BLH02150 Theory XL FPV Drone Manual

ManualsBrandsBlade ManualsFPV RacingTheory XL 5" FPV Quad BNF Basic Racing Drone

Post-Flight Inspection and Maintenance Checklist

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Cleaning

Make sure the battery is not connected before cleaning. Remove dust and debris with a soft brush or a dry,

lint-free cloth.

Motors Replace the motor when the model will not ﬂ y steady or veers off when doing a climb out.

Wiring Make sure the wiring does not block moving parts. Replace damaged wiring and loose connectors.

Fasteners

Make sure there are no loose screws, other fasteners or connectors. Do not over-tighten metal screws in plastic

parts. Tighten screws so the parts are mated together, then turn the screw only 1/8th of a turn more. Do not use

threadlock on or near plastic parts.

Propellers

Make sure there is no damage to the propellers or other parts that move at high speed. Damage to these parts

includes cracks, burrs, chips or scratches. Replace damaged parts before ﬂ ying.

WARNING: Remove the propellers from the motors prior to performing any troubleshooting or maintenance. Failure to

do so may cause serious injury if the motors start unexpetedly.

• In angle mode (switch position 0 ), the quadcopter will self-level and has a bank angle limit of approximately 60 degrees.

• In air mode (switch position 1), the quadcopter will not self-level and does not have a bank angle limit. At low throttle, the

ﬂ ight controller will continue to stabilize the quadcopter to hold whatever attitude was last commanded. This mode is use-

ful for ﬂ ying smooth aerobatic maneuvers at both high and low throttle settings.

• In acro mode (switch position 2 ), the quadcopter will not self-level and does not have a bank angle limit. At low throttle, the

ﬂ ight controller will not stabilize the quadcopter. The pilot must actively control the quadcopter to maintain a desired at-

titude. This mode is most preferred when immediate changes in altitude are desired, such as in racing. Use rates and expo

to tune the performance according to your ﬂ ying style.

Refer to the Transmitter Setup for transmitter switch selection and speciﬁ c setup information.

Preparing the Theory XL Quadcopter for Flight

1. Before each ﬂ ight, ALWAYS power on the transmitter before connecting the ﬂ ight battery to the quadcopter. After each

ﬂ ight, disconnect the ﬂ ight battery from the quadcopter before powering off the transmitter.

NOTICE: Connecting the ﬂ ight battery before powering on the transmitter can start the binding process. Please see the

Transmitter and Receiver Binding section of this manual for more information.

2. When the ESC beeps, the ﬂ ight controller is initialized and ready for ﬂ ight.

The ﬂ ight controller will not arm the motors until the throttle stick is in the lowest possible position.

Takeo

When you are prepared to ﬂ y, start the motors by activating the motor arm switch (switch H), as programmed in the

transmitter setup section. Increase the throttle until the model is approximately 2 ft. (600mm) off the ground and check

the trim so the model ﬂ ies as desired. Once the trim is adjusted, begin ﬂ ying the model.

Flight times for the included battery will vary according to how aggressively the throttle is used.

Low Voltage Cuto (LVC)

LVC decreases the power to the motors when the battery voltage gets low. When the motor power decreases, land the

aircraft immediately and recharge the ﬂ ight battery.

LVC does not prevent the battery from over-discharge during storage.

NOTICE: Repeated ﬂ ying to LVC will damage the battery.

Landing

To land, slowly decrease the throttle while in a low-level hover. After landing, stop the motors by changing the motor arm

switch to the off position; disconnect and remove the battery from the aircraft after use to prevent over discharge. During

storage, make sure the battery charge does not fall below 3V per cell.

Flying the Theory XL Quadcopter

Flight Mode and Rate Selection