Gemfan Vortex 20x13 Glass Fiber Nylon Electric Propeller (1 pc)

The Gemfan Vortex 20x13 is a 20-inch, 13-inch-pitch two-blade electric propeller in glass-fibre reinforced nylon, made for large electric fixed-wing aircraft and UAVs with high-power motors. It is sold as a single propeller in CW or CCW rotation.

Key features

• Glass-fibre reinforced nylon: tougher and stiffer than plain nylon, so the blades resist bending under high thrust loads and keep their shape over time.
• CFD-optimised blade profile: ultra-thin tips cut vortex losses and noise, and a frosted leading edge helps manage airflow at high RPM.
• Six hole adapters included: 3, 3.17, 4, 5, 6 and 8 mm, to match the motor shaft or prop adapter.
• Factory balanced: each propeller is dynamically balanced and inspected to keep vibration down.
• 96.8 g per propeller: with a 31.5 mm hub disc and 12.7 mm centre thickness.

Specifications

• Size: 20 x 13 in (diameter x pitch)
• Blades: 2
• Material: Glass-fibre reinforced nylon
• Weight: 96.8 g
• Hub disc diameter: 31.5 mm
• Centre thickness: 12.7 mm
• Centre hole: 6.35 mm (1/4 in)
• Hole adapters: 3, 3.17, 4, 5, 6 and 8 mm
• Rotation: CW or CCW (choose version)
• Quantity: 1 propeller

Choose CCW for a standard-rotation motor, and CW, the reverse-rotation version, for a reverse-spinning motor or the opposite side of a counter-rotating twin. A 20x13 prop draws heavy current at full throttle, so check your motor maker's prop chart or measure with a wattmeter before the first flight.