E-flite Viper 70mm EDF Jet BNF Basic with AS3X and SAFE Select, 1100mm (EFL7750)

E-flite Viper 70mm EDF Jet BNF Basic with AS3X and SAFE Select, 1100mm – The comprehensive supplier

The E-flite Viper 70mm EDF Jet BNF Basic with AS3X and SAFE Select, 1100mm (EFL7750) is one of the most popular foam EF jets on the market. Thanks to its advanced electronics, high-quality design and excellent flight characteristics, this model is aimed at both beginners in the world of jet aviation and experienced pilots looking for a reliable, powerful model. In this article you will receive all relevant information about technology, practical experience, test results, optimizations, spare parts supply and much more.

Technical data and facts

Overview of the main technical details of the model:

Customer reviews and experiences

The feedback from the user community is consistently positive. In particular, the flight stability is praised by AS3X, the optional SAFE select system and the flight properties that are easy to control. Many buyers report that the jet is surprisingly good for EDF newcomers as long as the recommended settings are used. The following points are often mentioned:

• Flight behaviour: Very agile, but also good-natured, even start and landing succeed without any problems. The model behaves like a sports aircraft and is not nervous.
• Performance: With the new 85A controller and the 1900Kv engine, the model impresses with its speed (over 190 km/h) and almost unlimited climbing performance with 6S 4000 mAh batteries.
• Processing: The quality of the foam material is praised, as is the integration of the components and the clean coating.
• Construction: The assembly is simple, usually done within an hour, thanks to the precise plug connections and screwed surfaces.
• Reliability: Even after many flights there is little wear or failure.

Few critical voices refer to the size of the recommended batteries, which must be used in some cases accurately and to the need to adhere exactly to the center of gravity.

Test results in detail

In numerous independent tests, the model is excellently cut off. Several magazines and online portals call E-flite Viper the ideal entry into the EDF jet class. Particular emphasis is placed on:

• Precise control: Thanks to AS3X, the model also flies stable with wind. SAFE Select helps start and in critical situations.
• Flight times: With 4000 mAh batteries, realistic flight times can be reached for 4.5-6 minutes, depending on the flight style.
• Performance development: The thrust is sufficient for vertical climbing flights – even after several reels and turns there is enough energy.
• noise: The 12-sheet emitter creates a pleasant, turbine-like sound.
• soil handling: The feather legs and wide tires allow start-ups and landings also from short-sized grass pistes.

Material quality and robustness

The model consists almost entirely of high-quality, wear-resistant EPO foam. This material combines low weight with high impact strength. Especially the surfaces and the suspension were designed specifically for high loads. Reinforcements made of plastic and CFRP at critical points ensure additional stability. The support surfaces and the height guide are screwed, which further increases the robustness.

Flight times and climbing performance

If a 6S 4000 mAh 30C+ battery is used, the following values can be realized depending on the flight style:

• Flight time: 4–6 minutes (with changing full and partial load, incl. start landing).
• Increased power: The model can rise almost vertically and retains enough thrust reserves even after several loopings.
• Maximum speed: Over 190 km/h are available at full gas.

Saving handling of the gas significantly extends the flight time. Anyone who permanently retrieves maximum power will end after four minutes.

Transport capacity

With a length of well one meter and removable surfaces as well as guide mechanisms, the model can be easily transported in the trunk or even on the rear bench. The assembly and disassembly take less than 10 minutes, since screw connections are used almost exclusively. For transport, a protective bag or padding is recommended to protect the surface of the foam.

Spare parts supply

E-flite is known for its exemplary spare part supply. All components are available individually for the Viper 70mm EDF, from the hull nose to support surfaces to individual chassis components, servos or chassis flaps. Spare parts are easy to obtain via the specialist trade or online, so that a quick repair is guaranteed in case of damage.

Target group

This jet model is aimed at ambitious beginners as well as advanced EDF pilots. Thanks to the electronic support (SAFE Select) as well as the calm flight behavior, EDF beginners also succeed in stress-free first flights. Experienced pilots appreciate the high speed and the enormously wide air performance spectrum – from relaxed cruises to dynamic art flights.

Construction and Guidance

The structure is deliberately kept simple, without gluing. The surfaces, guides and the suspension are only screwed and connected to plug strips. The guide is illustrated and available in German, step by step explained. The model is usually ready to start in less than an hour, including all settings for flaps, suspensions and center of gravity.

Community support

The E-flite Viper enjoys a huge fan community, both in forums and in social networks. Numerous YouTube videos, Facebook groups and specialist forums deal with the jet. Here you will find numerous tips on optimizations, flight videos, recruitment questions or individual paintings. The community quickly helps with all technical and flight-practical questions.

Alternatives of competitors

Anyone looking for a similar model can use the following alternatives:

However, the E-flite Viper offers the most modern electronic package (AS3X/SAFE) and the best spare parts supply.

Value for money

The list price for the model is in the middle field for a high-quality 70mm-EDF-Jet. In view of the equipment – including digital-metal-driven servos, electronically retractable chassis, high-quality motor, modern stabilization technology and optional functions such as thrust reversal – the price-performance ratio is excellent.

Tips, tricks, recommendations and optimizations

To get even more out of the model, experienced pilots recommend the following measures:

• Check SP setting: The focus should be chosen exactly according to instructions, depending on the battery size, if necessary easy to adjust.
• Gentle flying: Conducting the first flights with SAFE Select, this provides security and protects against beginners mistakes.
• Check suspension springs: Before the first use, if necessary to grease slightly, the supports run more smoothly.
• Batteries: The ideal battery is a 6S with 4000 mAh and 30–50C. Batteries with longer design often fit better.
• Optimize cooling: Who flies a lot in the hot summer can easily adjust the cover to better ventilate the electronics.
• Surface connection: Control plug connections after multiple flights to avoid play.
• Keep small parts ready for replacement: In particular, chassis flaps and nose wheels are wear parts during jet flight.

What is the interest of buyers?

• Updateability: Telemetry can be used in real time through the spectrum of smart system, later updates are possible via transmitter.
• Range: DSMX technology ensures trouble-free connection, even in large places.
• Reverse thrust: Especially practical to safely brake and turn the model on short lanes.
• Optics: The coating is visually noticeable and also clearly visible in the air.
• Additional individualization: The large community offers numerous templates and tips for Airbrush and Custom Decals.

Frequent questions and problems

Battery position – How do I optimally adjust the battery?Many users report that large 4000-mAh batteries fit only slightly into the front compartment. The trick: push the battery slightly obliquely and cleanly place the cables. The cover then closes easily.

SAFE Select – When meaningful?For the first flight or for pilots who have little experience with jet models, SAFE Select is a valuable safety net. Experienced pilots can disable the system.

Chassis blocked – what to do?The electrically retractable suspension is robust, but after hard landing dirt can accumulate. Here it is often enough to clean the mechanics and lubricate them with silicone spray.

Folding and QR too sensitive?If the model reacts too nervous in a quick flight, reduce sensitivity in the transmitter somewhat (Expo, Dual Rate). This keeps the model quiet even at high speeds.

Focus and flying characteristics?The right focus is essential. A heavy-duty plane gets nervous in flight, too head-loaded it is sluggish. With a 6S-4000 battery in the intended area, flight and landing properties are optimal.

Maintenance and care?The Viper is easy to care. After each flight, the mechanics (especially the chassis) should be controlled with ease. The EPO surface can be cleaned with a moist cloth.

Conclusion

The E-flite Viper 70mm EDF Jet BNF Basic with AS3X and SAFE Select (1100 mm) sets standards in the range of foam EDF models. It offers a wide range of services, advanced electronics, robust design and outstanding spare parts supply. For ambitious model pilots looking for a reliable and versatile jet, this model offers an excellent entry or a valuable addition to the fleet. Anyone who appreciates support, spare parts and a large community is in the best position on this model.

Whether as a first jet or sporty all-round aircraft – the Viper remains thought-out, reliable and impressively powerful. Anyone who decides for this model will receive a mature product that leaves hardly any desire in terms of both flight fun and safety and longevity.