T-28 Trojan 1.2m Manual
EN
12
T-28 Trojan 1.2m
Flying Tips and Repairs
Consult local laws and ordinances before choosing a ying location.
Range Check your Radio System
Before you y, range check the radio system. Refer to your specic transmitter
instruction manual for range test information.
Oscillation
Once the AS3X system is active (after advancing the throttle for the rst time), you will
normally see the control surfaces react to aircraft movement. In some ight conditions
you may see oscillation (the aircraft rocks back and forth on one axis due to overcontrol). If
oscillation occurs, refer to the Troubleshooting Guide for more information.
Takeoff
Place the aircraft facing into the wind. Set your transmitter in low rate and use
your aps switch to drop the aps to takeoff or “half position”. Gradually increase
the throttle to ¾ and steer with the rudder. Flaps make takeoffs shorter. Pull back
gently on the elevator when the aircraft is up to speed. When airborne, ip your
gear switch to raise your landing gear. Climb to a comfortable altitude and then ip
your aps switch to level the aps.
Flying
For your rst ights with the recommended battery pack (SPMX22004S30), set your
transmitter timer or a stopwatch to 4 minutes, land the aircraft. Adjust your timer for
longer or shorter ights once you have own the model. If at any time the motor power
reduces, land the aircraft immediately to recharge the ight battery. See the Low
Voltage Cutoff (LVC) section for more details on maximizing battery health and run time.
Landing
Land the aircraft into the wind. Use high rate Elevator for landings. Use a small
amount of throttle for the entire descent. Lower the throttle to ¼ and select your
ap switch to deploy the aps to the landing, or full down position. Flaps will make
the landing approach steeper and slower, and allow for a smoother landing. Flip
your gear switch to lower your landing gear. This will slow the aircraft further.
Keep the throttle on until the aircraft is ready to are. During are, keep the wings
level and the aircraft pointed into the wind. Gently lower the throttle while pulling
back on the elevator to bring the aircraft down on its wheels.
If landing on grass, it is best to hold full up elevator after touchdown and when
taxiing to prevent nosing over.
Once on the ground, avoid sharp turns until the plane has slowed enough to
prevent scraping the wingtips.
NOTICE: If a crash is imminent, reduce the throttle and trim fully. Failure to do so
could result in extra damage to the airframe, as well as damage to the ESC and
motor.
NOTICE: After any impact, always ensure the receiver is secure in the fuselage.
If you replace the receiver, install the new receiver in the same orientation as the
original receiver or damage may result.
NOTICE: Crash damage is not covered under warranty.
NOTICE: When you are nished ying, never leave the aircraft in direct sunlight
or in a hot, enclosed area such as a car. Doing so can damage the aircraft.
Low Voltage Cutoff (LVC)
When a Li-Po battery is discharged below 3V per cell, it will not hold a charge. The
ESC protects the ight battery from over-discharge using Low Voltage Cutoff (LVC).
Before the battery charge decreases too much, LVC removes power supplied to the
motor. Power to the motor reduces, showing that some battery power is reserved
for ight control and safe landing.
Disconnect and remove the Li-Po battery from the aircraft after use to prevent
trickle discharge. Charge your Li-Po battery to about half capacity before storage.
During storage, make sure the battery charge does not fall below 3V per cell. LVC
does not prevent the battery from over-discharge during storage.
NOTICE: Repeated ying to LVC will damage the battery.
TIP: Monitor your aircraft battery’s voltage before and after ying by using a
Li-Po Cell Voltage Checker (SPMXBC100, sold separately).
Repairs
Thanks to the EPO material in this aircraft, repairs to the foam can be made
using virtually any adhesive (hot glue, regular CA, epoxy, etc). When parts are not
repairable, see the Replacement Parts List for ordering by item number. For a listing
of all replacement and optional parts, refer to the list at the end of this manual.
NOTICE: Use of CA accelerant on your aircraft can damage paint. DO NOT handle
the aircraft until accelerant fully dries.
Center of Gravity (CG)
back from front of the
wing saddle
83mm +/- 19mm
The CG location is measured along the mold line on the bottom of the wing. The
recommended starting location is 83mm back from the front of the wing saddle.
This CG location has been determined with the recommended Li-Po battery
(SPMX22004S30).
WARNING: Install the battery but do not arm the ESC while checking the
CG. Personal injury may result.
TIP: Measure the CG with the aircraft inverted.