Gemfan Vortex 6x4 Glass Fiber Nylon Fixed-Wing Propeller (2CW+2CCW)

The Gemfan Vortex 6x4 is a two-blade electric propeller from Gemfan's Vortex fixed-wing range, moulded in glass-fibre-reinforced nylon. The set holds two standard-rotation 6x4E and two reverse-rotation 6x4R props (2 CW + 2 CCW), so one pack covers a single-motor plane with spares or a twin-motor airframe that needs a counter-rotating pair.

Key features

• CFD-optimised airfoil: blade profile shaped for efficient thrust on electric power.

• Frosted leading edge and thin tips: smoother airflow along the blade, with less tip-vortex loss and noise.

• Anti-slip hub faces: grip the prop adapter so the prop holds its position under load.

• Low rotating mass: 5.2 g per propeller.

• Adapter rings included: step the 6.35 mm (1/4 in) centre bore down to smaller shafts and prop adapters.

Specifications

• Diameter: 6 in (152.4 mm)

• Pitch: 4 in (101.6 mm)

• Blades: 2

• Material: Glass-fibre-reinforced nylon

• Hub diameter: 13 mm

• Hub thickness: 6.1 mm

• Centre bore: 6.35 mm (1/4 in)

• Weight: 5.2 g per propeller

• Colour: Dark grey

• In the box: 2 × 6x4E, 2 × 6x4R, adapter rings

With pitch well below diameter, a 6x4 favours static thrust and climb over top speed, a profile that suits trainers and slower park flyers. Check your motor maker's recommended prop range and confirm full-throttle current with a wattmeter before the first flight.