the finest
flying sport models available. All primary aerobatic
maneuvers are at your fingertips and the aircraft
will perform them with ease. No further trim work
11
