Be careful when heating the covering not to twist
the control surfaces. Should a surface develop a
twist it can be easily removed by GENTLY
twisting while applying heat. Apply the decals
after the covering has been corrected.
CONTROL THROWS
Double check all controls move in the proper
direction
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 3/4-inch up / down
Rudder 1 ½- inch right / left
Aileron 3/8-inch up / down
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 FUN-50 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 FUN-50 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
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