How to match an electric motor to an RC aircraft
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
Avian EF1 3545-1250Kv Brushless Outrunner Motor
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Avian EF1 3545-1250Kv Brushless Outrunner Motor is a Spektrum product intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum electric motor range.
- Intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter.
- Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
- Spektrum Smart compatibility is highlighted where relevant for batteries, chargers, ESCs or telemetry-aware systems.
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMXAM4630
- Product Family: Spektrum electric motor range
- Application: EF1 Race
- Compatibility Focus: Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
- Spektrum Category: Airplanes / Parts, Electronics & Accessories / Motors
- Input Voltage: 7.4 - 14.8V (2 - 4S Lipo)
- Motor Type: Brushless
- Adjustable Timing: No
- Connector Type: 3.5mm Bullet
- Motor Design: Outrunner
- Motor Limit: 1000W
- Number of Poles: 14
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
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How to choose the right ESC for an RC aircraft
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How to measure current draw with a Watt Meter
A step-by-step safety guide for measuring amps, watts and voltage sag so customers avoid overheating motors, ESCs and LiPo batteries.
How to prevent motor and propeller vibration
A safety and performance guide to propeller balance, spinner fit, bent shafts, motor mounts, firewall checks and protecting electronics from vibration.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMXAM4630 |
| Spektrum Category | Airplanes / Parts, Electronics & Accessories / Motors |
| Connector Type | 3.5mm Bullet |
| Product Family | Spektrum electric motor range |
| Application | EF1 Race |
| Compatibility Focus | Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering. |
| Adjustable Timing | No |
| Input Voltage | 7.4 - 14.8V (2 - 4S Lipo) |
| Motor Limit | 1000W |
| Product Length | 1.8" (46 mm) |
| Product Weight | 5.6 oz (159 g) |
| Motor Type | Brushless |
| Number of Poles | 14 |
| RPM/Volt (Kv) | 1250 |
| Outer Diameter | 1.4" (36 mm) |
| Shaft Diameter | 0.2" (5 mm) |
| Motor Design | Outrunner |
| Recommended Prop Range | 8x8 |
| Recommended Speed Control | Avian 80 Amp Brushless Smart ESC |
| Speed Control | Sold Separately |
Tags: Spektrum, SPMXAM4630, Spektrum electric motor range, Spektrum Catalog, Spektrum Motors, Spektrum Aircraft Electronics, RC-MODEL