Master Airscrew MA0840NE Propeller 8x4 for Electric RC  [MA0840NE]

8x4 propeller — electric RC replacement blade

This Master Airscrew MA0840NE 8x4 propeller is offered as a replacement blade for electric RC aircraft. The 8x4 label means an 8-inch diameter with an approximate 4-inch pitch, commonly used where a balance between acceleration and cruise performance is desired. Hobbyists select this size when tuning propeller choice to motor and ESC characteristics.

Mounting notes: check the motor shaft diameter and hub style before attempting installation, and fit the correct collet or adapter rather than forcing a mismatch. Confirm the prop is fully seated and tighten locking hardware to the motor manufacturer's torque guidance to prevent slippage. Always verify rotation direction and blade orientation on the ground before first use; this prop is intended solely for electric RC applications.

Tuning guidance: swapping to a different diameter or pitch will change motor load and ESC current demand, so make incremental changes while monitoring motor and ESC temperatures. Balance the prop on a blade balancer to reduce vibration that can transfer to servos, linkages, and bearings. Small prop adjustments can refine throttle feel and cruise RPM without changing motor placement.

Maintenance advice: inspect blades for damage after each flying session, keep the hub interface free of debris, and replace any prop with visible structural issues. This is a hobby accessory and not suitable for full-scale use.