The Eclipson Cobra is a compact, high-performance 50 mm EDF sport jet designed for pilots who want jet speed without oversized logistics. Sleek lines, efficient aerodynamics, and a smart internal layout make the Cobra a standout in the 3D-printed EDF category.
This listing is for a complete 3D-printed airframe kit. All structural printed parts are included.
Electronics, hardware, and adhesives are NOT included.
EDF Size: 50 mm
Wingspan: ~900 mm
Length: ~860 mm
Tail Configurations: V-Tail (standard) / T-Tail (optional design)
Designed For: 4S EDF power systems
Skill Level: Intermediate to Advanced
All 3D-printed fuselage sections
Wing panels and internal structure
Tail surfaces (V-tail configuration)
Integrated landing gear mounts
Control surface hinges (printed)
Ducting and EDF mount structure
(Unassembled airframe only)
Power System
50 mm EDF unit (4S-capable)
EDF motor matched to 50 mm fan
ESC: 30–40 A (4S rated)
Radio & Control
Servos:
4× 9g micro servos (ailerons + tail mix)
Receiver: Minimum 5 channels
Transmitter capable of V-tail mixing (or flight controller)
Battery
4S LiPo
1300–2000 mAh
≥40C recommended
Carbon fiber or steel pushrods (≈1.2 mm)
Pushrod connectors or Z-bends
Assorted M2 screws (M2×6 / M2×8 typical)
2 mm steel rod (control link support)
Velcro (battery retention)
Rubber bands (as specified in build)
CA glue (cyanoacrylate)
Designed for PLA or LW-PLA
Lightweight builds improve EDF efficiency
Modular design allows damaged parts to be re-printed or replaced
True 50 mm EDF performance in a compact footprint
Fast, clean, and agile flight characteristics
Efficient ducting and internal airflow
Easy repair compared to molded foam jets
Proven Eclipson design with strong community support
Color varies by production batch
Dry-fit before gluing recommended
CG setup is critical — slightly nose-heavy for maiden flights
About Us
Printed, packed, and shipped by Raven Dynamics in the USA.
We Make Things Fly!