Lvc (Low Voltage Cutoff); Center Of Gravity (Cg) Verification - Horizon Fitness hobbyzone Apprentice S2 Instruction Manual

LVC (Low Voltage Cutoff)

LVC is a feature built into your ESC to protect the battery from over-discharge.
When the battery charge is too low, LVC limits power supplied to the motor. The
aircraft will begin to slow and you will hear the motor pulse. When the motor
power decreases, land the aircraft immediately and recharge the flight battery.
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.
NOTICE: Repeated flying to LVC will damage the battery.
Battery Precautions for Flight
• Keep the aircraft close until you are familiar with the flight time.
• Do not fly to LVC (motor pulsing) repeatedly. This may result in battery damage.
• Always disconnect and remove the flight battery when finished flying.
TIP: Monitor your aircraft battery's voltage before and after flying by using a
Li-Po Cell Voltage Checker (SPMXBC100, sold separately).

Center of Gravity (CG) Verification

An aircraft with a correct CG has its weight balanced at a calculated point for
safe and stable flight.
After installing the battery (in the recommended position) and before powering
on the ESC, verify the CG by supporting the aircraft 75.0mm (approximately 3
inches) back from the front edge of the wing, as shown.
TIP: Balance the aircraft on your fingertips near the fuselage under the
wings.
• If the nose goes down, move the flight battery back until the aircraft
balances.
• If the nose goes up, move the flight battery forward until the aircraft
balances.
When flying with correct CG in beginner mode, the aircraft should climb
gradually at full power and fly level at 50%–60% power with no elevator input.
If the aircraft CG is too far forward (nose heavy), up elevator is required to fly
level at 50%–60% power. If the aircraft CG is too far aft (tail heavy), down
elevator is required to fly level.
Adjust the battery position as needed.
11
75mm
3 inches back from the
leading edge of the wing.
Apprentice S 2 1.2m
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EN