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Propellers: direction, fit and replacement
Propeller diameter, pitch, blade count, centre bore and mounting method must match the motors and frame. A different propeller changes load and handling. Start with manufacturer recommendations.
Guide notes
Confirm the specification
Propeller diameter, pitch, blade count, centre bore and mounting method must match the motors and frame. A different propeller changes load and handling. Start with manufacturer recommendations.
Identify rotation direction
Use blade geometry and manufacturer markings to identify CW and CCW propellers. Match the FC motor layout, actual rotation and props-in or props-out configuration. Do not rely only on printed text facing upward.
Install in the correct order
Remove propellers for motor numbering, direction and failsafe tests. Disconnect the battery before installation. Check secure mounting and clearance. Never use software motor sliders with propellers fitted.
Inspect before every flight
Replace cracked, bent, chipped or impact-damaged propellers. Check fasteners, clearance and motor bells. If the aircraft flips on arming, stop immediately and check numbering, rotation, propellers and FC orientation.
Official documentation & further reading
- Betaflight: motors tab:https://betaflight.com/docs/wiki/app/motors-tab
References checked: 2026-10-02. MINIFLYGO checklists do not replace the exact device manual.
Related tutorials
Written checklistComponents / Written guide
Frame: dimensions, screws and wiring
Check supported propeller size, FC mounting pattern, camera width, motor mounting, internal height and battery mounting. Digital video systems also need sufficient transmitter space, cable clearance and cooling.
Written checklistComponents / Written guide
Video transmission: power, antennas and control
Analog and digital systems use different cameras, transmitters, goggles and control protocols. Check compatibility, voltage, dimensions and cooling for the exact components. Matching connectors do not prove compatibility.
Written checklistComponents / Written guide
Brushless motors: selection and propeller-free testing
Stator dimensions, KV, shaft diameter, mounting pattern and supply recommendations are separate specifications. KV describes unloaded speed per volt, not thrust. Use the manufacturer's battery and propeller recommendations.
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