Spektrum Firma 80A Sensored/Sensorless Smart Outrunner Motor / ESC 2-in-1 Combo Overview
The SpektrumT 1/10th Scale Smart Sensored-Sensorless ESC + Motor Combo is a great choice for 1/10th scale crawlers and models running on 2S - 4S LiPo power. This 1700Kv motor features a low cog 12-pole, 14-magnet rotor design, CNC machined aluminum housing, insulated high-purity copper windings, high-quality alloy steel 3.175mm (1/8") output shaft, and precision bearings for durability and smooth rotation. This combo is specifically developed to provide ultra-smooth, low speed control, performance, and high reliability. The motor is preinstalled with 3.5mm gold-plated bullet connectors for easy installation, and perfectly matched for the included Firma 80A Smart ESC. This waterproof, 80A Sensored/sensorless ESC drives your 1/10th scale crawler or scaler through almost any conditions imaginable, with ultra-smooth control, performance, and reliability - while feeding real-time telemetry straight to your SpektrumT transmitter! This ESC includes the ability to disable drag brake from compatible SPM transmitters.
Spektrum Firma 80A Brushless Sensored Smart ESC, Outrunner (SPMXSE2060S) Features
Smart All-In-One Telemetry
Enable/Disable Drag Brake From Compatible Spektrum Transmitters
Fast, Powerful 32-Bit ARM M4 Processor
Multiple Programming Options
Multi-Point Protection
Waterproof (See Instructions For Details)
Spektrum Firma 3530-1700Kv 12-Pole Outrunner Brushless Motor, 3.175mm (SPMXSM7000) Features
2-4S LiPo Power Compatible
12-pole Outrunner
3.175mm Output Shaft
Pre-installed 3.5mm Gold-plated Bullet Connectors
Overview
The Spektrum Firma 80A Brushless Sensored/Sensorless Smart ESC is a feature-packed electronic speed controller designed specifically for 1/10th scale RC crawlers, scalers, and rock crawlers running on 2S to 4S LiPo battery power. This intelligent ESC represents the pinnacle of brushless motor control technology for the RC car UK market, delivering exceptional performance and reliability in challenging off-road conditions. Whether you're tackling rocky terrain, muddy tracks, or competitive crawling courses, this waterproof ESC provides the smooth, precise control that serious hobbyists and racers demand from their equipment.
What sets the Firma 80A apart in the ready to run RC and upgrade market is its Smart all-in-one design that combines power delivery, telemetry systems, and programmable features without requiring additional modules or external links. This brushless RC ESC is engineered for ultra-smooth low-speed control—a critical requirement for technical crawling where precise throttle input can mean the difference between conquering an obstacle and getting stuck. The 80-amp continuous rating with an impressive 480-amp maximum burst current means this ESC can handle the demands of high-torque crawling motors whilst maintaining stable, predictable power delivery across the entire throttle range.
Built on a fast, powerful 32-bit ARM M4 processor, the Firma 80A Smart ESC feeds real-time telemetry data directly to your compatible Spektrum transmitter, giving you instant feedback on motor performance, battery voltage, current draw, and other critical operating parameters. This level of intelligent monitoring transforms your RC experience, allowing you to optimise performance, protect your equipment, and extend battery life through data-driven decision making. The Firma 80A is the perfect choice for anyone serious about brushless RC crawlers and scalers who demands professional-grade electronics without the complexity of traditional setups.
Key Features
- Smart All-In-One Telemetry System — Rather than requiring separate telemetry modules, the Firma 80A integrates complete real-time data monitoring directly into the ESC itself, transmitting crucial performance metrics wirelessly to your Spektrum transmitter so you can monitor battery health, motor current, temperature and performance without additional equipment or complexity.
- Infinitely Adjustable Drag Brake — The drag brake function can be continuously adjusted on the fly from compatible Spektrum transmitters, giving you precise control over motor braking characteristics and reverse speed that can be fine-tuned for different terrain types and driving preferences without any physical adjustments to the ESC itself.
- Fast, Powerful 32-Bit ARM M4 Processor — This advanced processor delivers lightning-fast response times and smooth, refined motor control with minimal latency, ensuring your throttle inputs translate instantly into precise motor response for accurate crawling and technical manoeuvres.
- Brushless Sensored and Sensorless Operation — The ESC operates seamlessly with both sensored brushless motors (which provide smoother low-speed control) and sensorless brushless motors, offering maximum compatibility with a wide range of brushless motors in the RC crawler market and future upgrade flexibility.
- Multiple Programming Options — Comprehensive programming capabilities allow you to customise motor timing, acceleration curves, throttle response, voltage limiting and numerous other parameters to perfectly tune the ESC's behaviour to your specific motor, driving style and terrain requirements.
- Multi-Point Protection System — Advanced safety circuitry monitors multiple parameters simultaneously including input voltage, motor temperature, ESC temperature and current draw, automatically protecting your motor, battery and ESC from damage through intelligent cutoffs and thermal management.
- Waterproof Design — Sealed electronics with waterproof construction means this ESC can handle wet conditions, water crossings, mud and spray that would destroy conventional RC electronics, giving you the confidence to explore any terrain without fear of water damage (see full instructions for complete waterproof sealing details).
- 80A Continuous Current Rating — With an 80-amp continuous rating and 480-amp maximum burst capacity, this ESC delivers abundant power for high-torque crawling motors whilst maintaining stability and thermal management even during sustained high-demand operation on steep climbs and challenging terrain.
- 6V/7.4V BEC Output at 6A — The integrated Battery Eliminator Circuit provides regulated 6V or 7.4V power to your receiver and servos, eliminating the need for a separate battery to power your radio equipment and reducing overall system complexity and weight.
- IC3 and 3.5mm Bullet Connectors — Dual connector compatibility provides flexible battery and motor connection options, with standard 3.5mm gold-plated bullet connectors for motor connections ensuring excellent electrical contact and easy installation with compatible motors.
Technical Performance
The Spektrum Firma 80A represents a significant engineering achievement in brushless RC motor control technology, delivering performance characteristics specifically optimised for the demanding requirements of 1/10th scale crawlers and scalers. The 80-amp continuous current rating with 480-amp burst capacity provides exceptional power delivery for high-torque, low-KV brushless motors commonly used in technical rock crawling applications where raw power and precise speed control matter far more than outright top speed. The integrated 32-bit ARM M4 processor operates at speeds that enable exceptional responsiveness and smooth motor commutation, translating directly into the ultra-smooth throttle feel that separates professional-grade crawling electronics from consumer-level alternatives.
The ESC's sensored and sensorless operation modes provide maximum flexibility with modern brushless motor designs. Sensored operation utilises hall-effect sensors built into compatible brushless motors to deliver absolute precision in motor timing and commutation, resulting in extraordinarily smooth low-speed control—the defining characteristic required for technical crawling where millimetre-perfect throttle input can mean the difference between clearing an obstacle and rolling backward. The brushless motor technology offers superior efficiency compared to traditional brushed motors, generating less heat and delivering more consistent power delivery across varying battery voltages and load conditions.
The waterproof construction (following assembly guidelines in the detailed instruction manual) enables operation in conditions that would destroy conventional electronics—water crossings, muddy terrain, and spray-heavy environments all become accessible. The dual BEC configuration supporting both 6V and 7.4V outputs at 6-amp capacity provides flexibility for different servo requirements, whilst the integrated telemetry system continuously monitors system health, battery voltage, current draw and motor temperature, transmitting this data wirelessly to your Spektrum transmitter for real-time visibility into your RC system's performance and status.
What's in the Box
- Spektrum Firma Smart 80 Sensored/Sensorless Brushless ESC: Outrunner
- Comprehensive product manual with assembly, programming and operation instructions
What You Need to Complete
- Compatible Spektrum transmitter (such as Spektrum DX series or equivalent)
- Compatible Spektrum surface receiver with SmartPort connectivity
- 2S to 4S LiPo battery pack with IC3 connector (recommended 2S, 3S or 4S configurations)
- Brushless outrunner motor compatible with 80A ESC (sensored or sensorless)
Frequently Asked Questions
- Is the Spektrum Firma 80A suitable for beginners in RC crawling? — Whilst the Firma 80A is an advanced, professional-grade ESC with sophisticated features like programmable profiles and real-time telemetry, it is absolutely suitable for beginners because its intelligent protection systems, smooth control characteristics and straightforward default settings make it forgiving and reliable to use, even for hobbyists new to brushless RC. The learning curve is manageable, and the comprehensive manual provides clear guidance on basic operation and essential programming adjustments.
- What battery does the Spektrum Firma 80A need? — This ESC is designed for 2S, 3S or 4S LiPo battery packs, though it is particularly optimised for 2S and 3S operation common in 1/10th scale crawlers. The input voltage range supports the varying voltages delivered by these battery configurations, from fully charged 4S packs at 16.8 volts down to discharged battery cutoff thresholds. All batteries must use an IC3 connector or be compatible with the ESC's IC3 battery input connector.
- What makes sensored and sensorless operation important? — Sensored operation uses hall-effect sensors within the motor to provide perfect timing information to the ESC, delivering noticeably smoother low-speed control and more efficient power delivery—highly desirable for technical crawling. Sensorless operation eliminates the need for internal motor sensors, allowing use of simpler, more robust brushless motors. The Firma 80A's support for both operating modes means you have complete flexibility in motor selection and can upgrade your crawling platform without ESC limitations.
- How does the drag brake function improve crawling performance? — Drag brake simulates engine braking by gently loading the motor during deceleration and reverse, preventing your crawler from rolling uncontrollably downhill and providing better speed control on steep terrain. The ability to infinitely adjust drag brake on the fly from your transmitter means you can optimise braking feel for different slopes and surfaces without disassembling your RC crawler, making real-time tuning simple and convenient during driving sessions.
- What is the maximum burst current rating and why does it matter? — The 480-amp maximum burst current rating indicates this ESC can briefly handle extreme power demands when you're climbing steep obstacles or accelerating hard from a standstill. This massive burst capacity ensures the ESC never becomes the limiting factor in your system, delivering all available motor torque without throttling back, which is essential for conquering technical terrain where momentary power surges are common.
- Does the Spektrum Firma 80A work with non-Spektrum transmitters? — This ESC is specifically designed to work with Spektrum brand transmitters and receivers that support SmartPort telemetry connectivity. The telemetry features and advanced programming options utilise Spektrum's proprietary wireless protocol, so operation is optimised with genuine Spektrum radio equipment. For best results and access to all advanced features, use this ESC with compatible Spektrum transmitter and receiver combinations.
- What is the difference between the Firma 80A and previous ESC models? — The Firma 80A replaces earlier models like the SPMXSEMC22 and SPMXSEMC23, bringing enhanced processing power through the 32-bit ARM M4 processor, improved telemetry capabilities, more sophisticated programmable parameters and refined firmware delivering even smoother low-speed control. The modern processor architecture enables faster response times and more sophisticated throttle curve customisation than earlier generation controllers.
- Is this ESC waterproof out of the box? — The Firma 80A features waterproof construction, but achieving full waterproof capability requires following the detailed sealing instructions provided in the comprehensive manual. Proper assembly and optional potting or sealing of connector areas ensures maximum protection against water ingress in wet crawling conditions. Always review the full waterproofing instructions before subjecting your ESC to serious water exposure.
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 Firma 80A Sensored/Sensorless Smart Outrunner Motor / ESC 2- M-SPMXSEMC23 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.
Finance Options
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Novuna Personal Finance Available on this product
| DEPOSIT |
MONTHS |
APR |
MONTHLY PAYMENTS |
TOTAL AMOUNT PAYABLE |
| 24 Month Credit |
| £30.30 |
24 |
19.9% |
24 x £13.65 |
£357.90 |
| 36 Months Credit |
| £30.30 |
36 |
19.9% |
36 x £9.90 |
£386.70 |
| 48 Months Credit |
| £30.30 |
48 |
19.9% |
48 x £8.05 |
£416.70 |
| Buy Now Pay Later 48 months (6 months Deferred) |
| £30.30 |
48 |
24.9% |
48 x £9.50 |
£486.30 |
| Buy Now Pay Later 48 months (10 months Deferred) |
| £30.30 |
48 |
24.9% |
48 x £10.04 |
£512.22 |
| Buy Now Pay Later 48 months (12 months Deferred) |
| £30.30 |
48 |
24.9% |
48 x £10.61 |
£539.58 |
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