E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic is a scaled-down, ultra-micro “flat foamy” aerobatic aeroplane that delivers genuine 3D capability in smaller spaces with rapid, hassle-free setup. The airframe arrives fully factory-assembled, combining a powerful 2S-compatible brushless outrunner motor with a prop saver, a Spektrum control unit and receiver, and four factory-installed servos for precise control. Optional-use SAFE Select flight envelope protection and AS3X stabilisation provide a locked-in feel and on-demand assistance, while fly-by-range telemetry helps you monitor flight battery voltage on compatible Spektrum transmitters. With a 450mm wingspan, laser-cut composite-reinforced foam construction, oversized control surfaces, and BNF Basic convenience, E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic blends performance and practicality for pilots seeking agile indoor and outdoor flying.
Key features of the E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic
- Ultra-micro flat foam airframe – lightweight, laser-cut, and composite-reinforced for durability and precise handling
- 2S brushless power system – outrunner motor with prop saver delivers strong thrust and efficient performance
- AS3X and SAFE Select – stabilisation and optional flight envelope protection for confident flying
- Fly-by-range telemetry – real-time battery voltage feedback on compatible Spektrum transmitters
- BNF Basic convenience – factory-assembled with servos, receiver, and ESC installed for rapid binding and flight
- Oversized control surfaces – designed for full 3D aerobatic manoeuvres and responsive control
- Indoor and outdoor versatility – capable of slow cruising, smooth sport flying, and aggressive 3D in compact spaces
What makes E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic a versatile, ultra-micro 3D performer?
The ultra-micro span and flat foam construction open up flying locations that larger models can’t access, without compromising structural integrity or control authority. Composite reinforcement and laser-cut precision ensure the airframe remains rigid under aerobatic loads, while the lightweight design supports slow-speed stability and high-angle manoeuvres. Oversized control surfaces allow aggressive pitch, roll, and yaw inputs for true 3D behaviour, yet the platform is equally comfortable with smooth sport flying and relaxed cruising. This balance enables E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic to deliver a “mild to wild” flight envelope that suits a wide range of intermediate and experienced pilots.
How do AS3X and SAFE Select enhance E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic control?
AS3X stabilisation works behind the scenes to counter the effects of turbulence and wind, providing a locked-in feel that makes the aeroplane track like a larger model. Optional-use SAFE Select adds pitch and bank angle limits plus automatic self-levelling, which can be switched on or off to match pilot confidence and the current flying environment. This intelligent assistance helps pilots maintain orientation during learning phases or in tight indoor spaces, and it enables more consistent, repeatable manoeuvres outdoors. Together, AS3X and SAFE Select ensure E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic remains predictable when you need stability and responsive when you want performance.
Can E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic deliver the best blend of power and precision?
A factory-installed brushless outrunner motor with a prop saver provides efficient thrust that supports unlimited vertical and high-energy 3D manoeuvres with recommended 2S 280–350mAh batteries. The prop saver design helps protect the drivetrain during minor bumps, and the tuned power system ensures strong acceleration with smooth throttle transitions. Paired with a Spektrum receiver and integrated ESC, the setup offers crisp response and reliable power management, crucial for precise figures and tight manoeuvre timing. This combination of power and control gives E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic the capability to perform advanced aerobatics while remaining approachable for sport flying.
Why is fly-by-range telemetry on E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic valuable to pilots?
Real-time flight battery voltage telemetry, available to compatible Spektrum AirWare-equipped transmitters, helps you manage packs confidently while airborne. Having immediate voltage feedback allows pilots to decide when to reduce throttle or set up for a landing rather than guessing remaining capacity. This reduces the risk of over-discharging batteries and helps maintain consistent performance across flights. With telemetry integrated into the control unit, E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic supports smarter flying and better pack longevity.
Is E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic the affordable way to explore ultra-micro 3D?
BNF Basic convenience means the aeroplane arrives completely factory-assembled, with servos, receiver, and ESC installed, so binding a compatible Spektrum transmitter gets you flying quickly. This reduces setup overheads and lowers barriers to entry for high-output 3D flying. The recommended 2S battery range is widely available, and the compact airframe opens up indoor venues and local outdoor spaces, making regular practice more accessible. All of this positions E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic as an affordable pathway into consistent aerobatic training and confident sport flying.
How does E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic expand flying locations indoors and out?
The ultra-micro footprint allows flying in gyms, garages, and living spaces while retaining enough presence and power for parks, sports fields, and open areas. The laser-cut composite-reinforced foam construction keeps airframe weight low, supporting slow, controlled lines in tight environments. Outdoors, the stabilised handling from AS3X helps smooth gusts, and SAFE Select can be activated when conditions become challenging. This flexibility means E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic adapts to different venues without requiring extensive reconfiguration, making frequent practice sessions more attainable.
What’s included with E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic and what do you need?
In the box, you’ll find the ultra-micro airframe with Spektrum linear servos installed, a factory-tuned brushless outrunner motor with prop saver, and the Spektrum control unit integrating the receiver and brushless ESC. You’ll also receive the product manual to guide setup and binding. To complete the system, use a full-range 5+ channel Spektrum DSMX/DSM2 compatible transmitter, a 2S 7.4V 280–350mAh LiPo with a 3-pin JST-PH connector, and a suitable LiPo charger (with an adapter/charge lead such as SPMXCA326 if required). This straightforward, familiar ecosystem makes E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic easy to integrate into an existing Spektrum hangar.
Does E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic fit Skill Level 2 pilots seeking progression?
The aeroplane is recommended for pilots with some prior experience, especially those comfortable with higher-performance ultra-micro models. The stabilised handling options make learning pathways smoother, while the oversized control surfaces and brushless power unlock real 3D potential for progressing skills. Because E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic is capable of both slow cruising and aggressive aerobatics, pilots can tune sessions to match confidence, venue size, and current conditions. This range supports incremental growth without needing to switch aircraft for each stage.
Where does E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic shine in everyday flying?
For relaxed flights, the lightweight, reinforced airframe and stabilisation provide smooth tracks and predictable turns at low speed. When you want to push, the brushless power and control authority facilitate consecutive 3D figures—vertical climbs, tight rolls, and dynamic transitions—without feeling twitchy or unsettled. Fly-by-range telemetry helps maintain situational awareness during these sessions, while the compact size means opportunities to practice appear more often. In daily use, E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic offers a practical way to refine both precision and showmanship.
Is E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic the best choice for ultra-micro aerobatics?
The combination of a composite-reinforced flat foam airframe, oversized control surfaces, and a reliable 2S brushless power system delivers the crisp response needed for high-energy manoeuvres. AS3X and optional SAFE Select extend that capability by maintaining a stable platform, especially in smaller indoor venues or breezy outdoor sessions. With BNF Basic assembly and compatible Spektrum radios, setup is quick and familiar, allowing more time in the air. These attributes make E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic a compelling candidate for the best balance of convenience and aerobatic performance in the ultra-micro class.
Ready to buy E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic?
Buy E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic to enjoy factory assembly, AS3X and SAFE Select support, fly-by-range telemetry, and a 2S brushless power system designed for genuine 3D capability in compact indoor and outdoor spaces.
Brand, model and product type
- Brand: E-flite; Model: A-EFLU02050; Colour: flat foamy finish (laser-cut composite-reinforced foam construction).
- Product type: E-flite A-EFLU02050 UMX Eratix 3D FF 450mm BNF Basic, E-flite UMX Eratix 3D FF with AS3X and SAFE Select, E-flite UMX Eratix 3D FF ultra-micro flat foamy aerobatic aeroplane, E-flite UMX Eratix 3D FF BNF Basic with brushless outrunner motor, E-flite UMX Eratix 3D FF with Spektrum receiver and telemetry.
Dimensions and weight
- Wingspan: 45.0 cm (converted from 450 mm) — compact span enables indoor venues and tight outdoor spaces.
- Length: 48.7 cm (converted from 487 mm) — balanced proportions support stable tracking and manoeuvre precision.
- Weight: 0.0625 kg (converted from 62.5 g) — comfortably under 250 g for agile responses and slow-flight capability.
- Airframe form: flat foamy profile with composite reinforcement to maintain rigidity during aerobatics.
Airframe and construction
- Material: laser-cut flat foam with composite reinforcement for durability and crisp control feel.
- Control surfaces: oversized to unlock full 3D aerobatic authority and responsive inputs.
- Assembly level: completely factory-assembled BNF Basic for rapid binding and minimal setup time.
Power system
- Motor: brushless outrunner, factory-installed, tuned for strong thrust and smooth throttle transitions.
- Prop saver: integrated to help protect the drivetrain during minor bumps and learning sessions.
- Battery compatibility: 2S 7.4 V 280–350 mAh LiPo range recommended for balanced power-to-weight.
Radio, receiver and control
- Receiver: Spektrum control unit with integrated receiver and brushless ESC for streamlined wiring.
- Protocol: 2.4 GHz DSMX technology provides robust signal and familiar Spektrum ecosystem pairing.
- Servos: four Spektrum linear servos installed with linkages for precise control of oversized surfaces.
Stability and assistance technologies
- AS3X stabilisation: delivers a locked-in feel by smoothing the effects of turbulence and wind.
- SAFE Select: optional flight envelope protection with self-levelling and bank/pitch angle limits, switchable on demand.
Telemetry and situational awareness
- Telemetry capability: real-time flight battery voltage to compatible Spektrum AirWare transmitters for pack management.
- Fly-by-range operation: designed to provide telemetry within practical sport-flying ranges for confidence in the air.
Performance and flight envelope
- Aerobatic capability: supports unlimited vertical and high-energy 3D with recommended 2S batteries.
- Versatility: “mild to wild” range from slow cruising and smooth sport flying to aggressive aerobatics.
- Venue flexibility: suitable for indoor spaces (living rooms, garages, gyms) and outdoor areas (parks, sports fields).
Transmitter and ecosystem compatibility
- Transmitter requirement: full-range 5+ channel Spektrum DSMX/DSM2 compatible transmitter.
- Charging accessories: compatible LiPo charger; adapter/charge lead such as SPMXCA326 may be required (sold separately).
- Connector type: 3-pin JST-PH on recommended battery packs for straightforward connection.
Included and completion items
- Included: E-flite UMX Eratix 3D FF 450mm airframe, Spektrum linear servos (installed), brushless outrunner motor (installed), control unit with receiver and ESC (installed), product manual.
- Needed to complete: compatible Spektrum transmitter, 2S 280–350 mAh LiPo with 3-pin JST-PH connector, suitable charger and optional adapter/charge lead.
Skill level guidance
- Skill Level 2: recommended for pilots with some experience in higher-performance ultra-micro or similar class aircraft.
- Progression support: stabilisation options and responsive aerodynamics help refine skills across varied venues.
Warranty
- What’s included: factory-assembled airframe with pre-installed Spektrum servos, receiver, ESC, and brushless motor, plus product manual.
