Opterra 1.2 Manual

Battery Installation and ESC Arming

Battery Selection

We recommend E-ﬂ ite

2200-3200mAh 11.1V 3S- 4S 30C Li-Po batteries. If

using a battery other than those listed, the battery should be within the range

of capacity, dimensions and weight of the E-ﬂ ite Li-Po battery packs to ﬁ t in the

fuselage. Be sure the model balances at the recommended CG.

1. Lower the throttle and leave the trim in the neutral position. Power on the

transmitter, then wait 5 seconds.

2. Push the canopy latch button (A) to release the canopy and remove.

3. For added security apply the loop side (soft side) of the optional hook and

loop tape (B) to the bottom of your battery and the hook side to the battery

compartment.

4. Install a fully charged 2200mAh battery (C) all the way forward in the

battery compartment as shown.

IMPORTANT Adjust the battery position for proper CG accordingly.

5. Connect the battery to the ESC. (the ESC is now armed).

6. Keep the aircraft immobile, upright and level, and away from wind or the

system will not initialize.

• The ESC will sound a series of tones (refer to step 6 of the binding

instructions for more information).

• An LED will light on the receiver.

• The elevons with cycle up and down two times to indicate that the

aircraft has initialized.

If the ESC sounds a continuous double beep after the ﬂ ight battery is

connected, recharge or replace the battery.

7. Reinstall the canopy by inserting the front tab ﬁ rst and pushing down on the

back of the canopy until the latch locks.

CAUTION: Always

keep hands away

from the propeller. When

armed, the motor will turn

the propeller in response to

any throttle movement.