Overview
The Spektrum Avian 40-Amp Dual SMART ESC Version B is a versatile electronic speed controller designed for RC enthusiasts in the UK who demand reliable, feature-rich performance. This dual-channel ESC represents a significant step forward in brushless motor control technology, offering dedicated main and tail motor channels in a single, compact unit. Whether you're piloting a helicopter, multi-rotor aircraft, or any RC model requiring independent motor control, the Avian 40-Amp Dual delivers the precision and stability that serious RC pilots expect. The SMART technology integration means your ESC communicates seamlessly with compatible Spektrum batteries, providing real-time telemetry and enhanced safety features that give you complete confidence in your flying.
Built for both experienced RC pilots and those stepping up to more advanced brushless systems, this ESC combines ease of use with professional-grade performance. The Version B designation indicates this is the latest iteration, incorporating refinements and improvements over earlier versions. At just £79.99, the Avian 40-Amp Dual SMART ESC Version B offers exceptional value for a dual-channel controller that can handle the demands of demanding RC applications across the UK market. This is the kind of component that discerning RC pilots choose when they want their aircraft or helicopter to perform at its absolute best.
The Spektrum Avian line has built a strong reputation among UK RC hobbyists for delivering consistent, dependable motor control across a wide range of applications. The 40-amp dual configuration makes this ESC particularly suited to mid-sized RC helicopters, aerial platforms requiring dual motor control, and other specialist RC applications where two independent motor channels are essential.
Key Features
- Dual 40-Amp Motor Channels — This ESC provides two independent 40-amp channels, allowing you to control both a main motor and tail motor simultaneously with complete independence, which is essential for helicopter flight stability and precise aircraft manoeuvres.
- SMART Battery Technology Integration — The SMART designation means this ESC is fully compatible with Spektrum SMART batteries, enabling automatic battery recognition, real-time cell voltage monitoring, and built-in safety protocols that protect both your battery and ESC from damage.
- Brushless Motor Compatibility — Engineered specifically for brushless motors, this ESC delivers smooth, precise power delivery with programmable features that allow experienced pilots to fine-tune performance characteristics to match their specific flying style and aircraft requirements.
- Compact, Lightweight Design — The streamlined form factor minimises weight and allows installation in tight spaces, which is particularly valuable in RC helicopters and aerial platforms where every gram counts toward overall flight performance.
- User-Programmable Settings — Advanced pilots can customise throttle curves, timing, governor functions, and other parameters using compatible programming devices, ensuring the ESC behaves exactly as you need it to.
- Professional-Grade Reliability — Spektrum's reputation for quality control and durability means you can rely on this ESC for consistent performance flight after flight, whether you're practising, training, or competing.
Technical Performance
The Avian 40-Amp Dual SMART ESC Version B is engineered with precision electronics that deliver stable, responsive power management to dual brushless motors. Each channel is independently rated for up to 40 amps continuous current, providing headroom for responsive acceleration and sustained power delivery even in demanding flight conditions. The ESC accepts input from 2S through 4S LiPo batteries (7.4V to 14.8V), covering the most common voltage configurations used in mid-sized RC helicopters and dual-motor aircraft throughout the UK. The SMART technology integration ensures that compatible batteries communicate their charge status, cell voltage, and health information directly to the ESC, providing you with real-time performance data and early warning if any issues develop. Build quality reflects Spektrum's commitment to reliability, with robust solder joints, quality capacitors, and protective circuitry throughout. The dual-channel architecture allows independent throttle control of main and tail motors, with programmable mixing and governor functions that enable helicopter tail rotor governors to maintain consistent rotor speed regardless of main rotor load. Whether flying indoors or outdoors, in calm conditions or gusty winds, this ESC provides the stable, responsive motor control that separates adequate performance from excellent performance.
What's in the Box
- Avian 40-Amp Dual SMART ESC Version B
- Servo connector leads for main and tail motor channels
- Documentation and programming information
Frequently Asked Questions
- Is the Avian 40-Amp Dual SMART ESC Version B suitable for RC helicopter beginners? — This ESC is suitable for intermediate to advanced RC pilots. If you're completely new to brushless RC helicopters, you might want to start with a simpler single-channel ESC before stepping up to dual-channel control. However, if you've already flown helicopters and are upgrading to brushless power, this is an excellent choice that will serve you well.
- What batteries does this ESC work with? — The Avian 40-Amp Dual SMART ESC Version B accepts 2S, 3S, and 4S LiPo batteries (7.4V, 11.1V, and 14.8V respectively), as long as they feature Spektrum SMART battery connectors. This covers the most common configurations used in mid-sized RC helicopters. Always verify your specific battery is SMART-compatible before use.
- What is the difference between Version B and earlier versions? — Version B represents the latest iteration of the Avian dual 40-amp design, incorporating refinements and improvements discovered through real-world flying. If you have access to both versions, Version B is the newer, more refined option and represents the current standard.
- Can I use this ESC with non-SMART batteries? — Whilst the SMART features won't function with standard LiPo batteries, the ESC will still operate and provide motor control. However, you lose the benefit of real-time battery monitoring and safety features, so SMART batteries are strongly recommended.
- How do I programme this ESC? — The Avian 40-Amp Dual is fully programmable using compatible Spektrum programming devices. Refer to the included documentation for detailed programming instructions, or consult with experienced RC pilots in your local UK RC flying community who can guide you through the process.
- What size RC helicopter can this ESC handle? — At 40 amps per channel, this ESC is sized for mid-range RC helicopters with proportional main and tail motors. For very small indoor helicopters, a lighter controller would be more appropriate, whilst for large scale 700+ class helicopters, you'd want a higher-amperage unit.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the SPM Avian 40-Amp Dual SMART ESC Version B P-SPMXAE0240B today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
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