Gemfan Vortex 7x9 Glass Fiber Nylon 3-Blade Electric Propeller (2 pcs)

The Gemfan Vortex 7x9 (model 7X9X3) is a three-blade, high-pitch electric propeller for fast fixed-wing aircraft and other high-speed electric UAVs. It comes in packs of two in the rotation you select.

Key features

• Three blades on a 7 in disc give more blade area than a two-blade prop of the same diameter, for strong propulsion at high RPM
• 9 in pitch for high forward speed
• Glass-fibre reinforced nylon adds stiffness and resists blade deformation under load
• CFD-optimised Vortex profile with a frosted leading edge and ultra-thin tips to reduce vortex losses and noise; anti-skid hub texture and factory dynamic balancing
• Matched to 3210-size motors on aircraft of around 1.1 kg take-off weight
• Available as CCW (7X9X3E, standard rotation) or CW (7X9X3R, reverse rotation)

Specifications

• Diameter: 7 in (177.8 mm)
• Pitch: 9 in
• Blades: 3
• Hub thickness: 7 mm
• Centre bore: 5 mm
• Max blade width: 20.5 mm
• Weight: 11.6 g
• Recommended motor: 3210
• Recommended take-off weight: 1.1 kg
• Colour: Grey

The 5 mm bore fits 5 mm shafts and prop adapters directly. CCW (E) is the standard prop for a conventional nose-mounted tractor motor; CW (R) suits a pusher mount or the second motor of a twin, where opposite rotation cancels torque.