Product overview
The Gemfan FLASH 2540 is a polycarbonate propeller for freestyle and racing micro drones, with applications including agility training, rapid climbs and indoor or outdoor flying. Its three-blade architecture pairs a 2.5-inch diameter with a 4-inch pitch, targeting quick thrust response and sustained output during demanding maneuvers. Each propeller weighs approximately 0.98 g. The physical design includes a reinforced hub intended to support stable power transfer and reduce vibration during operation.
Integration centers on a three-hole fixed mounting interface, a 9.2 mm hub diameter and a 5 mm hub thickness. Maximum blade width is 9.9 mm, completing the principal dimensions relevant to installation space. The recommended motor is the 1105, with compatibility specified for 1104–1106 motor classes and installation on compatible motors. Supply consists of eight propellers per pack: four clockwise and four counterclockwise units. This is a propulsion component pack for a micro drone build.
