- Brand: Spektrum
- Model Number: P-SPMSA334
- Product Type: Sub-Micro Digital Servo
- Weight: 9 grams
- Servo Size Classification: Sub-Micro
- Servo Type: Digital
- Gear Type: Plastic
- Operating Voltage Range: 4.8 to 6.0 volts
- Water Resistant: No
- Shaft Diameter: 4.6 millimetres
Overview
The Spektrum 9g Sub-Micro Plastic Digital Servo (P-SPMSA334) is a compact, lightweight servo designed for small-scale RC applications where space and weight are at a premium. This digital servo delivers reliable performance in a sub-micro package, making it ideal for RC enthusiasts in the UK who are building or upgrading compact RC models. Whether you're working on a micro RC plane, a small quadcopter, or any RC project where precision control matters, this servo provides the digital technology and compact form factor needed to optimise your build.
Spektrum is recognised globally as a trusted manufacturer of RC electronics and control systems, and this servo represents their commitment to quality in the sub-micro category. The plastic gear construction keeps weight minimal whilst maintaining durability for typical RC applications. For hobbyists seeking affordable, dependable servo solutions for compact RC builds, this 9g digital servo offers excellent value and performance characteristics that have made it a popular choice across the RC community.
The sub-micro servo category has become increasingly popular amongst RC enthusiasts in the UK who want to build lightweight, agile models without sacrificing control precision. This servo's digital technology ensures consistent, responsive control inputs, making it suitable for a wide range of RC projects from ultra-light aircraft to small ground-based vehicles. Its compact dimensions mean it can fit into tight spaces where standard servos simply won't work, expanding the possibilities for innovative RC builds.
Key Features
- Digital Servo Technology — This servo uses digital control circuitry rather than analogue systems, providing faster response times, improved holding force, and better overall control linearity. Digital servos can handle rapid command changes more accurately, which is particularly valuable when flying or driving demanding RC models where precision matters.
- 9 Gram Weight — At just 9 grams, this servo is exceptionally lightweight, making it perfect for weight-sensitive applications where every gram counts. Light servos reduce the overall weight of your RC model, allowing for better flight characteristics in aircraft or improved acceleration and manoeuvrability in ground-based vehicles.
- Sub-Micro Form Factor — The sub-micro size classification means this servo is significantly smaller than standard servos, enabling installation in compact spaces and tight airframes or chassis areas. This makes it ideal for micro-scale RC projects and tight builds where space is the limiting factor.
- Plastic Gear Construction — The plastic gear set keeps the servo lightweight and affordable whilst still providing adequate strength for typical RC applications. Plastic gears are suitable for normal flying and driving conditions, and the weight savings they provide often outweigh the durability advantages of metal gears in sub-micro applications.
- Operating Voltage Range 4.8-6.0V — This servo operates comfortably across the standard RC battery voltage range, meaning it works with both 4-cell NiMH packs (4.8V nominal) and standard 2S LiPo batteries (7.4V nominal when fresh, dropping to this range during use). This voltage flexibility makes it compatible with most RC battery systems commonly used in the UK.
Technical Performance
The Spektrum P-SPMSA334 is engineered as a digital servo, utilising modern control circuitry that offers superior performance compared to analogue alternatives. The servo operates reliably within a 4.8 to 6.0 volt range, making it compatible with standard RC battery configurations used throughout the hobby. At 9 grams, this servo represents an excellent weight-to-performance ratio, crucial for applications where minimising mass directly impacts model performance. The plastic gear set construction provides adequate strength for typical RC duties whilst maintaining the lightweight profile essential for sub-micro applications. The digital control system ensures precise, repeatable movements with improved holding torque compared to analogue servos of similar size, making it suitable for applications ranging from micro RC aircraft to compact ground vehicles. The sub-micro classification places it amongst the smallest purpose-built RC servos available, designed specifically for builds where space constraints are severe. For RC enthusiasts in the UK building ultra-light models or retrofitting compact airframes and chassis, this servo's engineering delivers the reliability and performance characteristics expected from the Spektrum brand, backed by decades of experience in RC electronics and control systems.
What's in the Box
- SPM Servo: 9g Sub-Micro Plastic Digital Servo (P-SPMSA334)
Frequently Asked Questions
- What voltage does the Spektrum P-SPMSA334 servo need? — This servo operates within a 4.8 to 6.0 volt range, making it compatible with standard 4-cell NiMH battery packs (4.8V nominal) and 2S LiPo batteries (which deliver approximately 7.4V fresh but settle into this range during discharge). Most RC enthusiasts in the UK use one of these two battery types, so compatibility is not an issue for typical RC applications.
- Is this servo suitable for beginners? — Yes, this servo is suitable for RC hobbyists of all experience levels. Its straightforward installation and operation make it accessible to beginners, whilst its digital technology and reliable performance appeal to experienced builders. If you're new to RC and building a compact model, this servo offers dependable control without unnecessary complexity.
- What size models is this servo designed for? — The sub-micro classification and 9-gram weight make this servo ideal for small-scale RC models where weight and space are critical factors. It's commonly used in micro RC aircraft, compact quadcopters, small ground vehicles, and any RC project where standard-sized servos are too large or too heavy for the application.
- What is the difference between digital and analogue servos? — Digital servos like this P-SPMSA334 use microprocessor-based control circuits that sample and adjust servo position many times per second, delivering faster response times, better holding force, and improved linearity. Analogue servos use simpler electronics and are typically heavier and slower to respond. For RC applications requiring precision control, digital servos are the modern standard.
- Is this servo waterproof? — Based on the specifications from Spektrum, this servo does not feature water-resistant construction. It should be protected from water exposure and used in dry conditions. If you need a waterproof servo for water-based RC models, you would need to select a different servo specifically designed with water-resistant seals and materials.
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 Servo: 9g Sub-Micro Plastic Digital P-SPMSA334 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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