Product overview
The Gemfan 7140 PC 3 Blade, designated Gemfan 7140-3, is a propulsion component for drones used in high-altitude filming and photography. Its three-blade architecture combines PC material with a 4in pitch and a 180.34mm overall diameter. The black propeller weighs 9.8g and has a maximum width of 22.8mm. This configuration targets the thrust and flight-efficiency demands of plateau and thin-air operations, including aerial imaging applications where stable flight is a central design objective.
For mechanical integration, the propeller has a 7mm center thickness and a 5mm center hole inner diameter. Gemfan recommends a 2808 1300kv motor, providing a specific motor reference for propulsion-system selection. Its surface treatment pairs a frosted front with a glazed rear to support stability and reduce the likelihood of losing control at high RPM. The resulting hardware configuration is a black PC tri-blade propeller intended for high-altitude drone propulsion and imaging work.
