The ultimate guide to the E-flite Carbon-Z Cub SS 2.1m BNF Basic

For model flight enthusiasts looking for a versatile, robust and powerful RC aircraft, the Carbon-Z Cub SS from E-flite is an impressive option. Thanks to the integrated AS3X and SAFE Select technology, this model with 2.1 meter span in the BNF Basic version offers an excellent flight experience for both beginners and experienced pilots. In this comprehensive guide you will learn everything you need to know about this remarkable model aircraft.

Technical specifications and equipment

The E-flite Carbon-Z Cub SS 2.1m BNF Basic comes with impressive equipment and technical data that make it a powerful RC aircraft.

Technical data at a glance

Scope

The model is delivered as BNF (Bind-N-Fly) Basic version, which means that the following components are included:

• Preassembled fuselage with installed brushless motor
• Support surfaces with pre-installed servos
• Spectrum receivers with AS3X and SAFE Select technology
• Electronic speed controller (ESC)
• All required servos
• Detailed construction instructions

Not included are:

• Remote control (Spektrum DSM2/DSMX transmitter recommended)
• Flight battery (6S LiPo recommended)
• Charger
• AA batteries for the transmitter

Customer experiences and reviews

What pilots say about the Carbon-Z Cub

The feedback from customers who purchased the Carbon-Z Cub SS is predominantly positive. Many model building enthusiasts particularly praise the flight characteristics and stability of the model. The AS3X technology is often referred to as a game-changer, as it effectively balances wind blows and turbulences and ensures a more precise feeling of flight.

A recurring praise applies to the versatility of the model. Pilots appreciate the possibility of changing between a gentle, leisurely flight style and more dynamic maneuvers. The SAFE Select function is estimated by less experienced pilots as valuable support in learning more complex flight maneuvers.

Long-term users report a surprisingly high robustness of the EPO foam construction, even in occasional inappropriate landings. The carbon reinforcements contribute significantly to stability without unnecessarily increasing weight.

Some users report initial challenges in setting the focus, but this could be resolved after some test flights and adjustments.

Test results from journals and portals

In various specialist journals and specialized RC model building websites, the Carbon-Z Cub is rated as one of the best larger foam models in its class. Particular emphasis is placed on:

• The excellent processing and attention to detail
• The impressive flight stability even in windy conditions
• intuitive control thanks to AS3X technology
• The ability to switch between different flight modes

In comparison tests with similar models, the Carbon-Z Cub cuts well above average, especially in the categories of flight performance, processing and longevity.

Material quality and processing

Robust design for longevity

The E-flite Carbon-Z Cub SS convinces with its high-quality construction. The EPO material (Expanded polyolefin) is significantly more robust than conventional polystyrene and offers a good balance between weight and stability. The strategically placed carbon reinforcements in support surfaces and fuselage provide additional stiffness with minimal weight gain.

The surfaces are cleanly processed and finished lacquered, with authentic colorings and decals that are very close to the model. The cockpit details and the true-to-scale pilot pinion give the model a realistic appearance.

The quality of the pre-installed hardware is particularly noteworthy:

• High quality metal hinges for rudder
• Precisely working digital servos
• Robust joints with ball heads
• Reliable brushless motor with sufficient power reserve

The large tundra tyres designed for uneven landings and start-ups show good processing and durability.

Flight performance and characteristics

Impressive performance in the air

The Carbon-Z Cub SS impresses with its excellent flight properties. With the recommended 6S LiPo configuration, the model has plenty of power reserves for different flight styles:

Flight time: With a 6S 5000mAh LiPo battery, flight times of 10-15 minutes are realistic, depending on the flight style chosen. At leisurely cruises can be reached up to 20 minutes.

Ascending power: The rise is impressive. With full gas, the model reaches considerable heights in a few seconds. The powerful 50-size brushless engine delivers more than enough thrust for steep climbs and vertical maneuvers.

Speed: The Cub offers a wide range of speeds from slow, scale-scattered flights to fast overtime. The landing flaps allow extremely slow approaches and short landing distances.

Art skills: Although designed primarily as a scale model, the power reserve also allows basic art flight maneuvers such as loopings, rollers and immelmann towers.

Slow flight: The slow flight behavior is particularly impressive. With extended landing flaps, the Cub can be flown extremely slowly and controlled – ideal for realistic landing approaches and for beginners who need more time to react.

AS3X technology contributes significantly to flight rest by automatically balancing unwanted effects due to wind blows. SAFE Select offers additional stabilisation and self-leveling functions that are particularly valuable for less experienced pilots.

Transport and storage

Practical solutions despite size

With a span of 2.1 meters, the transport of the Carbon-Z Cub represents a certain challenge. The good news is that the model for transport can be disassembled:

• The supporting surfaces are divided into two parts and can be separated from the fuselage
• The height control unit is removable
• The large tundra tires can be disassembled if necessary

A specially adapted transport bag or box is recommended for transport. Many pilots report that they can easily reach the airfield with a medium-sized car when the model is disassembled.

For storage a dry, not too warm room should be chosen. Direct sunlight can let the colors of the model fade out with time.

Spare parts supply and support

Reliable supply of replacement components

As a product of Horizon Hobby, one of the largest suppliers in the RC sector, the spare parts supply for the Carbon-Z Cub SS is outstanding. Almost all components are available individually, from small screws to complete support surfaces or the motor.

Most dealers have common spare parts in stock or can purchase them at short notice. The components are also well available via online shops.

Particularly frequently requested spare parts are:

• Propeller
• Landegear and wheels
• Servos
• Small parts such as distractions and rudder horns

The customer support of Horizon Hobby is generally rated as very good, with fast reaction times and competent advice on technical questions.

Target group and entry barriers

Who is the Carbon-Z Cub suitable for?

The E-flite Carbon-Z Cub SS 2.1m BNF Basic is primarily aimed at advanced pilots with experience in handling larger models. Nevertheless, SAFE Select technology makes the model also interesting for ambitious beginners who have already gained first experience with smaller models.

Ideal user groups:

• Advanced RC pilots looking for a larger scale-oriented model
• Beginners with previous knowledge, who wish a safe entry into larger models thanks to SAFE Select
• Scale enthusiasts who appreciate the classic design of the Cub
• Pilots looking for a versatile model for different flight styles

The Carbon-Z Cub requires a sufficiently large airfield. Due to the size and weight it is not suitable for small gardens or cramped conditions.

Construction and assembly

From carton to first flight

The E-flite Carbon-Z Cub SS is delivered in a high preassembly degree. The final assembly is limited to a few steps:

1. Joining the two-part supporting surface
2. Mounting of the supporting surface on the fuselage
3. Attaching the height control unit
4. Installation of the chassis
5. Installation of the flight battery
6. Binding of the receiver with remote control

Most users report that final assembly can be completed in about 1-2 hours. The enclosed guide is described as very understandable and well illustrated, with clear step-by-step instructions.

Before the first flight, a careful review of all rudder stops and the focus is essential. The guide contains detailed information and recommended settings.

Community and support

An active network of like-minded

An active community has developed around the Carbon-Z Cub. In numerous forums, Facebook groups and YouTube channels, owners exchange their experiences, modifications and tips.

These community resources provide valuable support for:

• Adjustment of optimal focus and rudder deflections
• Tips for programming flight modes
• Aid for technical problems
• Proposals for modifications and improvements

The numerous flight videos are particularly valuable, which give beginners a good impression of flight behaviour and can help in their own flight preparation.

Alternatives and competitive products

Comparison with similar models

In the larger foam model aircraft segment there are some alternatives to the Carbon-Z Cub SS, which are worth a comparison:

E-flite Carbon Z Cessna 150T:With similar dimensions (2.1m span), the Cessna 150T offers a different flight picture. It also has a two-legged suspension with spoon wheel and large tundra tires for use on uneven terrains. With a flying weight of about 4200g without battery, it is somewhat heavier than the Cub. The Cessna also offers AS3X and SAFE Select technology and is suitable for 4S to 6S LiPo batteries.

FMS Super EZ Trainer:As a cheaper alternative, this trainer offers a similar concept with 1.4m span, but is significantly smaller and easier to transport. The flight properties are more humble, but the performance and size do not reach the level of the Carbon-Z Cub.

Hobbyking Durafly Tundra:With 1.3m span, the tundra is smaller, but offers a similar concept with large tundra tires for terrain starts. The price is significantly cheaper, but the advanced stabilization systems of the E-flite model are lacking.

Multiplex FunCub XL:With 1.7m span somewhat smaller, but with similar insert profile. Processing is high quality, but the price is similar. The flight properties are comparable good-natured, but without the electronic auxiliary systems of the E-flite model.

Value for money

Investment in quality and technology

The E-flite Carbon-Z Cub SS 2.1m BNF Basic is located in the upper price segment for foam model aircraft. The higher price is explained by:

• Advanced AS3X and SAFE Select technology
• High-quality processing and carbon reinforcements
• The powerful brushless motor
• The digital quality service
• The high degree of preassembly

Taking into account the longevity, first-class flight characteristics and technological features, the model offers a reasonable price-performance ratio for many users. The investment amortises over the long service life and the high fun factor.

Beginners should bear in mind that additional costs for transmitter, battery and charger are added if they are not already available.

Tips, tricks and optimizations

Get the maximum out of the Cub

Optimum battery selection

Experienced pilots recommend:

• 6S LiPo with 4000-5000mAh for dynamic flying
• 6S with 6000-7000mAh for maximum flight time
• Rechargeable batteries with at least 30C discharge rate for sufficient power reserves

Priority optimization

The focal point has a decisive influence on flight behaviour:

• The factory recommendation offers a good starting point
• A slightly head-loaded setting increases the stability for beginners
• Experienced pilots can experiment with a slightly more cocky attitude for more agile behavior

Rudder

Many pilots use these settings:

• Low outputs for scale-oriented flights and beginners
• Medium blows for normal flying
• High outputs for dynamic maneuver

Area

The Carbon-Z Cub can start from different backgrounds thanks to its large wheels:

• Shortly mowed grass areas
• Asphalt or concrete pistes
• Field paths with solid ground
• When using floats also of water surfaces

Significant modifications

Experienced pilots have identified the following improvements as particularly useful:

• Installation of LED lighting for dawn flights
• Upgrade to stronger servos for even more precise control
• Creating an FPV Camera for Immersive Flight Experience
• Addition with a tow coupling for drawing sailplanes
• Conversion rate for floats for water operations

Frequent questions and problems

What users want

"How long does the battery charge process last?"

The charging time depends on the charger used and the battery capacity. A modern charger needs about 60-90 minutes at 1C charging current for a 6S 5000mAh battery. Balancer chargers that monitor each cell individually are recommended.

"Can I fly with the model on wind?"

Thanks to AS3X technology, the Carbon-Z Cub makes light to medium wind (up to about 20 km/h) very good. With stronger wind, flying becomes more demanding, but remains controllable for experienced pilots.

"Is the model suitable for art flight?"

The Cub is primarily a scale model, but dominates basic art flight figures such as loopings, roles and turns without any problems. For more demanding 3D art flight there are better suited models.

"What remote control do I need?"

As a BNF basic version, the Cub needs a compatible spectrum DSM2/DSMX transmitter with at least 6 channels. The spectrum DX6, DX8 or DX9 are recommended for full functionality including SAFE Select programming.

"What to do with transport damage?"

In the case of visible transport damage to the packaging, the acceptance should be denied or a damage notice should be deposited with the transporter. Contact immediately the dealer or Horizon Hobby customer service, which usually handle kulant with such cases.

"How do I repair minor damage to the foam?"

Suitable for smaller repairs on EPO material:

• UHU Por for small cracks and fractures
• 5-minute epoxy for structural repairs
• Special EPO adhesive for large-surface bonding
• Clear packing tape for temporary fixation or reinforcement

"How do I opt for the SAFE Select settings?"

For beginners it is recommended:

1. Activation of the SAFE Select function during binding
2. Assignment to a readily accessible switch at the transmitter
3. Start with the factory settings for angle limit
4. Stepwise increase of the permissible angle of inclination with increasing experience

Conclusion: An impressive overall package

The E-flite Carbon-Z Cub SS 2.1m BNF Basic with AS3X and SAFE Select represents a comprehensive package for RC pilots looking for a larger, versatile model. It combines excellent flight characteristics with modern technologies and high-quality processing.

The strengths of the model are clearly in its versatility, excellent flight performance and supporting electronics. The weaknesses are mainly limited to transport challenges due to size and comparatively high purchase price.

For pilots who are willing to invest in a high-quality model, this RC aircraft offers a long-term, satisfying flight experience with numerous applications – from relaxed scale flights to more dynamic maneuvers.

The extensive community and good support through Horizon Hobby complete the positive overall picture and make the Carbon-Z Cub a recommended choice for ambitious RC pilots.