Gemfan Vortex 12x12 Glass Fiber Nylon Electric Propeller (CW+CCW Pair)

Gemfan's Vortex 12x12 is a square-pitch, two-blade electric propeller for fixed-wing aircraft: 12 inches of diameter and 12 inches of pitch, moulded in glass-fibre-reinforced nylon. The pack holds one 12x12E (CW) and one 12x12R (CCW), the counter-rotating pair a twin-motor plane needs, or a spare for a single-motor model.

Key features

• Square pitch advances twice as far per revolution as a 12x6 in theory, favouring airspeed over static thrust

• CFD-optimised Vortex airfoil with an optimised leading edge for high-RPM efficiency

• Slim blade tips reduce noise and vortex loss

• Textured hub surface for a secure fit on the prop adapter

• Factory tested and dynamically balanced; reducer rings for 3, 3.17, 4, 5, 6 and 8 mm shafts included

Specifications

• Model: Vortex 12x12E (CW) / 12x12R (CCW)

• Diameter: 12 in (304.8 mm)

• Pitch: 12 in (304.8 mm)

• Blades: 2

• Hub diameter: 20.2 mm

• Hub thickness: 13 mm

• Centre bore: 6.35 mm (1/4 in)

• Weight: 31.7 g per prop

• Material: Glass-fibre-reinforced nylon

• In the box: 1 × 12x12E, 1 × 12x12R, reducer ring set

A square-pitch 12-inch prop draws noticeably more current than a lower-pitch prop of the same diameter, so check it against your motor's prop chart and measure current with a watt meter before the first flight.