ET1260

Overview

The Etronix Photon 3665 Size 2900KV Brushless Motor is a versatile and high-performing motor designed for RC car enthusiasts across the UK who want to upgrade from a standard brushed setup. This 3665-size brushless motor represents an excellent choice for hobbyists seeking reliable performance, easy installation, and sensible power delivery across a wide range of RC car applications and skill levels. Whether you're exploring brushless power for the first time or seeking a dependable upgrade for your existing RC car UK collection, the Photon 3665 delivers the performance credentials you need without unnecessary complexity.

Manufactured by Etronix, a recognised brand in the RC hobby, this brushless motor combines straightforward installation with carefully calibrated performance specifications. The 2900KV rating strikes an ideal balance between acceleration and top-end speed, making it suitable for competitive driving, weekend bashing, and general recreational use. If you've been running brushed motors in your RC car and are ready to experience the efficiency, reliability and power delivery improvements that brushless technology offers, the Photon 3665 is an excellent entry point into the world of brushless RC cars.

The motor's engineering emphasises practical performance over raw power figures. With its 4-pole rotor design and robust construction, this ready to run brushless motor upgrade delivers the kind of balanced performance that appeals to both newcomers discovering brushless RC motors for the first time and experienced hobbyists looking for a cost-effective power upgrade. At just £33.99, it represents genuine value for money in the brushless RC motor market.

Key Features

• 2900KV Rating — The KV (kilovolt) rating of 2900 determines how fast the motor spins relative to voltage applied, making this a mid-range speed motor that delivers excellent balance between acceleration and top speed for most RC car applications, particularly 1/10 scale buggies, touring cars and on-road vehicles.
• 3665 Motor Size — The 3665 designation indicates the motor's physical dimensions (36mm diameter × 65mm length), which is a standard size that fits into many popular RC car chassis designs, ensuring broad compatibility across numerous models and platforms in the RC car UK market.
• 50,000 Maximum RPM — This substantial maximum RPM figure demonstrates the motor's capability to deliver rapid acceleration and competitive top-end speed when paired with appropriate battery voltage and gearing, giving drivers the performance they need on the track or trail.
• 4-Pole Rotor Design — The 4-pole rotor configuration provides smooth power delivery, efficient torque generation across the RPM range, and reliable performance characteristics that make this motor dependable in competitive and recreational driving scenarios alike.
• 14.8V Maximum Operating Voltage — Compatibility with 4-cell LiPo batteries (4S LiPo) up to 14.8V means you can use widely available and affordable battery solutions, making this motor practical for budget-conscious RC enthusiasts and those building performance RC car setups.
• 95A Maximum Current Rating — The 95-amp continuous current rating indicates this motor can handle high-demand driving conditions and works with modern brushless ESCs (electronic speed controllers) rated for 100A or above, ensuring you have plenty of electronic compatibility options.
• Compact Physical Dimensions — At 35.5mm diameter and 64.5mm length, with a 17mm shaft length and 5mm shaft diameter, this motor offers a space-efficient design that integrates cleanly into most 3665-compatible RC car chassis without requiring extensive modification or custom mounting solutions.
• Lightweight Construction — Weighing just 250 grams, the Photon 3665 keeps your RC car's weight low, improving handling characteristics, acceleration, and overall performance on both road and off-road surfaces, which is critical for competitive driving and challenging terrain.
• 4mm Connector Plug — The standard 4mm plug size ensures compatibility with the vast majority of brushless ESCs and battery packs on the market, eliminating the need for adapters or modification and making installation straightforward for RC car UK users.
• Simple Installation — Designed for ease of setup, this brushless motor requires no special tools or expertise to install, making it ideal for hobbyists upgrading from brushed setups who may be new to brushless motor installation and maintenance procedures.

Technical Performance

The Etronix Photon 3665 brushless motor exemplifies practical engineering focused on delivering reliable, repeatable performance in real-world RC car driving conditions. The motor's 2900KV rating, when paired with a 4-cell LiPo battery (4S) at 14.8V, produces a maximum of 50,000 RPM, translating to rapid acceleration and competitive straight-line speed for 1/10 scale touring cars, on-road buggies, and similarly-sized platforms. The 4-pole rotor design provides smooth commutation, reducing vibration and delivering consistent torque delivery across the entire RPM range, which translates to predictable handling and performance on track. Built to handle a continuous current draw of up to 95 amps, the Photon 3665 operates reliably within the specifications of modern brushless ESCs rated 100A or above, eliminating compatibility concerns and allowing you to focus on enjoying your RC car rather than worrying about electronic limitations. The motor's compact dimensions (35.5mm diameter, 64.5mm length) fit within standard 3665-size motor mounts found across countless popular RC car platforms, ensuring hassle-free installation without chassis modification. The lightweight aluminium construction at 250 grams keeps your RC car's overall weight down, preserving important mass distribution and improving acceleration and handling characteristics. Whether you're upgrading from a stock brushed motor or building a new RC car setup, the Photon 3665 delivers the engineering quality, performance specifications, and reliability that serious RC hobbyists expect from a branded brushless motor.

What's in the Box

• Etronix Photon 3665 Size 2900KV Brushless Motor

What You Need to Complete

• Brushless ESC (Electronic Speed Controller) rated 100A or above with 4mm connector compatibility
• 4-cell LiPo battery pack (4S LiPo) up to 14.8V with 4mm connectors
• RC car chassis compatible with 3665-size motors (35.5mm diameter, 64.5mm length)
• Motor mounting plate and hardware suitable for your chassis
• LiPo battery charger
• Radio control system and receiver

Frequently Asked Questions

• Is the Etronix Photon 3665 2900KV motor suitable for beginners upgrading to brushless? — Yes, absolutely. The Photon 3665 is specifically designed as an ideal brushless motor upgrade from a stock brushed setup, with straightforward installation and sensible KV rating that delivers predictable, manageable power delivery. The 2900KV rating is neither too aggressive nor too mild, making it forgiving for drivers new to brushless technology whilst still offering genuine performance improvements over brushed motors. Its compatibility with standard 4S LiPo batteries means you can use affordable, widely-available battery solutions without needing specialist high-end equipment.
• What battery does the Etronix Photon 3665 need? — This motor is designed for 4-cell LiPo batteries (4S LiPo) with a maximum voltage of 14.8V. You'll need a battery pack with 4mm connectors to match the motor's 4mm plug size. The 95A maximum current rating means you should pair this motor with a battery pack rated for at least 95 amps continuous discharge, typically a 95C or higher discharge rating, to ensure optimal performance and battery longevity. A typical 4S LiPo pack in the 5000-7000mAh capacity range would be ideal for most RC car applications.
• What ESC (Electronic Speed Controller) do I need for this motor? — You'll need a brushless ESC rated for 100A or above (the motor draws up to 95A continuously, so you need headroom). The ESC must have 4mm connectors to match the motor's 4mm plug size. Many reputable brands including Hobbywing, Castle Creations and others manufacture suitable ESCs in this current rating. The ESC should be compatible with 4S LiPo battery voltage (up to 14.8V) and support the type of vehicle you're driving (on-road, off-road, crawler, etc.).
• What vehicles and chassis will the 3665 motor fit? — The 3665-size motor fits into any RC car chassis designed to accept a 3665-size brushless motor. The key dimensions for checking compatibility are 35.5mm diameter and 64.5mm length. This typically includes 1/10 scale on-road touring cars, buggies, truggy bodies and many similar-sized platforms. Use these dimensions to verify fitment with your specific chassis before purchasing. If you're unsure whether your RC car is compatible, contact the RC Model Shop team for advice.
• How does the 2900KV rating compare to other motor KV options? — KV rating inversely affects motor speed and torque characteristics. A 2900KV motor is mid-range: it's slower than high-KV motors (like 4000KV or above) but faster than low-KV motors (like 2200KV). The 2900KV Photon 3665 strikes an excellent balance, delivering strong acceleration whilst maintaining manageable top-end speed, making it ideal for general RC car applications. Lower KV motors produce more torque but less speed; higher KV motors produce more speed but less torque. The 2900KV sits in the sweet spot for versatility.
• Can I use this motor for off-road RC cars or only on-road vehicles? — The Etronix Photon 3665 is suitable for most RC car applications, including both on-road and off-road vehicles, provided your chassis is designed to accept a 3665-size brushless motor. Its 2900KV rating and sensible power delivery work well for buggies, truggy-style vehicles and recreational off-road driving. For extreme conditions or competition-level rock crawling, you may want to consult with RC specialists, but for general off-road use, this motor performs reliably and predictably.
• What makes brushless motors better than brushed motors for RC cars? — Brushless motors offer several advantages over brushed motors: they're more efficient (less energy wasted as heat), they deliver more consistent power across a wider speed range, they require less maintenance (no brushes to wear out), they run cooler, they accelerate more responsively, and they typically last significantly longer. The Etronix Photon 3665 allows you to experience all these benefits, which is why it's recommended as an ideal upgrade from stock brushed setups.
• How does the 4-pole rotor design affect performance? — The 4-pole rotor configuration (four alternating magnetic poles) ensures smooth power delivery and efficient torque generation throughout the motor's RPM range. This translates to predictable acceleration, reduced vibration, and reliable performance in competitive and recreational driving scenarios. The 4-pole design is a proven standard in RC brushless motors, balancing efficiency, smoothness and durability.
• Is the Photon 3665 waterproof or weather-resistant? — The specification information does not explicitly state waterproofing or weather-resistance ratings. For precise information about environmental protection ratings and suitability for wet conditions, contact the RC Model Shop team directly, who can advise on water resistance and maintenance requirements for your specific usage scenario.
• How long will this motor last with proper maintenance? — Brushless motors typically deliver thousands of hours of reliable operation when properly maintained. The sealed bearing design of the Photon 3665 reduces wear on internal components. Avoid prolonged operation at maximum RPM and throttle, ensure adequate battery voltage to prevent overheating, allow the motor to cool between intensive driving sessions, and keep the motor clean of dirt and debris. With standard care, brushless motors like the Photon 3665 should provide years of dependable service.

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 3665 SIZE 2900kv BRUSHLESS MOTOR ET1260 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.