The ultimate guide to E-flite Pitts S-1S 850mm PNP (EFL3575) model aircraft

As an officially licensed replica of the iconic double-decker, the Pitts S-1S model from E-flite offers an exceptional flight experience for modelling enthusiasts. This PNP model (plug-and-play) combines true-scale design with impressive performance and is aimed at advanced pilots who are looking for a sophisticated yet reliable art flight model. In this comprehensive article we illuminate all the important aspects of this fascinating flight model.

Technical data and specifications

The E-flite Pitts S-1S 850mm, with its compact dimensions and sophisticated technical characteristics, is a true jewel for each model flight pilot:

The PNP model is supplied with pre-installed motor, controller and servos, but requires a separately available receiver, battery, charger and transmitter.

Performance and flight characteristics

Powerful drive

The high-performance brushless drive of the Pitts S-1S model is one of its highlight features. With a 3S LiPo battery, the system already provides impressive boost for dynamic art flight maneuvers. If you want even more power, you can easily switch to a 4S battery, thereby developing the ballistic flight characteristics model that even exceed the performance of the original.

Flight times

Flight times vary depending on the battery used and flight style:

• With a 2200mAh 3S LiPo: 8-10 minutes with moderate flight style
• With a 2200mAh 4S LiPo: 6-8 minutes for aggressive art flight

In the case of retained gas control and less demanding flight maneuvers, the flight times can be extended accordingly.

Increased power

The climbing performance of this art flight model can be described as impressive. With a 3S battery, the double-decker already shows a very good vertical performance. With a 4S battery, however, the flight model turns into a true rocket - almost vertical climbing flights are then easily possible, which offers considerable advantages in art flight figures.

Processing and material quality

The E-flite Pitts S-1S convinces with its high-quality processing. The EPO material used (Expanded polyolefin) offers several advantages:

• Robustness: The material is resistant to smaller falls and landings on uneven surfaces
• repairability: Damage can be easily eliminated with commercial adhesives
• Weight optimization: Despite its stability, the material is light enough for agile flight properties

The surfaces are cleanly processed and the scale details such as cockpit, spider and wheel linings give the model an authentic appearance. The aluminium suspension components provide additional stability for landings on different substrates.

Construction and preparation

Installation costs

A great advantage of the Pitts S-1S PNP model is the minimum assembly effort. Since the motor, controller and servos are already pre-installed, the assembly is limited to a few steps:

1. Mounting of the supporting surfaces
2. Installation of the chassis
3. Installation of the receiver
4. Connection of the servo cable
5. Insert and secure the battery

The entire assembly rarely takes more than 1-2 hours for beginners in model construction.

Quality of instruction

The included user manual is clearly designed and leads step by step through assembly. The numerous illustrations and detailed explanations of focus adjustment and rudder deflections are particularly helpful. For German-speaking users, the guide is also available in German, which additionally facilitates entry.

Target group and requirements

The E-flite Pitts model is primarily aimed at advanced pilots with experience in handling art flight models. While the flight behavior can be quite demanding due to its compact design and low weight, the possibility of installing a compatible receiver with stabilization functions offers a certain amount of space.

Ideally suited for:

• Advanced model pilots with art flight experience
• Ambitioned beginners using a receiver with stabilization system
• Pilots looking for a compact model with authentic scale look
• Model pilots who need a transport-friendly art flight model

Transport capacity

With a span of 850 mm and a length of 787 mm, the Pitts S-1S model is comparatively compact and easy to transport. The support surfaces can be removed for transport, so that the model can easily be accommodated in a medium-sized trunk. This property makes the double decker a popular companion for model flight trips.

It is recommended to purchase a suitable transport bag or box to avoid damage during transport. Many pilots use special foam inserts or self-built mounts to safely transport the model.

Spare parts supply

The spare part supply for the E-flite Pitts S-1S can be called excellent. As a product of Horizon Hobby/E-flite, an established manufacturer in the model construction sector, spare parts are available via different channels:

• Official Horizon Hobby/E-flite Dealers
• Specialized online model shop
• International dispatchers

Frequently requested spare parts include:

• Propeller
• Chassis components
• Servos
• Supporting parts
• Engine components

The good availability of spare parts ensures a long service life of the model, even with occasional repairs after demanding flight maneuvers or landing errors.

Customer reviews and experiences

The feedback from users of the E-flite Pitts S-1S 850mm model is predominantly positive. The following aspects are particularly praised:

Positive experiences

• Flight characteristics: Many pilots appreciate precise control and excellent art flight characteristics
• Processing: High-quality processing and robust design are often highlighted
• Optics: The true-to-scale look and detailing reaped much praise
• Performance: The power of the drive system, especially with 4S batteries, delights most users

Critical aspects

• Wind sensitivity: Some pilots report increased sensitivity in wind due to low weight
• Land behaviour: The suspension is occasionally described as somewhat sensitive in harder landings
• Visibility: With greater distance, the orientation can be challenging due to the symmetrical construction

Practical experience

An experienced pilot reports: "After over 50 flights with the Pitts S-1S, I can confirm that even after intensive use the model shows hardly any signs of wear. The flying properties are excellent for classic art flight figures, but also for more modern 3D maneuvers with 4S battery. I find it particularly impressive to find the rolling capability and precision in knife-flight figures."

Test results from the specialist press

In various specialist tests, the art flight model cuts well to very well. Test pilots especially praise:

1. The balanced weight distribution and the well-balanced focus from work
2. The precision of control in art flight maneuvers
3. Robustness in everyday use
4. Scaling and detailed execution

In a comprehensive test, the double-decker reached 9 out of 10 points for its flight characteristics and 8 out of 10 points for the price-performance ratio.

Comparison with alternative products

To enable an objective overview, we compare the E-flite Pitts S-1S with similar models on the market:

Strengths against competitors

• Detailling: The E-flite Pitts S-1S offers more scale details than many competition models
• Processing: The quality of components and processing is above average
• Performance: The ratio of weight to engine power is particularly favorable
• Spare parts supply: Better availability of spare parts by established manufacturers

weaknesses compared

• Size: Smaller dimensions than some competitors, making it a bit more difficult to fly
• Wind vulnerability: Less stable with strong wind than larger/heavy models
• Price: Compared to No-Name products slightly higher price

Value for money

The Pitts model by E-flite is positioned in the middle price segment for high-quality scale art flight models. Given the quality, flight characteristics and longevity offered, the price-performance ratio can be rated as good to very good.

It should be borne in mind that additional components are required for operation:

• RC transmitter (if not available)
• Suitable receiver
• LiPo batteries (3S or 4S)
• Charger

These additional costs should be included in the purchase decision, but if components from other model construction projects are already available.

Tips, tricks and optimizations

Flight optimizations

1. Priority: For precise art flight, a focus is recommended slightly before the position specified in the guide.

2. Rudder: For beginners, it is recommended to reduce breaks (dual rate):

   • Swinger: 70% for normal, 100% for art flight
   • Altitude: 65% for normal, 100% for art flight
   • Side rudder: 75% for normal, 100% for art flight

3. Expo settings: For softer control characteristics around the neutral position:

   • Querruder: 25-30% Expo
   • Altitude: 20-25% Expo
   • Side rudder: 15-20% Expo

Technical optimizations

1. Motor tuning: A slightly modified propeller (e.g. 10x6 instead of standard propeller) is suitable for even more performance.

2. Battery optimisation: High-quality LiPos with high C rate (at least 30C) significantly improve the power output.

3. CG tuning: By moving the battery, the center of gravity can be finely adjusted to achieve the desired flight behavior.

4. Suspension reinforcement: A slight reinforcement of the chassis with carbon rods increases the robustness in landings.

Maintenance tips

1. Regular control: After each day of flight, all moving parts and connections should be checked for a fixed seat.

2. Battery care: LiPo batteries should always be brought to storage voltage (3.8V per cell) and stored coolly.

3. Cleaning: Especially after flying on grassy slopes, the model should be freed of dirt to protect the mechanics.

4. Servo check: Regular checking of servos for unusual noises or delays increases operational safety.

Community support and resources

E-flite Pitts S-1S enjoys active community support. The following resources provide valuable help:

• Online forums: Special threads in RC forums such as RCGroups or Modellpilot.eu
• Video tutorials: Numerous YouTube channels offer installation and flight instructions
• Facebook groups: Specific groups for e-flite models and art flight enthusiasts
• Manufacturer support: Horizon Hobby offers extensive technical support

These resources are particularly valuable for beginners who want to benefit from the experience of other pilots or need support in technical issues.

Frequent questions and solutions

"How can I improve the visibility of the model?"

Many pilots ask this question because the symmetrical construction of the double-decker can make orientation more difficult at a greater distance. Solution approaches:

• Color marking: Different colors for upper and lower surfaces
• LED lighting: Installation of colored LEDs at strategic positions
• Highly visible stickers: Mounting fluorescent markings

"Which receiver is best?"

This question is frequently asked as the PNP model does not contain a receiver:

• For beginners: Spectrum AR631 with AS3X and SAFE Select Technology
• For Advanced: Compact 6-channel receiver without stabilization
• For maximum performance: lightweight 6-channel receiver with minimal latency

"How can I reduce wind sensitivity?"

A recurring topic in user discussions:

• Weight increase: Easy increase in flight weight due to heavier batteries
• Priority optimization: Easy to move forward for more stability
• Customize flight style: Fly higher speeds at wind and reduce blows

"How can I extend the battery life?"

A common question especially in intensive art flight:

• Throttle Management: Conscious gas lifting and removal
• Increased capacity: Use of 2200mAh instead of 1800mAh batteries
• Efficiency: Optimization of the propeller for higher efficiency instead of maximum performance
• Flight style: Less aggressive maneuvers and more gliding phases

"How do I repair minor damage to EPO material?"

Practical tips for the frequently occurring question of repair possibilities:

• Small cracks: UHU Por or special EPP/EPO glue
• Vaccines: Reinforcement with carbon fiber rods and EPO-compatible adhesive
• Dentists: Careful heating with hot air gun and shaping
• Torn parts: Strengthen connection with toothpicks and then glue

Conclusion and recommendation for purchase

The E-flite Pitts S-1S 850mm PNP represents a balanced art flight model that convinces both with its authentic appearance and its excellent flight characteristics. The strengths are clearly in the high-quality processing, the powerful drive system and the precision of art flight maneuvers.

The model is particularly suitable for:

• Advanced pilots interested in true scale art flight
• Model flyers looking for a compact and transport-friendly aircraft
• Pilots who value quality and longevity

Beginners should consider that the flight behaviour can be quite demanding, especially in wind or with a 4S battery. With a stabilizing receiver and reduced engine power, however, entry can be facilitated.

In view of the quality offered, the extensive equipment and excellent flying characteristics, the double decker is a convincing overall package worth its money. If you are looking for an authentic scale art flight model with impressive performance, this model will have a lot of pleasure.