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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.
Guide notes
Read the specifications
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.
Check the expected load
Aircraft weight, propeller size, pitch and battery voltage affect load. Compare manufacturer thrust data with ESC capability. Power wiring, connectors and the battery must also support the intended configuration.
Inspect the installation
Turn each motor by hand and check bearings, bell, magnets and cables. Screws must not reach the windings. Secure motor wires to the arms with repair slack and adequate propeller clearance.
Test without propellers
Use the Betaflight Motors tab to check numbering and direction with short, low-output tests. Disconnect for rubbing, unusual sound, failure to spin or rapid heating. Repeat after motor or ESC replacement.
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.
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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.
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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
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.
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