Gemfan Vortex 19x12E Glass Fiber Nylon Electric Propeller

The Gemfan Vortex 19x12E is a large two-blade electric propeller for big fixed-wing aircraft: 19 inches across, 12 inches of pitch, moulded in glass-fibre-reinforced nylon.

Key features

• Vortex blade with a CFD-optimised airfoil developed for electric propulsion

• Textured leading edge for efficiency at high RPM

• Slim blade tips and a streamlined profile reduce noise and tip vortices

• Wide 31.5 mm hub with an anti-slip surface for mounting stability

• Factory tested with dynamic balance control for smooth running

Specifications

• Model: Vortex 19x12E

• Diameter: 19 in (482.6 mm)

• Pitch: 12 in (304.8 mm)

• Blades: 2

• Hub diameter: 31.5 mm

• Hub thickness: 12.2 mm

• Centre bore: 6.35 mm (1/4 in)

• Weight: 83.9 g

• Material: Glass-fibre-reinforced nylon

• In the box: 1 × 19x12E propeller

The 6.35 mm (1/4 in) bore fits a matching prop adapter directly; on a smaller motor shaft, use a reducer ring or an adapter sized to the shaft. A 19-inch prop sweeps a 241 mm radius, so check ground and fuselage clearance, and run it only on a motor and ESC rated for 19-inch props on your cell count. Balance-check and bench-test current draw with a watt meter before the first flight.