EN
Viper 70mm EDF
10
Post Flight
Flying Tips and Repairs
1
Disconnect the flight battery from the ESC (Required for Safety and battery life).
2
Power OFF the transmitter.
3
Remove the flight battery from the aircraft.
4
Recharge the flight battery.
5
Repair or replace all damaged parts.
6
Store the flight battery apart from the aircraft and monitor the battery charge.
7
Make note of the flight conditions and flight plan results, planning for future flights.
Consult local laws and ordinances before choosing a flying location.
Range Check your Radio System
Before you fly, range check the radio system. Refer to your specific transmitter
instruction manual for range test information.
Oscillation
Once the AS3X system is active (after advancing the throttle for the first time),
the control surfaces will react to aircraft movement. In some flight conditions
oscillation may occur (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 in position for takeoff (facing into the wind). Select low rates
for first takeoff and gradually increase the throttle to full and steer with the nose
wheel. Allow the model to accelerate to flying speed, then pull back gently on the
elevator and climb to a comfortable altitude.
Flying
Always choose a wide-open space for flying. Due to the higher speeds of this
aircraft, it does require more room to fly than average foam models. It is ideal
for you to fly at a sanctioned flying field. If you are not flying at an approved site,
always avoid flying near houses, trees, wires and buildings. You should also be
careful to avoid flying in areas where there are many people, such as busy parks,
schoolyards, or soccer fields.
In flight trimming
During your first flight, trim the aircraft for level flight at 3/4 throttle. Make small
trim adjustments with your transmitter’s trim switches to straighten the aircraft’s
flight path. After landing, adjust the linkages mechanically to account for trim
changes and then reset the trims to neutral. Ensure the aircraft will fly straight and
level with no trim or sub-trim.
Landing
For your first flights with the recommended battery pack (EFLB32006S30), set
your transmitter timer or a stopwatch to 4 minutes. After 4 minutes, land the
aircraft. Adjust your timer for longer or shorter flights once you have flown the
model.
If at any time the motor pulses, land the aircraft immediately and
recharge the flight battery.
See the Low Voltage Cutoff (LVC) section for more
details on maximizing battery health and run time.
Turn the aircraft into the wind and reduce the throttle. Extend the landing gear and
flaps. The flaps will allow the aircraft to slow to a more manageable landing speed
while still maintaining lift. Elevator trim may be necessary to maintain level flight
with the addition of flaps. Use the throttle during the landing approach to control
the rate of descent. Keep the wings level and the aircraft pointed into the wind.
As you approach the threshold of the runway and approximately 1 meter altitude,
decrease the throttle and begin your flare by easing back on the elevator. Continue
back pressure on the elevator to bring the aircraft down gently on the runway.
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 finished flying, 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 flight 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 pulses, showing that some battery power is reserved
for flight 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 flying to LVC will damage the battery.
Tip
: Monitor your aircraft battery’s voltage before and after flying by using a Li-Po
cell voltage checker (DYNF0002, sold separately).
Repairs
Thanks to the EPO foam 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 .
NOTICE:
Use of CA accelerator on your aircraft can damage paint. DO NOT
handle the aircraft until accelerator fully dries.
During your first flight, trim the aircraft for level flight at 3/4 throttle with flaps and
gear up. Make small trim adjustments with your transmitter’s trim switches to
straighten the aircraft’s flight path.
After adjusting trim do not touch the control sticks for 3 seconds. This allows the
receiver to learn the correct settings to optimize AS3X performance.
Failure to do so could affect flight performance.
3 Seconds
In Flight Trimming
