Gemfan Vortex 5.25x8 Glass Fiber Nylon Electric Propeller

The Gemfan Vortex 5.25x8 is a small, high-pitch two-blade electric propeller for fixed-wing aircraft: 5.25 inches across with 8 inches of pitch, moulded in glass-fibre nylon. Pitch well beyond the diameter is a speed-oriented layout that gives up static thrust for a high pitch speed. The set contains four props, two 5.25x8E (CW) and two 5.25x8R (CCW).

Key features

• Glass-fibre nylon construction for strength and durability

• CFD-optimised airfoil with streamlined blades

• Frosted leading edge for smoother airflow

• Thin blade tips reduce noise and tip vortices

• Anti-slip hub surface for secure mounting; adapter rings included

Specifications

• Model: Vortex 5.25x8E (CW) / 5.25x8R (CCW)

• Diameter: 5.25 in (133.35 mm)

• Pitch: 8 in (203.2 mm)

• Blades: 2

• Hub diameter: 13 mm

• Hub thickness: 6 mm

• Centre bore: 6.35 mm (1/4 in)

• Weight: 3.8 g per prop

• Colour: Dark grey

• In the box: 2 × CW, 2 × CCW, adapter rings

These are bored fixed-wing props for a prop adapter, not press-on multirotor props. High-pitch props load a motor heavily for their size, so check your motor maker's chart and measure current with a watt meter before the first flight.