E-flite Viper 90mm EDF Jet ARF Plus (EFL17770)

E-flite Viper 90mm EDF Jet ARF Plus (EFL17770): The ultimate guide for buyers

The E-flite Viper 90mm EDF Jet ARF Plus (EFL17770) stands for impressive performance, excellent workmanship and user-friendliness in the world of the large-scale EDF jets. If you are looking for a versatile, powerful and easy-to-use jet, this model gives you a real highlight. In the following guide you will find a detailed overview of all technical, practical and user-specific aspects of this RC aircraft – from data sheets to purchase and application tips.

Technical data and facts (table form)

Customer reviews and experiences (exact)

The user opinions on the E-flite Viper 90mm EDF Jet ARF Plus are mostly very positive. The excellent processing and the high precision of fit of the components are particularly praised. Many pilots report that the jet is well-managed even without professional knowledge and is particularly suitable for entry into the world of large-scale EDF jets. The flight properties are described as extremely balanced: The model is precise and predictable both in the case of slow landings as well as in the case of rapid overhauls (over 190 km/h).

The versatility – art flight maneuvers such as huge loops, rollers, knife flights or fast turns can be performed almost playfully. The electronics, such as the eight installed digital metal transmission servos, also convinces with reliability and longevity. There are few criticisms, most likely the pricing is discussed, but it is considered appropriate in view of the size and quality. Individual cases report defective individual electronic components, which could be easily replaced by the spare parts service.

Test results and independent assessments

In test reports by renowned RC journals and online portals, the E-flite Viper Jet regularly cuts off as one of the best big EEDF jets in its class. Above all, the perfect combination of aerodynamics and drive efficiency is highlighted. The mature hull and wing structure ensures an ideal airflow and high flight stability. The testers also praise the maintenance-friendly design: Thanks to the two-piece wing with quick connections and the foldable suspension, the machine is ready for use within a few minutes.

An important aspect is the versatility in setup: The user can develop different EDF drives and engines as required, increasing the flexibility for advanced and ambitious pilots. Landings on grass slopes can also be easily achieved by the robust, spring-mounted suspension.

Material quality and processing

The Viper 90mm relies on highly compressed EPO foam, which is additionally reinforced with composite materials at stressed locations. This results in excellent shock resistance and a significantly increased service life compared to classic foam aircraft. The surface quality is described as exceptionally high quality, painting and decor are weather resistant and durable. Plastic caps on nose and air inlet areas further increase robustness.

Flight times and battery management

The flight time depends significantly on the selected drive train and the battery used. With a high-quality 6S LiPo battery (depending on capacity), average flight times of 4 to 8 minutes are realistic. Anyone who chooses a particularly lightweight drive and flies in an economical manner can even slightly exceed the flight time. The generously dimensioned cabin compartment allows the use of various battery sizes and types, so that individual preferences can be taken into account in performance, focus and flight time.

Increased performance and flight behaviour

The slope of the electric jet is impressive and is described by pilots as “racet-like”. Larger loopings and sophisticated art flight figures also succeed without performance breaks. Even at full altitude, the model accelerates quickly thanks to efficient aerodynamics and powerful drive – perfect for dynamic show flights, speed passes or competitions. At the same time, the jet remains well controllable in all flight situations and forgives smaller control errors.

Transportability and assembly

A big plus: The Viper 90mm can be transported extremely space-saving thanks to its two-piece support surface and the practical plug-in/fast connections. The model can be disassembled after flying in a few steps without the need for tool or adhesive. This is a decisive advantage especially for pilots with limited storage space or for transport to the airfield.

Spare parts supply and service

Spare parts and accessories are available for the E-flite Viper in a wide range. Especially for an ARF Plus model, the possibility of retrofitting or exchanging individual components is an important factor for maintaining value. The manufacturer as well as numerous specialist dealers offer a wide range of parts – from suspension legs to support surfaces to servos or light modules – and thus ensure rapid repair after accidents or wear.

Target group: Who is the model suitable for?

The E-flite Viper 90mm EDF Jet ARF Plus (EFL17770) is designed for ambitious beginners as well as advanced and experienced RC pilots. Beginners in the EDF area benefit from easy-to-control flight behavior and robust design, while experts will appreciate the playroom when choosing the drive and the versatile art flight options. Also for club flyers or show pilots who value an outstanding price-performance ratio and an impressive look, the model is a top choice.

Assembly: effort and instructions

Another highlight is the sophisticated design of this jet model variant. The assembly is practically toolless, since all components are precisely prefabricated. Thanks to the detailed, easy-to-understand instructions, even less experienced model builders are able to make the aircraft fly ready in no time – often the assembly takes less than an hour. The electronics can also be set up quickly thanks to plug-in connections and clear cable guides.

Community support and exchange of experience

The E-flite Viper 90mm has built up a considerable fan base within the RC community. In relevant forums, groups and social media platforms there are countless experience reports, flight videos and setup tips. The exchange with other users is simple and straightforward. Regional model flight clubs also support beginners and provide assistance in the first flight or in the selection of suitable drive components.

Alternative products of competitors (executive)

Of course there are also some alternatives to the E-flite Viper 90mm on the market. In particular, the following models are often used as a comparison:

Compared with these competitors, the Viper 90mm scores in particular through the uncomplicated design, the flexible drive concept and the wide range of available spare parts. In addition, handling in the lower speed range is superior to many other jets, which makes landings and starting easier.

Value for money

The value for money is almost consistently rated as “excellent”. Despite the comparatively high entry price, the Viper offers exceptional equipment, excellent material quality and sophisticated technology. Since the jet is delivered as an ARF Plus version, each pilot can choose its preferred drivetrain and battery itself and thus customize the model to its requirements. Due to the longevity and the maintenance of value, the purchase costs are relative to the service life.

Tips, tricks, recommendations and optimizations

Some proven optimizations and tips from the community:

• Battery positioning: The focus can be optimally adjusted by targeted displacement of the battery in the large-scale cabin compartment – important for precise art flight behavior.
• Drive selection: If you want maximum flight time, use efficient controllers and easier EDFs. However, high-end EDF units can be installed for top speed.
• Use landing flaps: The suspension legs and the functional landing flaps also allow start and landings on grass pistes – a real advantage over rigid suspensions.
• Transport: The division of the wings and the practical plug-in system make it possible to transport in the car without major rebuilding measures.
• Maintenance: Regular control of the ball joints, hinges and articulations increases operational reliability and extends the service life.
• Individual painting: Anyone who wants to stand out from the crowd can customize the model with their own decors and details – especially on competitions an eye-catcher.

Other interesting aspects for buyers

• Upgrade potential: In addition to the drive, electronics and light system can easily be replaced or expanded by powerful components.
• Accessories: The ARF Plus version is ideal for pilots who already have high-quality engines, controllers and EDFs – so existing material can be used further.
• Flight modes: Many users recommend the programming of Expo and Dual Rate values at the transmitter in order to optimally adapt the control behavior to the personal preferences.
• Application: The Viper is suitable for both cozy evenings and spectacular airshows.

User questions and typical problems: solutions & answers

Question: Which drive is recommended?

• Answer: Recommended are 6S EDFs with at least 1600 Watt power and matching current carrying capacity. If you want maximum performance, you can use 8S-enabled systems, but you have to pay attention to the weight.

Question: Which flight times are realistic?

• Answer: With a high-quality 6S 6000mAh battery and moderate flight style, flight time is between 5 and 7 minutes. With two smaller batteries in parallel switching mode, the time can be further increased.

Question: Are there problems with stability at high speed?

• Answer: The optimized aerodynamics and the reinforced material ensure high stability even at speeds far over 190 km/h. However, check the attachments and attachments regularly.

Question: Is the guide also understandable for beginners?

• Answer: The assembly instructions are well illustrated and available in several languages so that beginners can easily master the construction.

Question: How easy is the replacement part procurement?

• Answer: Spare parts can easily be purchased via the manufacturer and numerous dealers, often there are even special spare parts for the most common wear parts.

Question: Do larger batteries fit?

• Answer: The battery compartment is generously dimensioned so that even larger capacities (up to 7000mAh) can be used. It is important to keep an eye on the total weight and the focus.

Question: Does the transition to the Viper 90mm pay for pilots with experience on smaller EDF jets?

• Answer: Definitely, as this model perfectly supports the next step in the hobby thanks to its balanced properties, robustness and flexible drive selection.

Conclusion

The E-flite Viper 90mm EDF Jet ARF Plus (EFL17770) is the perfect link between entry-level, high-end performance and uncompromising material and processing quality. The model convinces with a sophisticated overall concept that delights both ambitious hobbyists and professionals. Especially the flexible construction, the first-class flight characteristics and the broad community make this jet variant one of the best investments in the field of large-scale EEDF aircraft. If you are looking for a reliable, powerful and versatile jet, this model guarantees an excellent choice.