Gemfan Vortex 12x8 Glass Fiber Nylon Electric Propeller

The Gemfan Vortex 12x8 is a two-blade electric propeller for fixed-wing aircraft, 12 inches across with an 8-inch pitch and moulded in glass-fibre-reinforced nylon. It sits between the thrust-oriented 12x6 and the speed-oriented 12x10 and 12x12 in the same range, balancing static thrust against airspeed. The pack holds one 12x8E (CW) and one 12x8R (CCW).

Key features

• Counter-rotating pair for twin-motor planes, or a matched spare set for a single-motor model
• 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 12x8E (CW) / 12x8R (CCW)
• Diameter: 12 in (304.8 mm)
• Pitch: 8 in (203.2 mm)
• Blades: 2
• Hub diameter: 20.2 mm
• Hub thickness: 10.9 mm
• Centre bore: 6.35 mm (1/4 in)
• Weight: 30.4 g per prop
• Material: Glass-fibre-reinforced nylon
• In the box: 1 × 12x8E, 1 × 12x8R, reducer ring set

Before the first flight, check the 12x8 against your motor maker's prop chart for your cell count and confirm current draw with a watt meter.