Overview
The SPM H3065 is a sub-micro digital servo specifically designed for 250-450 size helicopter tail control applications. This high-performance servo from Spektrum delivers the speed and precision required for accurate tail rotor management on micro helicopters and small bind-and-fly RC models. Whether you are upgrading an existing Blade helicopter or building a new 250-450 size kit model, the H3065 offers exceptional performance in a compact form factor that fits perfectly into tight spaces found in micro RC helicopters across the UK and beyond.
As a recognised authority in RC servos, Spektrum has engineered the H3065 with cutting-edge digital technology and metal gears to ensure reliability and responsiveness. This servo is ideal for RC enthusiasts who demand precision control and rapid response times in their heli tail rotor systems. The blazing-fast transit speed combined with industry-leading position accuracy makes it an excellent choice for both experienced pilots upgrading their equipment and newcomers to the micro helicopter hobby looking for quality components.
The H3065 represents excellent value for money, offering professional-grade performance at an accessible price point. Its proven track record with popular Blade Bind and Fly models and compatibility with numerous 250-450 size helicopter kits make it one of the most versatile tail servo options available for small-scale RC helicopter enthusiasts in the UK today.
Key Features
- Ultra-Fast .029 Second Transit Speed — The H3065 boasts an incredibly quick .029 second transit time, meaning the servo responds almost instantaneously to control inputs, providing the precise tail rotor adjustments necessary for stable helicopter flight and responsive handling during aggressive manoeuvres.
- Metal Gear Construction — Unlike plastic gears that can strip and wear under load, the H3065 features metal gears throughout, delivering exceptional durability and longevity even with frequent use and demanding flight sessions in competitive or recreational settings.
- Industry-Leading Position Accuracy — The servo maintains exceptional position accuracy, ensuring that your tail rotor responds precisely to your stick inputs without drift or delay, which is critical for maintaining stable hovering and smooth flight control.
- Excellent Holding Power — With robust holding torque, the H3065 resists unwanted movement and maintains the tail rotor in the exact position you command, even in challenging flight conditions or when dealing with wind resistance.
- Sub-Micro Size Form Factor — Measuring just 0.91 inches in length and 0.47 inches in width, the H3065 fits perfectly into the compact spaces of micro and mini helicopters without adding unnecessary weight or bulk to your aircraft.
- Digital Servo Technology — The digital processing provides superior consistency and responsiveness compared to analogue servos, allowing for more refined control authority and better overall flight characteristics on your RC helicopter.
- Wide Operating Voltage Range — The servo operates reliably between 4.8V and 6.0V, giving you flexibility with different battery configurations and ensuring compatibility with standard RC helicopter battery packs.
- 333Hz Update Frequency — Operating at 333Hz, the servo updates its position hundreds of times per second, providing smooth and fluid control response that minimises lag and jitter in your helicopter's tail rotor control.
Technical Performance
The H3065 is engineered with precision engineering and quality materials to deliver reliable performance in demanding RC helicopter applications. At just 12.9 grams, this servo is exceptionally lightweight, making it ideal for weight-conscious builds where every gram matters for optimal flight performance. The digital servo architecture operates at a 333Hz update frequency, which translates to incredibly responsive control feedback and smooth servo movements that are essential for maintaining stable helicopter flight. The servo produces 15.75 oz-in of maximum torque at 6.0V, providing sufficient power to control the tail rotor efficiently whilst remaining within the weight and power envelope of micro and mini helicopter designs. The metal gear construction ensures that this torque is delivered consistently throughout the servo's lifespan, resisting wear and maintaining performance even after thousands of flight cycles. The single bearing or bushing configuration provides smooth rotation without excessive friction, whilst the 2-degree deadband helps eliminate servo jitter and hunting around the neutral position. The 22 AWG wire gauge provides adequate current-carrying capacity for the servo's moderate power requirements, and the 7.87-inch wire length offers sufficient reach to connect the servo to your receiver without requiring extension cables in most installations. The sub-micro size category places it perfectly between even smaller nano servos and standard micro servos, giving builders flexibility in helicopter frame compatibility and system integration.
What's in the Box
- SPM H3065 Digital Tail Servo
- Pre-installed servo horn
- Installation hardware and mounting brackets
Frequently Asked Questions
- Is the H3065 suitable for upgrading my Blade Bind and Fly helicopter? — Yes, absolutely. The H3065 is specifically designed as an ideal upgrade for Blade Bind and Fly models in the 250-450 size range. Its sub-micro form factor and performance characteristics make it a perfect direct replacement for the tail servo on these popular helicopters, providing noticeably faster response and more precise control.
- What is the .029 second transit speed and why does it matter? — Transit speed measures how quickly the servo moves from one end of its range to the other. The .029 second figure is exceptionally fast, meaning the servo responds almost instantaneously to your control inputs. This matters because fast servo response is critical for maintaining stable tail rotor control and enabling smooth, responsive helicopter flight, especially during agile flying manoeuvres.
- What voltage battery does the H3065 require? — The H3065 operates on any battery voltage between 4.8V and 6.0V, which covers standard 2-cell LiPo batteries (nominally 7.4V but dropping to around 6V during discharge) as well as standard NiMH battery packs at 4.8V. Most modern RC helicopters in this size range use 2S LiPo batteries, which are fully compatible with this servo.
- Why does the metal gear construction matter? — Metal gears are significantly more durable and reliable than plastic gears, particularly in demanding applications like helicopter tail rotor control where precision and consistency are essential. Metal gears resist stripping and wear, ensuring the servo maintains performance and accuracy throughout its lifespan, even with heavy use in competitive or regular recreational flying.
- What is the difference between the H3065 and other tail servos? — The H3065 stands out with its combination of ultra-fast .029 second transit speed, metal gear construction, and industry-leading position accuracy at a sub-micro size. These features together make it one of the highest-performance options in its class, with particular emphasis on speed and responsiveness for modern helicopter flying where precise tail control is paramount.
- How much torque does the H3065 produce? — The servo produces 15.75 oz-in of maximum torque at 6.0V, which is sufficient to reliably control the tail rotor on 250-450 size helicopters. This torque level is optimised for the specific weight and inertia characteristics of tail rotors in this size range, providing adequate control authority without excess weight.
- Will the H3065 work with my 250 size helicopter kit? — The H3065 is specifically designed for 250-450 size helicopters and is described as a perfect pair for many kit models in this range. Its sub-micro form factor ensures it fits properly in the tight spaces found in 250 size designs, making it an excellent choice for kit builds in this category.
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 H3065 Mid-Torque Ultra-Speed Micro Heli Tail Servo P-SPMSH3065 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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