Overview
The Radient RS-MS118-PG Micro 9g Analog Servo (RDNA0408) is a lightweight, compact servo solution designed for RC enthusiasts who demand precision control in tight spaces. Whether you're building a compact RC car UK, a small-scale crawler, or any specialist RC project where weight and size are critical considerations, this micro servo delivers reliable analogue control without unnecessary bulk. At just 9 grams, it represents an ideal choice for modellers seeking to minimise weight whilst maintaining responsive steering and control authority.
This servo is engineered for hobbyists and RC enthusiasts aged 14 and above who appreciate the balance between performance and practicality. The Radient brand has established itself as a trusted manufacturer of RC components, and this micro servo exemplifies their commitment to quality and value. If you're working on a ready to run RC model or a custom build where space is at a premium, the RDNA0408 offers straightforward analogue operation without the complexity of digital servos, making it an excellent choice for builders who prefer simplicity and reliability.
RC Model Shop stocks this servo because we understand that not every RC project requires full-size components. Micro servos like the Radient RS-MS118-PG are essential for compact builds, lightweight racing machines, and specialist applications where every gram counts. Our team of experienced RC hobbyists recognises the value of quality servo selection, and we're confident this Radient product will serve your build requirements exceptionally well.
Key Features
- Micro Size Design — At just 9 grams with dimensions of 22.3 x 11.8 x 26.3 millimetres, this servo fits into the tightest installation spaces without compromising on build integrity, making it perfect for compact RC projects and weight-sensitive applications.
- Analogue Operation — This servo uses straightforward analogue control technology, providing simple, predictable operation without the complexity of digital servos, ideal for builders who value reliability and ease of setup.
- Dual Voltage Compatibility — The servo operates across a 4.8V to 6.0V range, giving you flexibility in power supply options and allowing integration with various battery configurations common in RC car UK builds.
- Responsive Speed Performance — With a speed of 0.14 seconds per 60 degrees at 4.8V and an improved 0.12 seconds per 60 degrees at 6.0V, this servo delivers snappy response times suitable for steering control and precision movements.
- Adequate Torque Delivery — Producing 1.3 kg-cm of torque at 4.8V and 1.5 kg-cm at 6.0V, the servo generates sufficient force for steering duties on micro and compact RC models without excessive power draw.
- Not Waterproof — It's important to note that this servo is not waterproof, so it should be protected from water exposure and is best suited to dry conditions and indoor or sheltered RC environments.
- Age Recommendation 14+ — Radient recommends this product for users aged 14 and above, reflecting the skill level required for proper installation and operation within RC model projects.
Technical Performance
The Radient RS-MS118-PG Micro 9g Analog Servo represents competent engineering designed specifically for modellers working within tight constraints. The servo weighs a mere 9 grams, making it one of the lightest servo options available for RC enthusiasts in the UK market. Its physical dimensions of 22.3 x 11.8 x 26.3 millimetres mean it can be integrated into compact RC vehicles, micro crawlers, and specialist builds where conventional servos would be too large or heavy. The analogue control system operates without complex digital processing, which translates to straightforward wiring, predictable behaviour, and minimal compatibility issues with older RC transmitters and receivers. The voltage range of 4.8V to 6.0V accommodates both four-cell and five-cell NiMH battery packs, as well as lower-voltage lithium polymer configurations, providing flexibility in power system design. Performance metrics are respectable for a micro servo: at the lower voltage of 4.8V, the servo achieves 0.14 seconds per 60-degree movement, whilst at the higher 6.0V specification, this improves to 0.12 seconds, delivering quicker response times for more demanding control scenarios. Torque output scales with voltage, offering 1.3 kg-cm at 4.8V and increasing to 1.5 kg-cm at the maximum 6.0V specification, sufficient for steering control on lightweight RC cars and micro-scale models. The servo's compact footprint and modest weight make it particularly suitable for micro RC crawlers, small-scale bashers, and any specialist RC UK project requiring minimal component footprint. However, builders should note the lack of waterproof construction, meaning this servo must be kept dry and protected from moisture, limiting its suitability for wet-weather outdoor running or water-crossing crawling events.
What's in the Box
- Radient RS-MS118-PG Micro 9g Analog Servo (RDNA0408)
What You Need to Complete
- Compatible RC transmitter and receiver system with analogue servo control capability
- Power source: 4.8V to 6.0V battery (NiMH or LiPo)
- Servo extension cables if required for your installation layout
- Servo arms or horns matched to your control linkage requirements
Frequently Asked Questions
- Is this micro servo suitable for beginners building an RC car in the UK? — Yes, the Radient RS-MS118-PG is an excellent choice for beginners working on compact RC projects. Its analogue operation is straightforward, the servo integrates easily with standard RC systems, and its small size makes it ideal for learning to install components in tight spaces. However, the age recommendation of 14+ should be observed, and adult supervision is recommended for younger hobbyists.
- What voltage battery does this servo require? — This servo operates across a voltage range of 4.8V to 6.0V, compatible with four-cell NiMH battery packs (4.8V nominal) and five-cell NiMH packs (6.0V nominal), as well as lower-voltage lithium polymer batteries. Check your transmitter and receiver system to ensure voltage compatibility across all components.
- How fast is this servo's response time? — At 4.8V, the servo completes a 60-degree movement in 0.14 seconds, and this improves to 0.12 seconds when operated at the maximum 6.0V specification. These response times are adequate for steering control on compact RC models, though more demanding racing applications may benefit from faster digital servos.
- Can I use this servo in wet conditions or for water-crossing crawling? — No, this servo is explicitly not waterproof and should not be exposed to water or moisture. It is designed for dry conditions and is best suited to indoor use or sheltered outdoor RC running. If you require waterproof servo options for water-crossing crawling or wet-weather use, please contact our team for alternative recommendations.
- How does this servo compare to digital micro servos? — The Radient RS-MS118-PG uses analogue control technology, which is simpler, more affordable, and fully compatible with any standard RC transmitter and receiver system. Digital servos offer features like adjustable speed ramps and hold strength, but they require compatible digital radio equipment. For straightforward operation and budget-conscious builders, this analogue servo is an excellent choice.
- Is this servo powerful enough for steering control on my RC model? — With torque output of 1.3 kg-cm at 4.8V and 1.5 kg-cm at 6.0V, this servo generates sufficient force for steering duties on micro and compact RC models. However, for heavier vehicles or high-speed applications requiring high control forces, you may need a more powerful servo option.
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 Radient RS-MS118-PG Micro 9g Analog Servo 1.5kg 0.12s 4.8 - 6.0V RDNA0408 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.
- Brand: Radient
- Model Number: RDNA0408
- Product Type: Micro Analog Servo
- Weight: 9 grams (0.32 oz)
- Shipping Weight: 0.02 kg (0.04 lbs)
- Length: 22.3 mm (22 mm, 0.88 in)
- Width: 11.8 mm (12 mm, 0.46 in)
- Height: 26.3 mm (26 mm, 1.04 in)
- Servo Type: Analog
- Servo Size: Micro
- Control System: Analogue operation
- Speed at 4.8V: 0.14 seconds per 60 degrees
- Speed at 6.0V: 0.12 seconds per 60 degrees
- Torque at 4.8V: 1.3 kg-cm
- Torque at 6.0V: 1.5 kg-cm
- Operating Voltage Range: 4.8V to 6.0V
- Waterproof Rating: Not waterproof
- Age Recommendation: 14+
- Barcode: 841746704278
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
