Product description:   - Martin series long endurance non brush motor applicable to long endurance multi rotor UAV . The overall design of the motor is very low, so as to increase the stability of the motor. The high efficiency active heat sink is provided, which brings the super low temperature, and effectively improves the energy conversion efficiency.      - TAROT to performance of the CNC lathe and milling composite processing technology, high standard manufacturing the star motor, Martin series belong to the TAROT power matching updating new products, new products all through long time testing and tuning, in order to obtain a low power consumption and high lift to meet requirements of market of long endurance UAV.      - The new design of the folding rotor mounting seat adaptability is wide, general purpose conventional propeller and the installation of new Martin folding propeller. The base of the motor is made of high hanging design, which has a protective effect on the coil.      - Installation hole 19MM/ triangular mounting hole 27.7MM, compatible with the current mainstream of the market on the rack installation, the appearance of the consistency of the consistency with the traditional motor. The advantages of long service life, high efficiency, low power consumption, low noise and stable control of TAROT brushless motor are inherited.            Product parameters:   Support lithium section number: 6S   Recommended Propeller: 16-19 inch   Stator diameter: 40MM   No load current(@20V(A)): 0.7A   Stator end thickness: 12MM   Motor KV: 320KV   Motor external diameter: 44.6MM   Motor height: 23MM   Maximum continuous power: 580W   Motor weight: 110g         Product contains:   40012 Martin brushless motor * 1   Metal folding propeller base (44 * 10 * 2.5MM) 2.0G * 1   Carbon fiber folding propeller base clip (44 x 15 x 2.0MM)0.85Gx 1   A metal folding propeller base mounting screws: M3 * 4MM (half round head screw) 0.4g x 2   Rotor mounting screw: M3 * 11.3MM( screw sleeve) 0.6g x 2   Motor mounting screws: M3 * 8MM (half round head screw) 0.4g x 3   Spare motor mounting screws: M3 * 5MM (cup head screws) 0.4g x4   Teflon gasket (8 x 6 x 3 x 0.5MM) 0.05g x6      Note:   M3*5 screws for 650/680/690 frame   M3*8 screws for 750S1 Peeper   With Martin folding propellers, you can get more efficient         Related product number:   4008 Martin Hale brushless motor TL2955   4006 Martin Hale brushless motor TL2954   19.5 inch 49.53cm /4 TL2949 folding Martin carbon paddle TL2949   17.5 inch 44.45cm /4 TL2948 folding Martin carbon paddle TL2948   15.5 inch 39.37cm /4 TL2947 folding Martin carbon paddle TL2947   1865 Martin quick release carbon paddle TL2934   1555 Martin quick release carbon paddle TL2933