Product overview
The SIYI E8 Propulsion System combines a motor, electronic speed controller and 32-inch folding propeller in an integrated UAV propulsion assembly. Intended applications include drone training, inspection, crop spraying, suspended-load logistics and urban mapping. Maximum thrust is 18.5 kg per propulsion axis, while the recommended takeoff weight is 5–8 kg per axis, with thrust efficiency of 10–8 g/W at recommended thrust. The assembly fits a 40 mm mounting tube. Its motor and controller have independently arranged modules, allowing core components to be replaced individually during maintenance.
The propeller uses carbon-fiber-reinforced nylon, increased pitch and reinforced roots. Motor construction includes a PA66 upper cover with 30% glass fiber, N48SH magnets, NMB bearings and a dynamically balanced outer rotor. Control combines redundant PWM and CAN throttle inputs with full physical isolation of the controller's throttle signal. FOC vector control is optimized for UAV dynamics and incorporates SVPWM modulation and harmonic-injection suppression. The fully potted electronic speed controller has IPX6 ingress protection, while its flat layout and large cooling fins use propeller downwash for forced cooling.
At power-on, the E8 performs seven self-checks, including overvoltage, undervoltage, throttle state and missing motor phase, with coded audible and visual indications. During operation, it monitors stalled rotation, overheating and overcurrent, triggering multilevel warnings and returning fault codes when abnormalities occur. Maintenance functions include parameter adjustment, firmware updates, customizable navigation lights, flight-data recording and fault storage. Its cooling design combines an optimized centrifugal air duct and enlarged fan structure; the flat controller arrangement provides a stated 20°C reduction in controller core temperature compared with a stacked layout.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | SIYI E8 Propulsion System |
| Hardware configuration | Integrated propulsion system with independently arranged motor and electronic speed controller modules; core components can be replaced individually.Integrated propulsion assembly. |
| Maximum thrust | 18.5 kgPer propulsion axis. |
| Propeller size | 32 inch |
| Compatible tube diameter | 40 mmMounting tube. |
| Recommended takeoff weight | 5–8 kgPer propulsion axis. |
| Thrust efficiency | 10–8 g/WAt recommended thrust. |
| Propeller construction | Lightweight folding propeller made from carbon-fiber-reinforced nylon composite. |
| Propeller geometry | 32-inch propeller with increased pitch. |
| Propeller-root reinforcement | Specifically reinforced propeller roots. |
| Upper-cover material | PA66 with 30% glass fiber.Motor upper cover. |
| Flexural strength | 270 MPaMotor upper-cover composite material. |
| Temperature-resistance limit | 250°CMotor upper-cover composite material. |
| Motor magnets | N48SH high-performance magnets. |
| Motor bearings | Imported NMB bearings. |
| Rotor balancing | High-precision dynamic balancing.Motor outer rotor. |
| Throttle interfaces | PWM and CAN dual throttle redundancy. |
| Throttle-signal isolation | Full physical isolation of the throttle signal.Electronic speed controller. |
| Motor-control method | FOC vector control optimized for UAV dynamics, with SVPWM modulation and harmonic-injection suppression. |
| Ingress protection | IPX6; fully potted electronic speed controller.Electronic speed controller with full potting. |
| Cleaning provision | Direct rinsing with flowing water.After operation. |
| Motor-base architecture | Mesh motor base supports heat dissipation and filters particles encountered during operation. |
| Cooling improvement | Approximately 18% improvement in heat dissipation.Optimized centrifugal air duct and enlarged fan structure. |
| Controller core-temperature reduction | 20°C lower.Flat controller layout with oversized fins and forced cooling from propeller downwash; compared with a stacked layout. |
| Wire temperature rating | 200°CEnamelled motor wire. |
| Additional wire temperature rating | 250°CEnamelled wire. |
| Startup self-check | Seven checks, including overvoltage, undervoltage, throttle state and missing motor phase, with audible and visual coded indications.At power-on. |
| Runtime protection and fault reporting | Monitoring for stalled rotation, overheating and overcurrent; multilevel warnings and returned fault codes.During operation. |
| Endurance and environmental test durations | 1,000 hours of continuous aging; 48 hours of salt-spray testing; cyclic extreme-temperature testing from −20 to 50°C.Test exposures. |
| Maintenance and data functions | Parameter adjustment, firmware updates, customizable navigation lights, flight-data recording and fault storage. |
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