Emax 2 Pairs 40mm 4-Blade Propellers For EZ Pilot FPV Racing Drone

Emax 2 Pairs 40mm 4-Blade Propellers for EZ Pilot

These Emax 40 mm 4-blade propellers are described as specially engineered for the Emax EZ Pilot FPV racing drone. The page mentions a balance of thrust, stability and durability.

The pack has two pairs (2 CW and 2 CCW) in red for visibility. The page lists a price of Rs. 171 and also shows a Sold out marker even though the stock line says in stock.

Key features

• 40 mm, 4-blade: for thrust and stability.

• Red colour: for in-flight visibility.

• 2 CW and 2 CCW props: in the pack.

• Made for the Emax EZ Pilot: the listed compatibility.

• Durable construction: for high-speed flying.

• FPV racing and freestyle: per the listing.

How a propeller works

A drone propeller converts motor torque into thrust. Each blade is an aerofoil: as the motor spins the prop, the blades push air downward and the reaction force lifts the aircraft. Diameter and pitch set how the prop behaves. A larger diameter moves more air and suits efficient, lower-RPM flight, while a higher pitch moves the aircraft forward faster per revolution but demands more current from the motor.

Multirotors use pairs of props that spin in opposite directions. Clockwise (CW) and counter-clockwise (CCW) props cancel out the torque reaction so the aircraft does not spin, and the flight controller changes individual motor speeds to steer. Always fit each prop on the motor that turns the matching direction, and check your flight controller motor-direction settings before the first flight.

Fit and balance matter. The hub hole or shaft size must match your motor shaft, and the prop should sit flat and tight with the retaining nut fully secured. Check every blade for chips, cracks and bends before each flight, because a damaged prop causes vibration that shows up as jello in the video and extra heat in the motor. Replace props after a hard crash instead of flying on a damaged set.