E-flite Habu STS 70mm EDF Jet Smart PNP - The ideal entry jet for beginners and experienced pilots

In the world of remote-controlled flight models, the E-flite Habu STS 70mm EDF Jet Smart PNP takes a special position. As an optimized version of the legendary Habu design, this Electric Ducted Fan (EDF) Jet offers a unique combination of flight performance and beginners friendliness. In this detailed article we look at the model from all perspectives and provide valuable information for buyers.

Technical data and facts

The Habu STS 70mm EDF Jet convinces with impressive technical data that are interesting for beginners and experienced pilots:

Target group and applications

The Habu STS Jet Model has been specially designed to close the gap between conventional trainer aircraft and challenging jets. The letters "STS" represent "Smart Trainer with SAFE", which the main target group already indicates:

• Beginners in the Jet World: pilots with pre-experience in the RC area who want to fly their first jet
• Advanced pilots: Looking for a reliable and good-natured EDF model
• Model aircraft with limited space conditions: Thanks to improved slow flight properties, the model is also suitable for smaller airfields

It should be emphasized that this 70mm Impeller jet can actually be the first RC aircraft if it is equipped with the corresponding SAFE technology (sold separately).

Customer reviews and experiences

In numerous forums and assessment portals, the Habu STS receives positive response. Especially praised:

• Flight behaviour: Many pilots describe flight behavior as exceptionally stable and good-natured for a jet of this class
• Slow flight characteristics: Optimized aerodynamics allows controlled flights at low speeds
• Quality of components: The preinstalled components are described as high-quality and reliable
• Versatile: The possibility to fly both with 3S and with 4S batteries is highlighted positively

A recurring feedback is the surprise of many pilots, how simply the transition from conventional propeller aircraft to this EDF jet has succeeded.

Material quality and processing

The E-flite Habu STS consists of high-quality reinforced foam (Z-foam), which is characterized by the following properties:

• Robustness: The material is resistant to smaller falls and landings on uneven surfaces
• repairability: In case of damage, the material can be easily repaired with commercial adhesives
• Weight optimization: Despite stability, the total weight remains moderate

The processing is shown in precisely milled parts, clean cutting edges and high-quality lacquering. The stable undercarriage with oversized tires is to be mentioned in particular, which allows start-ups and landings on various substrates.

Flight services in detail

Flight time

The flight time of the electric jet depends significantly on the battery used:

• With a 3S 4000mAh battery, flight times of 5-6 minutes are realistic
• When using a 4S 4000mAh battery, the flight time is shortened to 4-5 minutes at higher power

These values can be optimized by a more efficient flight style (less full gas, more sails).

Increased power

The rise of the nozzle model convinces even experienced pilots:

• With 3S battery: Moderate, but sufficient gradient for standard flight maneuver
• With 4S battery: Impressive rise, the real jet feeling

It should be emphasized in particular that the specially tuned motor with the 10-sheet 70mm impeller also provides sufficient thrust with 3S batteries, while more power and speed are achieved with 4S batteries - without modifications being necessary.

Transport and handling

The Habu STS Jet is relatively transport-friendly with its span of 1033mm. The support surfaces can be removed for transport, which allows the model to be placed in most medium-sized vehicles. Practical transport bags are available in accessories.

Spare parts supply

As a product of Horizon Hobby, the spare parts supply for the Habu STS is excellent. Both mechanical components and electronic components are readily available:

• Structural parts (walls, hulls, guides)
• Chassis components
• Electronic components (ESC, motor, servos)
• Small parts and accessories

Due to the large distribution of the model, spare parts are available not only at the manufacturer, but also at many specialist dealers.

Construction and preparation

The Habu STS 70mm EDF Jet is delivered in the PNP version (plug-and-play) with already installed components. The assembly is limited to:

1. Mounting of the supporting surfaces on the fuselage
2. Installation of the height control unit
3. Installation of a compatible receiver
4. Connection and programming of remote control
5. Installation of flight battery

The attached guide is clearly designed and leads through assembly with clear images and descriptions. An experienced model builder can make the model ready for flight in about 1-2 hours.

Community support

To the Habu STS has developed an active community that provides valuable support:

• Online forums: Special threads and discussions on the model
• Video tutorials: Numerous instructions on building, setting and flight practice
• Local associations: Many model airlines have experienced pilots who are familiar with the model

These community resources are especially valuable for beginners as they offer tips and tricks that go beyond standard documentation.

Alternatives and competitors products

In the segment of the EDF-Jets, there are some alternatives worth a comparison:

1. FMS F-16 70mm EDF:

   • Similar size and performance class
   • Realistic scale model, but less good-natured flight characteristics
   • Often a little cheaper than the Habu STS

2. Freewing F-16 80mm EDF:

   • Larger Impeller, more performance
   • Higher requirements for pilots
   • Higher price and operating costs

3. Horizon Hobby Viper 70mm EDF:

   • From the same manufacturer, similar quality standards
   • More sporty flying behavior, less oriented towards beginners
   • Comparative price class

Thanks to its specially optimized aerodynamics for improved slow flight characteristics, the Habu STS stands out from these alternatives, which makes it particularly attractive for jet beginners.

Value for money

With a price in the middle segment for EDF-Jets, the E-flite Habu STS offers an excellent value for money. The following factors justify the investment:

• High quality pre-installed components
• Versatile (3S or 4S operation)
• Durability due to robust design
• Possibility to step up with SAFE technology

It should be noted that additional costs are incurred for recipients, battery and charger, which should be taken into account in budget planning.

Tips, tricks and optimizations

Battery optimisation

• Priority adjustment: Experiment with the position of the battery in the hull to fine tune the focus
• Capacity selection: 4000mAh batteries are recommended for longer flight times, more compact 3200mAh batteries can offer advantages in hot weather
• Connection types: If required, upgrade to IC3 plug system for better power transmission

Flight optimizations

• Rudder: Beginners should start with reduced knockouts and increase them with increasing experience
• Expo settings: 30-40% Expo on transversal and vertical rudders improve precision in flight
• Country approach: Longer, shallower flights with slightly elevated gas lead to more controlled landings

Technical improvements

• LAS system: The optional installation of the Landing Assist Sensor allows automatic "capturing" when landing
• Lighting: Retrofitable LED sets improve visibility in dawning flights
• Telemetry: With compatible remote controls, battery voltage and power consumption can be monitored during flight

Frequent questions and problems of users

Question: Is the Habu STS really suitable for absolute beginners?

Answer: The Habu STS can actually be flown with the right equipment (SAFE technology) by beginners who have never controlled an RC aircraft. However, for absolute beginners the RTF version (Ready-to-Fly) is recommended, which is already equipped with a spectrum DXS transmitter and the complete SAFE technology. The PNP version discussed here is aimed more at pilots who already have experience with remote controls or want to switch from trainer aircraft to jets.

Question: Which battery offers the best flight experience?

Answer: A 3S 4000mAh LiPo battery is recommended for beginners, offering enough power at a moderate pace. Advanced pilots can achieve more speed and climbing performance with 4S 3200-4000mAh batteries. The Smart G2 LiPo batteries from spectrum provide additional telemetry functions, but are not a must for operation.

Question: On what background can the jet start and land?

Answer: Thanks to the sturdy three-legged suspension with oversized tires, the Habu STS can operate on various substrates. Asphalted slopes are ideal, but also short mowed grass slopes and even compacted earth surfaces are possible. However, with very uneven terrain, pilots should be careful to avoid damage to the chassis.

Question: How does the PNP version differ from the RTF version?

Answer: The PNP version (plug-and-play) contains the aircraft with pre-installed motor, controller and servos, but requires a compatible receiver, remote control, battery and charger. The RTF version (Ready-to-Fly) comes with a spectrum DXS transmitter, an installed receiver and the SAFE flight technology, but still needs a separate battery and a charger.

Question: What common problems can occur and how to solve them?

Problem: Unintentional "Wackeln" or oscillation in flight
Solution: Check the focus and make sure it is in the recommended area. Reduce dual rate settings and increase the Expo values in your remote control.

Problem: Overheating of the engine or regulator
Solution: Ensure that the cooling air inlets are not blocked. Limit solid gas phases to 10-15 seconds. Use only the recommended battery types.

Problem: Unstable rolling behavior at start
Solution: Check if the wheels run freely and the boom is correctly aligned. Start with slightly pulled uphill and correct the direction gently with the side rudder.

Conclusion and recommendation for purchase

The E-flite Habu STS 70mm EDF Jet Smart PNP represents a significant advance in RC jet technology by significantly lowering the entry barriers for nozzle models. With its optimized design for improved slow flight characteristics, robust design and the ability to integrate advanced flight technology, it offers an excellent overall package.

This model is particularly recommended for:

• RC pilots who want to switch from propeller models to jets
• Advanced people looking for a reliable and good-natured EDF jet
• Model builders who value quality and expandability

With the right accessory and some exercise, this jet becomes a long-term companion that allows both relaxed flights and dynamic maneuvers. The investment in this quality product pays off through longevity, flight fun and the possibility to gradually increase your own skills.