Center of gravity (cg) – E-flite UMX Habu S DF180m BNF User Manual

Page 8

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8

EN

ESC/Receiver Arming, Battery Installation and Center of Gravity

1-

2-

3-

4

-5

Sec.

4

3

2

1

NOTICE: Always keep material or debris away
from the intake. When armed, the rotor will turn in
response to throttle movement and could ingest in
any loose objects.

Arming the ESC/receiver also occurs after binding
as previously described, but subsequent connection
of a fl ight battery requires the following steps.

The SAFE

system will not activate until the

throttle stick is increased for the fi rst time. Once
active, the control surfaces may move noisily on
the aircraft. This is normal. SAFE

technology will

remain active until the battery is disconnected.

1. Lower the throttle and throttle trim to the

lowest settings on your transmitter.

2. Attach the flight battery to the hook and loop
strip

(A) on the battery tray.

Center of Gravity (CG)

The CG location is 37mm back from the leading
edge of the wing at the root. Adjust as needed by
sliding the battery forward or back.

3. Power on your transmitter, then

wait 5 seconds.

4. Connect the battery to the ESC, noting proper

polarity. Keep the plane upright, immobile
and away from wind for 5 seconds to allow
the SAFE

system to initialize. The aircraft

will not initialize until the aircraft is still and
upright.

A successful connection is indicated by:

– A series of tones

– A continuous LED

CAUTION: Always disconnect the Li-Po

battery from the ESC when not fl ying to eliminate
power supplied to the motor. The ESC does not
have an arming switch and will respond to any
transmitter input when a signal is present.

CAUTION: Always disconnect the Li-Po

battery from the ESC when not fl ying to avoid
over-discharging the battery. Batteries discharged
to a voltage lower than the lowest approved
voltage may become damaged, resulting in loss of
performance and potential fi re when batteries
are charged.

37mm

A

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