SAVOX WATERPROOF JUMBO HV DIGI SERVO 35KG/0.15s@7.4V - PLUS SAV-SW0240MG+

Overview

The Savox SW0240MG+ is a professional-grade waterproof high-torque, high-speed 5th scale metal gear digital servo designed specifically for demanding RC applications. This servo combines cutting-edge technology with exceptional durability, making it an ideal choice for serious RC enthusiasts running large-scale vehicles. Whether you're piloting a 1/5 scale off-road truck, a large-scale buggy, or a precision-engineered RC boat or aircraft, this servo delivers the performance and reliability you need to stay competitive. As a trusted RC hobby retailer with expertise across all major brands, we recognise that servo selection is critical to your vehicle's performance, and the Savox SW0240MG+ represents the pinnacle of large-scale servo engineering available in the UK market today.

What sets this servo apart is its exceptional combination of speed, power, and waterproof protection. With a blazing-fast 0.15 second transit time at 7.4V and an impressive 35 kg-cm of torque at the same voltage, the SW0240MG+ delivers the responsiveness and raw power that 5th scale pilots demand. The waterproof case design ensures reliable operation in wet conditions, whether you're crossing river sections in your off-road truck, running high-speed water-cooled applications, or simply protecting your servo investment from unexpected weather. This is not a beginner's servo—it's engineered for experienced RC pilots who demand uncompromising performance from their equipment.

The servo features advanced 12-bit (4096) resolution technology that provides incredibly fine control inputs, enabling precise steering adjustments and smooth servo transitions across the full operating range. Combined with a brushed motor, metal gear train, and two ball bearings for smooth operation, the SW0240MG+ is built to handle the extreme demands of large-scale RC racing and bashing. The new Plus model includes exciting enhancements including Soft Start Mode and Sanwa SSR compatibility, making it even more versatile for modern RC setups. If you're searching for a high-performance RC servo UK retailers stock for serious hobbyists, or you need a reliable servo upgrade for your existing 1/5 scale platform, the Savox SW0240MG+ is an investment in quality engineering and proven performance.

Key Features

• Waterproof Case Design — The completely sealed waterproof housing protects internal components from moisture, dust, and contaminants, which is essential when operating in wet environments or during intense off-road sessions where water crossings are common. This feature significantly extends servo lifespan and maintains consistent performance in challenging conditions.
• High Voltage Capable (7.4V Operation) — This servo operates safely at high voltage, delivering 35 kg-cm of torque and 0.15 second speed at 7.4V, compared to 28 kg-cm and 0.18 second at 6V. Higher voltage operation means faster response times and greater power output without stressing the servo, giving you a substantial performance advantage in competitive situations.
• Advanced 12-Bit Digital Resolution (4096 steps) — The leading-edge 12-bit resolution provides unprecedented control precision, allowing your radio system to communicate 4,096 individual position steps to the servo instead of standard lower-bit alternatives. This translates to smoother steering inputs, more predictable handling characteristics, and reduced dead-band issues during high-speed manoeuvres.
• Strong Metal Gear Train — The durable metal gear construction replaces inferior plastic gears found in lower-grade servos, significantly improving longevity and reliability under high-load conditions. Metal gears withstand the shock loads and sustained pressure of aggressive driving, ensuring your servo survives season after season of intense use.
• Two Ball Bearings — The dual ball bearing design ensures smooth, frictionless operation throughout the servo's full range of motion, reducing wear on internal components and enabling faster response times. Ball bearings are vastly superior to plain bushings, maintaining consistent performance even after thousands of operating hours.
• Brushed Motor Design — The brushed motor provides linear torque delivery and excellent reliability, with well-understood performance characteristics trusted by professionals worldwide. Brushed motors excel in high-torque, variable-load applications typical of large-scale RC vehicles.
• Soft Start Mode (Plus Model Feature) — The new SW0240MG+ includes Soft Start Mode, which gradually applies power during initialisation, reducing electrical stress on your vehicle's power system and extending overall system lifespan while providing smoother operation during start-up sequences.
• Sanwa SSR Compatibility (Plus Model Feature) — The Plus variant offers full compatibility with Sanwa SSR radio systems, ensuring seamless integration with modern radio equipment and expanding your setup flexibility without requiring additional adapters or workarounds.
• 240 Hz Refresh Rate — The servo updates its position 240 times per second, providing exceptional responsiveness to radio input changes and enabling smooth correction of steering and suspension movements at all speeds.
• Wide Operating Travel Range — With a standard operating travel of 100 degrees (1000-2000 microsecond pulse width) and maximum travel approaching 130 degrees (800-2200 microsecond), this servo accommodates various mechanical setups and linkage configurations common in 1/5 scale vehicles.

Technical Performance

The Savox SW0240MG+ represents the pinnacle of large-scale servo engineering, combining materials science, digital electronics, and mechanical precision into a single cohesive package. The servo weighs 200 grams and measures 65.8 x 30.0 x 59.1 millimetres, making it appropriately sized for jumbo-scale applications without excessive weight penalties. The brushed motor coupled with the metal gear train delivers 35 kilograms of torque at 7.4V—equivalent to 486.1 ounce-inches—with 0.15 second transit time across a 60-degree arc, making it one of the fastest servos in its torque class. At lower voltages (6V operation), the servo still delivers a respectable 28 kilograms of torque with 0.18 second speed, providing operational flexibility and extended runtime if high-voltage batteries are unavailable. The servo draws 180 milliamps under no-load conditions at 7.4V and reaches 9000 milliamps at full stall load, requiring careful power system design to avoid voltage sag during demanding manoeuvres. The 15-tooth output gear spline is a standard interface compatible with virtually all modern servo horns and linkage systems. Operating temperature range spans from -10 to +50 degrees Celsius, ensuring reliable performance across UK seasonal variations and international competition venues. The aluminium case construction provides excellent heat dissipation while the waterproof sealing keeps moisture at bay, and the servo accepts pulse widths from 800 to 2200 microseconds with a neutral position at 1500 microseconds, providing exceptional compatibility with virtually all modern RC radio systems and control interfaces. This servo represents an investment in proven engineering backed by a comprehensive 1-year warranty, making it an excellent choice for serious RC enthusiasts in the UK who demand performance without compromise.

What's in the Box

• Savox SW0240MG+ Waterproof Metal Gear Digital Servo
• Standard Servo Lead with Connector
• 200mm Wire Length Connection Cable

Frequently Asked Questions

• Is the Savox SW0240MG+ suitable for 1/5 scale off-road trucks and buggies? — Yes, this servo is specifically engineered for 1/5 scale applications including large-scale buggies, trucks, and off-road vehicles. With 35 kg-cm of torque at 7.4V and exceptional speed, it delivers the performance demanded by competitive 1/5 scale pilots and serious weekend bashers.
• What voltage should I run this servo at for optimal performance? — The servo operates at both 6V and 7.4V, though running at 7.4V provides significantly better performance with 35 kg-cm torque and 0.15 second speed versus 28 kg-cm and 0.18 second at 6V. For best results with modern high-voltage receiver batteries, use 7.4V operation.
• Is this servo truly waterproof? — The SW0240MG+ features a completely sealed waterproof case design that protects against moisture ingress from water crossings, rain, and general wet environments. This makes it ideal for RC boats, amphibious vehicles, and off-road trucks that regularly encounter wet conditions.
• What is the difference between the SW0240MG+ and the standard SW0240MG? — The new Plus model (SW0240MG+) adds Soft Start Mode for smoother initialisation and Sanwa SSR compatibility for seamless integration with modern radio systems. Both models share identical mechanical specifications and performance characteristics.
• Can I use this servo with my existing radio system? — The SW0240MG+ operates with any standard RC radio system supporting 1000-2200 microsecond pulse widths, which covers virtually all modern radio equipment including Sanwa, Futaba, Spektrum, and other leading brands. The new Plus model specifically supports Sanwa SSR systems.
• How does the 12-bit digital resolution improve performance? — The 12-bit resolution provides 4096 individual position steps, enabling far finer control than older 8-bit servos which offer only 256 steps. This results in smoother steering input, reduced dead-band issues, and more predictable vehicle handling characteristics during competitive driving.
• What warranty coverage does the Savox SW0240MG+ include? — Savox backs this servo with a comprehensive 1-year warranty covering manufacturing defects and material failures, providing peace of mind with your investment in quality servo equipment.
• What is the operating current draw and will my battery system support it? — The servo draws 180 milliamps under no-load conditions at 7.4V and reaches 9000 milliamps at full stall load. You'll need a battery system with adequate capacity and low internal resistance to handle peak current demands without excessive voltage sag during aggressive steering inputs.
• Can this servo handle both steering and throttle applications in my large-scale vehicle? — Yes, the SW0240MG+ is suitable for both steering and throttle control applications, though its high torque makes it ideal for steering duties in large-scale vehicles where powerful steering response is essential for maintaining directional control.
• What makes this servo better than cheaper alternatives? — The combination of metal gears, waterproof protection, dual ball bearings, high-voltage capability, and advanced 12-bit resolution provides exceptional durability and performance compared to budget alternatives. Professional-grade engineering and proven reliability justify the investment for serious RC hobbyists.

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 SAVOX WATERPROOF JUMBO HV DIGI SERVO 35KG/0.15s@7.4V - PLUS SAV-SW0240MG+ 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.