ETRONIX PHOTON 2.1W COMBO W/11.0R 3450KV MOTOR/45A ESC ET0411

Overview

The Etronix Photon 2.1W Combo represents an excellent entry point into brushless RC technology, offering serious performance gains over traditional brushed systems at an accessible price point. This weatherproof sensorless system pairs a potent 45A ESC with an 11.0R 3450KV brushless motor, making it the ideal choice for upgrading your existing brushed RC car or building a new brushless-powered machine. Whether you're looking to transform a stock FTX Vantage, HPI RS4, or other compatible 1/10 scale platform, this combo delivers the speed, efficiency and reliability that modern RC enthusiasts demand.

The Photon 2.1W is specifically engineered for 1/10 scale buggies, truggies, short course trucks and standard trucks, offering broad compatibility across popular platforms used throughout the UK RC community. The convenience and performance of brushless technology has traditionally been reserved for experienced builders and competitive racers, but Etronix has democratised this technology with the Photon range, making it accessible to anyone willing to upgrade their setup. Simple to set up and requiring minimal soldering experience, this combo represents outstanding value for serious hobbyists seeking to enhance their RC car's performance without the complexity of high-end systems.

One of the standout advantages of choosing this particular combo is the included Etronix Photon SBS LED Programming Card (ET0107). This programmable interface allows you to fine-tune ten different parameters within the ESC, enabling complete customisation of throttle response, braking characteristics, motor timing and more. This level of control, combined with weatherproof electronics, positions the Photon 2.1W as a genuine upgrade solution rather than a basic entry-level system. For RC car UK enthusiasts seeking ready-to-run brushless performance with genuine tuning depth, this is a category-defining proposition.

Key Features

• Weatherproof Sensorless System — The ESC and motor combination features full weatherproofing, protecting your electronics from moisture, dust and the inevitable splashes that come with outdoor RC bashing sessions. This durability extends the lifespan of your investment and reduces maintenance requirements compared to non-sealed alternatives.
• 45A Constant Current with 260A Burst Rating — The ESC delivers impressive power delivery with a 45A continuous current rating and 260A burst capability, providing ample headroom for aggressive acceleration and sustained high-speed running without thermal throttling or performance degradation.
• 11.0R 3450KV 4-Pole Sensorless Brushless Motor — The included 4-pole brushless motor operates at 3450KV, delivering smooth, responsive power delivery with the efficiency advantages that brushless technology offers over traditional brushed motors. The 11-turn configuration makes this motor ideally suited to 2S LiPo battery setups and NiMH packs in the 5-10 cell range.
• Ten Adjustable ESC Parameters via Programming Card — The supplied ET0107 Photon SBS LED Programming Card unlocks unprecedented tuning flexibility, allowing you to adjust cutoff voltage, running mode, motor timing, initial acceleration, throttle percent reverse, throttle limit, braking percentage, drag brake, motor rotation direction and neutral range deadband settings without specialist equipment or computer software.
• Automatic Cell Detection Cutoff Voltage — The ESC automatically detects your battery cell count and adjusts low voltage cutoff accordingly, protecting LiPo batteries from dangerous over-discharge whilst maximising usable runtime from NiMH and NiCd packs.
• Multiple Running Modes — Choose between forward only, forward with reverse, or forward with pause before reverse modes to match your driving style and the characteristics of your specific RC car platform, whether that's a low-grip buggy or a high-traction truck.
• Motor Timing Adjustment — Five timing settings from very low through to very high enable you to optimise efficiency, responsiveness and top speed based on your motor timing preferences and track conditions, with each setting available via the programming card.
• Proportional Initial Acceleration Control — Fine-tune your launch characteristics across four levels from low to very high, preventing wheel-spin on loose surfaces whilst allowing aggressive acceleration when grip permits, without requiring hardware changes.
• Adjustable Reverse Throttle Scaling — Scale reverse throttle from 20% to 100%, giving you precise control over reverse speed independent of forward throttle settings, critical for controlling your RC car through tight technical sections.
• Throttle Limit Function — Progressively limit maximum throttle output from 0% to 90%, useful for breaking in new components, matching power delivery to track conditions, or providing a training mode for less experienced drivers.
• Proportional Braking Control — Adjust braking force from 10% to 100%, allowing you to dial in the stopping power that suits your driving style and chassis setup, from gentle progression to aggressive competition-grade deceleration.
• Drag Brake Function — Deploy drag brake settings from 0% to 30% to slow your RC car during throttle-off situations, improving handling characteristics through high-speed corners and technical sections without relying solely on friction braking.
• Dual Battery Chemistry Support — Run 2-3S LiPo batteries or 5-10S NiMH/NiCd packs with automatic chemistry detection, providing flexibility if you have existing battery packs from brushed systems or prefer the affordability of NiMH technology.
• 6V/2A BEC Output — The onboard Battery Elimination Circuit delivers regulated 6V power at up to 2A, sufficient to power servo systems and receiver electronics without requiring a separate battery, simplifying your build and reducing weight.
• Motor Rotation Reversal — Switch motor rotation direction electronically via the programming card, eliminating the need to physically swap motor connections if you need to reverse rotation for a different chassis configuration.
• Deadband Adjustment — Dial in neutral range deadband settings from 2% to 10%, controlling how much throttle stick centring movement occurs before the ESC recognises stick input, critical for smooth tracking and drift control.

Technical Performance

The Etronix Photon 2.1W Combo delivers genuine brushless performance in a compact, accessible package. The 45A ESC handles the electrical demands of modern 1/10 scale racing with aplomb, boasting a 260A burst rating that provides headroom for aggressive acceleration spikes without thermal protection cutting in during normal operation. The 11-turn motor operating at 3450KV is specifically calibrated for 2-3S LiPo battery compatibility, delivering linear power delivery and efficiency that makes brushed motors look antiquated by comparison. This KV rating also positions the system perfectly for 5-10 cell NiMH and NiCd battery packs, maintaining compatibility with older battery infrastructure if required during your transition from brushed to brushless technology.

The sensorless design eliminates the complexity of sensor wiring and reduces component count, improving reliability whilst maintaining the smooth commutation that modern RC drivers expect. Weatherproofing throughout the system extends durability significantly, with potted circuitry and sealed connectors resisting moisture ingress far better than unprotected electronics. Build quality reflects Etronix's engineering heritage, with robust construction designed to withstand the vibration, impact and thermal cycling inherent to serious RC bashing. The included programming card represents substantial engineering effort, offering tuning depth usually reserved for significantly more expensive systems, making this combo exceptional value for UK RC car enthusiasts seeking genuine performance without premium pricing.

What's in the Box

• Photon 2.1 45A ESC (sensorless, weatherproof)
• 11.0R 3450KV 4-pole sensorless brushless motor
• ET0107 Etronix Photon SBS LED Programming Card

What You Need to Complete

• RC chassis compatible with 1/10 scale motors and standard ESC mounting (1/10 buggy, truggy, short course truck or truck)
• 2-3S LiPo battery pack or 5-10S NiMH/NiCd battery pack (see battery compatibility section)
• Soldering equipment and skills to connect ESC to battery and motor (connectors not pre-fitted)
• Battery charging equipment appropriate to your chosen battery chemistry
• Radio system and receiver compatible with your RC chassis
• Servo(s) if upgrading from brushed (ESC BEC output powers servo systems)

Battery Compatibility and Motor Limits

Critical to understanding this system's capabilities is recognising the ESC motor limits imposed by battery voltage. With a 2S LiPo battery, the system supports motors rated up to 4350KV — the included 3450KV motor operates comfortably within this envelope. Moving to 3S LiPo increases system voltage but the motor limit drops to 2950KV, meaning you cannot run the included 3450KV motor safely on 3S LiPo packs as the motor would exceed its design voltage. The system is not compatible with 4S batteries under any circumstances. This design philosophy ensures that buyers choose the appropriate motor for their intended battery chemistry, preventing common mistakes that damage motors and ESCs. If you intend to run 3S LiPo, you would need a lower KV motor such as the Etronix equivalent rated at approximately 2950KV or lower.

Frequently Asked Questions

• Is the Etronix Photon 2.1W suitable for brushless beginners? — Absolutely. Whilst brushless technology seems intimidating, this combo removes that barrier through straightforward setup and the included programming card that handles all tuning electronically rather than requiring hardware modifications. The weatherproof design also forgives the occasional mistake that might destroy unprotected electronics. If you are upgrading from a brushed car, the transition is remarkably smooth and the performance improvement immediately apparent.
• What battery does the Photon 2.1W work with? — The system accepts 2-3S LiPo batteries with automatic cell detection, or 5-10S NiMH/NiCd packs. Critically, you must respect the motor limits: 2S LiPo supports up to 4350KV motors (the included 3450KV motor is perfect), whilst 3S LiPo is limited to 2950KV motors maximum. The included motor is not suitable for 3S operation. If you have existing NiMH packs from a brushed car, those typically work fine, though you will not see the performance improvement that LiPo delivers.
• Does this combo need soldering? — Yes, the ESC does not come with battery connectors fitted, so you will need to solder the appropriate battery connector to the ESC. Motor connections also require soldering. If soldering concerns you, consider asking experienced RC friends for assistance or visiting a local RC shop like RC Model Shop where staff can help. The motor and ESC themselves feature industry-standard 3.5mm gold bullet connectors that are simple to work with.
• What makes this better than upgrading with separate ESC and motor? — Combo packages like this are matched by the manufacturer to work optimally together. You know the power delivery is correct, the thermal characteristics align, and the components communicate seamlessly. Buying the included programming card separately costs money, so bundling saves cash. Most importantly, you avoid the risk of choosing incompatible components that might not work together properly.
• Will this fit in my FTX Vantage or HPI RS4? — Yes, the Photon 2.1W fits standard 540-size motor mounts found in most 1/10 scale platforms. However, remember the battery compatibility rules: if your chassis was designed for brushless, check whether it expects 2S or 3S, then choose your battery accordingly. For brushed-to-brushless upgrades like converting a brushed FTX Vantage 2.0, you are limited to 2S LiPo operation due to the 3450KV motor limitation.
• How much faster will my car be? — Brushless motors are inherently more efficient than brushed alternatives, typically providing 20-30% more speed from the same battery whilst generating less heat. Actual speed improvement depends on your chassis, battery, gearing and driving conditions, but expect noticeable acceleration and top-speed improvement compared to stock brushed setups.
• Can I adjust the power delivery? — Extensively. The included programming card offers ten separate adjustable parameters including throttle limit (0-90%), initial acceleration (four levels), motor timing (five levels), reverse throttle percentage, braking intensity and drag brake. This tuning depth lets you optimise the setup for your driving style and track conditions without purchasing additional equipment.
• What is the difference between sensorless and sensored motors? — Sensorless design uses back-EMF detection to time commutation, eliminating sensor wires and reducing complexity whilst maintaining smooth power delivery. Sensored motors use hall effect sensors to time commutation more precisely, primarily benefiting low-speed crawling applications. For general 1/10 buggy, truck and short course use, sensorless performs excellently and is simpler to integrate.
• How does the weatherproofing help? — Sealed electronics resist moisture, dust and general environmental contamination far better than exposed circuitry. This extended durability means your investment survives splashes, rain, muddy conditions and high-humidity storage without corrosion or performance degradation. The weatherproof design also reduces maintenance requirements compared to unprotected alternatives.

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 ETRONIX PHOTON 2.1W COMBO W/11.0R 3450KV MOTOR/45A ESC ET0411 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.