Product overview
The CKESC FLY 35A from Nanchang Changkong Technology Co., Ltd. is an electronic speed controller for fixed-wing propulsion systems. Its 62 × 25 × 10 mm dimensions and 26 g weight, including wiring, define the space and mass needed for installation. The electrical configuration supports 3–4S operation and includes a switching step-down BEC rated at 5 V, 3 A. Power filtering uses a Rubycon electrolytic capacitor alongside high-capacity ceramic capacitors, while synchronous freewheeling is enabled by default.
Current ratings distinguish sustained operation from short bursts: 35 A continuous requires specific cooling, with 40 A specified for 30 seconds and 50 A for two seconds. The throttle range is 1000–2000 µs, and standard and high-speed versions have different motor-speed figures by pole count. Protection covers unsuccessful startup, stalls, overload, low voltage, overheating and signal loss. Above 115°C, power can fall to 40% of full-throttle output before recovering as temperature falls; a high-throttle stall can still damage the controller.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Nanchang Changkong Technology Co., Ltd., CKESC FLY 35A fixed-wing electronic speed controller |
| Rated specification | 35A 3~4S |
| Dimensions | 62 × 25 × 10 mm |
| Weight | 26 gIncluding wiring. |
| Voltage | 3–4S |
| Maximum continuous operating current | 35 ASpecific cooling conditions. |
| Maximum current | 40 A30 seconds. |
| Instantaneous current | 50 A2 seconds. |
| BEC | 5 V, 3 ASwitching step-down. |
| Standby current | 12 mAAt 16 V. |
| Throttle travel range | 1000–2000 µs |
| Standard-version rotational speeds |
|
| High-speed-version rotational speeds |
|
| Synchronous freewheeling | Synchronous freewheeling enabledEnabled by default. |
| Temperature monitoring | Dual temperature monitoring |
| Power filtering components | Rubycon electrolytic capacitor and high-capacity ceramic capacitors for power filtering |
| Firmware | Industrial-grade firmware |
| Low-voltage protection | Low-voltage protection to prevent battery over-discharge |
| Startup protection | Limits startup current and automatically retries startupUnsuccessful startup. |
| Stall protection | Attempts to restart following a stallMotor stalls during normal operation; a stall at high throttle may damage the ESC. |
| Overtemperature protection | Gradually reduces maximum output power, potentially down to 40% of full-throttle powerTemperature exceeds 115°C; original power returns after the temperature falls. |
| Overload protection | Limits maximum throttle to protect the propulsion systemExcessive motor load detected. |
| Signal-loss protection | Progressively reduces output power, rapidly lowers throttle below 50% within 1–2 seconds, then slowly reduces throttle until shutdownSignal lost for 200 ms. |
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