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MAD StableCore A508 is a 340KV drone arm set and integrated UAV power system designed for training drones and other multirotor platforms. The system combines a motor, FOC ESC and 18x5.7-inch folding propeller in a modular arm-mounted configuration. It supports 3-6S LiPo batteries, with 6S LiPo recommended for the listed system performance. The unit is compatible with 25 mm carbon tubes and provides CAN/PWM dual-protocol ESC communication. At 24 V sea level, the maximum rated thrust is 3.9 kg per axis, while the recommended takeoff weight is 1.2-1.5 kg per axis. It is suitable for training, aerial photography, surveying, mapping and other UAV applications where modular installation and maintenance are important.
Product Type
Training UAV power system arm set
Product Description
Integrated UAV Propulsion Arm
MAD StableCore A508 combines the motor, ESC and folding propeller in a compact propulsion arm configuration. The system is designed for modular UAV integration and supports a 25 mm carbon tube. Its integrated layout can help reduce installation complexity when building training drones and multirotor platforms.
Designed for Training UAV Applications
The A508 system is designed specifically for training UAVs and can also support applications such as aerial photography, surveying, mapping, security and police operations. The supplied data lists a maximum thrust of 3.9 kg per axis at 24 V sea level and a recommended takeoff weight of 1.2-1.5 kg per axis. Final selection should be based on the complete aircraft configuration and operating conditions.




Technical Parameters
· Model: MAD StableCore A508
· Product type: Training UAV power system arm set
· Motor model: A508 340KV
· Maximum thrust: 3.9 kg/axis at 24 V sea level
· Recommended takeoff weight: 1.2-1.5 kg/axis at 24 V sea level
· Recommended battery: 6S LiPo
· Battery range: 3-6S LiPo
· Maximum input voltage: 27 V
· Maximum peak current: 40 A (3S)
· Continuous current: 15 A with good heat dissipation
· Motor stator size: 50 x 8 mm
· Motor unit weight: 126 g
· Propeller: 18 x 5.7-inch folding propeller
· Propeller unit weight: 37 g/pc
· Unit combo weight: 312 +/- 10 g with propeller blades
· Compatible carbon tube: 25 mm
· Carbon tube depth: 31 mm
· Protection level: IP45
· Operating temperature: -20 to 50 °C
· ESC protocols: CAN and PWM
· Power cable: 16 AWG, 700 +/- 10 mm
· Signal cable: Flat cable, 850 +/- 10 mm
· ESC protections: Stall, overcurrent, MOS over-temperature, overvoltage/undervoltage and throttle-signal-loss protection
Want to Choose the Right Products for You?
Take a quick test to find the right propeller for you.
StableCore A508 System Highlights
· Designed specifically for training UAVs and multirotor platforms
· 340KV motor, integrated FOC ESC and folding propeller in one arm-mounted system
· Maximum thrust of 3.9 kg per axis at 24 V sea level
· Recommended takeoff weight of 1.2-1.5 kg per axis
· Supports 3-6S LiPo batteries, with 6S LiPo recommended
· Compatible with 25 mm carbon tubes
· CAN/PWM dual-protocol ESC communication
· IP45 protection level and operating temperature from -20 to 50 °C
· ESC protection functions include stall, overcurrent, over-temperature, voltage and throttle-signal-loss protection
Packaging and Shipping
· Product configuration: MAD StableCore A508 drone arm set.
· The current technical materials confirm the motor, FOC ESC and folding propeller configuration.
· Outer packaging dimensions, gross weight, package quantity and shipping details: To be confirmed.
· Please confirm the required quantity and complete aircraft configuration before ordering.
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Important Notes
· Confirm that the aircraft uses a compatible 25 mm carbon tube before installation.
· The system supports 3-6S LiPo batteries, while 6S LiPo is the recommended configuration in the supplied data.
· Check motor, ESC, CAN/PWM signal and power connections before applying power.
· The listed 3.9 kg/axis thrust value is specified for 24 V operation at sea level; actual performance depends on aircraft configuration, battery condition, propeller condition and operating environment.
· Confirm the complete aircraft takeoff weight and propulsion-system matching before flight.
· Perform a low-throttle startup and verify the ESC warning status before operating the UAV.