Product overview
The Gemfan 31mm 1219S PC 3 Blade is a three-blade PC propeller for lightweight Tiny Whoop aircraft, including competition builds and indoor technical tracks. Its physical design concentrates weight reduction in the hub while retaining blade thickness, reducing central rotating mass and rotational inertia. Each propeller weighs 0.18g, with a 31mm disk diameter, a nominal 1.2in size and a 1.9-inch pitch. This makes it a propulsion component for a micro drone build rather than a complete flight platform or airframe kit.
Integration centers on the motor shaft and the propeller’s physical dimensions. The mount accommodates 0.8mm or 1mm motor shafts, and the recommended motor is a 0702 29000KV unit. Center thickness is 3.4mm and maximum prop width is 7.3mm, providing dimensions for assessing the intended installation. The supplied package contains four clockwise and four counterclockwise propellers. Color choices comprise clear, clear gray, clear black, clear blue, clear green and clear purple; the package contents specify propellers only.
