Longbow 7
Channel-arm 7-inch endurance quad, sized from the knowledge-base stiffness model.
The production CAD, live.
The same OpenSCAD geometry that goes to the printer, exported for the browser. Drag to orbit, or use the controls.
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Longbow 7 Mk2 stretches the 4Quad architecture to 7-inch props on a 290 mm wheelbase. Its 20 mm channel-section arms keep the first bending mode clear of the control band and carry an individual ESC in each arm. Built for longer observation flights on the 4S 5000 mAh pack, it keeps the locked 16 × 16 mm motor interface and the 4Quad's Pi 5 + Hailo-8L perception stack.
- Configuration
- Quad X · 7″ props · 290 mm wheelbase
- Arms
- 20 mm channel section, 3 mm walls · ESC in each arm
- Motors
- 2306 1700 KV specified · 45–50 A AM32 ESC per arm
- Power
- 4S 14.8 V 5000 mAh mission pack
- Perception
- Raspberry Pi 5 + Hailo-8L
- Airframe
- FDM PETG · 226 g frame set · Bambu A1, no supports
- Payload
- Sensors only · non-lethal
The rest of the family.
4Quad
The primary detection airframe. Printed, sliced, and on the bed for Test #1.
View platformHarrier
Six-arm endurance platform with the redundancy to keep observing after a motor fault.
View platformDetection Node
A stationary edge-AI node that shares the drone perception stack for fixed coverage.
View platform