Introduction
This manual provides comprehensive instructions for the assembly, operation, and maintenance of your robbe Happy-Fly Electric Glider Assembly Kit 3157. Please read this manual thoroughly before beginning assembly or operation to ensure safe and correct usage. This product is an electric glider model designed for enthusiasts aged 14 years and older.
Safety Information
Always prioritize safety when assembling and operating your electric glider.
- Adult Supervision: This product is recommended for ages 14 and up. Younger users should always be supervised by an adult.
- Assembly: Follow all assembly instructions carefully. Incorrect assembly can lead to malfunction or injury.
- Battery Safety: The product is battery-powered (batteries not included). Use only recommended battery types and follow all battery charging and handling safety guidelines. Do not short-circuit or expose batteries to extreme temperatures.
- Operating Environment: Operate the glider in open, clear areas away from people, animals, buildings, power lines, and other obstacles. Avoid flying in strong winds or adverse weather conditions.
- Pre-Flight Check: Always perform a thorough pre-flight check to ensure all components are securely attached and functioning correctly.
- Maintenance: Regularly inspect the glider for damage or wear. Do not operate a damaged glider.
- Not a Toy: While categorized as a toy, this is a sophisticated model aircraft requiring careful handling and operation.
Package Contents
The robbe Happy-Fly Electric Glider Assembly Kit 3157 includes the following components:
- Glider airframe components (wings, fuselage, tail sections)
- Electric motor and propeller assembly
- Control surfaces (ailerons, rudder, elevator)
- Small parts bag (screws, connectors, pushrods, hinges)
- Instruction manual (this document)
Note: Batteries, charger, and remote control are not included and must be purchased separately.
Setup and Assembly
Assembly of the Happy-Fly Electric Glider requires patience and attention to detail. Ensure you have a clean, well-lit workspace.
- Unpack Components: Carefully remove all parts from the packaging and verify against the package contents list.
- Fuselage Assembly: Assemble the fuselage sections according to the diagrams. Secure all joints with appropriate adhesive (not included, recommended type specified in diagrams).
- Wing Attachment: Attach the wings to the fuselage. Ensure they are securely seated and aligned.
- Tail Section Installation: Install the horizontal and vertical stabilizers. Pay close attention to alignment for proper flight characteristics.
- Motor and Propeller: Mount the electric motor securely in its designated position. Attach the propeller, ensuring it is balanced and facing the correct direction for thrust.
- Control Surface Linkages: Connect the pushrods from the servos (if applicable, or direct linkages) to the control surfaces (ailerons, rudder, elevator). Ensure free movement and correct throw.
- Electronics Installation: Install your receiver, Electronic Speed Controller (ESC), and servos (if not pre-installed) into the fuselage. Secure wiring to prevent interference with moving parts.
- Battery Compartment: Ensure the battery compartment is accessible and secure for battery installation.
- Center of Gravity (CG): Crucially, balance the glider to achieve the recommended Center of Gravity (CG) as indicated in the assembly diagrams. This is vital for stable flight. Adjust battery position if necessary.

Figure 1: An assembled robbe Happy-Fly Electric Glider, showcasing its sleek white design with red "Happy-Fly" branding on the wings. The glider features a long, slender fuselage, broad wings, and a T-tail configuration, set against a clear blue background.
Operating Instructions
Once assembled and balanced, your Happy-Fly Electric Glider is ready for flight.
- Battery Installation: Insert the fully charged flight battery into the designated compartment, ensuring it is secured and connected correctly to the ESC.
- Transmitter Setup: Turn on your remote control transmitter first, then power on the glider's receiver. Ensure proper binding between the transmitter and receiver.
- Control Check: Before launch, verify that all control surfaces (ailerons, elevator, rudder) respond correctly to transmitter inputs. Check for full and free movement.
- Launch: For hand launch, hold the glider firmly and launch it into the wind with a gentle, level throw while applying throttle. For ground launch, ensure sufficient runway and apply throttle smoothly.
- Flight Control:
- Elevator: Controls pitch (nose up/down).
- Rudder: Controls yaw (nose left/right).
- Ailerons: Controls roll (wing tilt), used for banking turns.
- Throttle: Controls motor speed and altitude.
- Gliding: Once at desired altitude, reduce or cut throttle to enter gliding mode. Utilize thermals for extended flight.
- Landing: Approach the landing area into the wind. Reduce throttle and gently guide the glider down, flaring just before touchdown to reduce speed.
- Post-Flight: Disconnect the flight battery from the glider first, then turn off your transmitter. Inspect the glider for any damage.
Maintenance
Regular maintenance will extend the lifespan and performance of your glider.
- Cleaning: Wipe down the airframe with a soft, damp cloth after each flight to remove dirt and debris. Avoid harsh chemicals.
- Inspection: Before and after each flight, inspect all components for cracks, dents, loose connections, or wear. Pay close attention to wings, tail, propeller, and control linkages.
- Propeller Check: Ensure the propeller is free from nicks or cracks. A damaged propeller can cause vibrations and reduce efficiency. Replace if necessary.
- Battery Care: Store batteries in a cool, dry place. Do not leave batteries fully charged or fully discharged for extended periods. Follow manufacturer guidelines for battery charging and storage.
- Storage: Store the glider in a safe place, away from direct sunlight, extreme temperatures, and moisture. Consider disassembling wings for compact storage if needed.
- Spare Parts: Keep essential spare parts on hand, such as propellers, control horns, and pushrods, for quick repairs.
Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Glider does not respond to controls. |
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| Poor flight stability / difficult to control. |
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| Motor not spinning or weak thrust. |
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Specifications
| Feature | Detail |
|---|---|
| Brand | robbe |
| Model Name | Happy-Fly Electric Glider (Bandit des phoques) |
| Model Number | 229943 (Kit 3157) |
| Product Type | Electric Glider Assembly Kit |
| Recommended Age | 14 years and up |
| Main Material | Plastic |
| Assembly Required | Yes |
| Batteries Required | Yes (Not included) |
| Remote Control Included | No |
| Power Source | Battery Powered |
| Special Feature | Electric |
| Cartoon Character | Bandit des phoques (Seal Bandit) |
Warranty and Support
Information regarding specific warranty terms for the robbe Happy-Fly Electric Glider Assembly Kit 3157 is not provided in this manual. Please refer to the original product packaging or contact robbe customer support directly for warranty details and technical assistance.
For further support or to inquire about spare parts availability, please visit the official robbe website or contact your local distributor.
Manufacturer: Robbe Modellsport
Product Reference: 229943





