Overview
The Futaba HPS-HT700 Low Profile Brushless Servo is a high-performance tail servo engineered for competitive 3D and F3C aircraft applications. Built around a brushless motor with metal gears, this compact servo delivers exceptional speed and precision in a streamlined design that won't compromise aerodynamic performance or add unnecessary weight to your aircraft. Whether you're flying challenging 3D maneuvers or precision F3C routines, the HPS-HT700 provides the response and control authority needed to execute demanding flight profiles with confidence. This servo is ideal for RC aircraft enthusiasts in the UK who demand professional-grade performance from their tail authority systems.
Designed by Futaba—a name synonymous with reliability and innovation in radio control since 1962—the HPS-HT700 represents the pinnacle of servo technology for dedicated RC pilots. The low-profile case is engineered to fit seamlessly into tight tail boom installations without sacrificing internal robustness or control precision. With support for both traditional PWM control and modern S.BUS2 protocol, this servo integrates effortlessly into contemporary RC aircraft setups, offering flexibility whether you're using legacy or next-generation radio systems.
The servo's brushless motor technology eliminates the wear and maintenance associated with brushed motors, ensuring long-term reliability and consistent performance across countless flight hours. Combined with Futaba's reputation for quality construction and customer support, the HPS-HT700 is the choice for serious RC aircraft builders and competitors who refuse to compromise on tail control performance.
Key Features
- Brushless Motor Technology — The HPS-HT700 utilises a brushless motor, which delivers superior reliability and eliminates brush wear, ensuring consistent performance throughout the servo's lifespan whilst reducing maintenance requirements compared to traditional brushed alternatives.
- Ultra-Fast Response Speed — Achieving 0.045 seconds per 60 degrees at 7.4V, this servo responds with exceptional rapidity to control inputs, enabling precise execution of aggressive 3D maneuvers and tight F3C routines without lag or hesitation.
- Powerful Torque Delivery — With 9.6 kgf·cm of torque at 7.4V, the HPS-HT700 generates sufficient control authority for demanding aerobatic maneuvers, precision hovering, and recovery from extreme flight attitudes, ensuring the tail stays exactly where you command it.
- Low-Profile Compact Design — Measuring just 40.5 × 21.0 × 26.2 mm, this servo fits into confined tail boom spaces without extending beyond typical fuselage profiles, maintaining optimal aerodynamic efficiency and weight distribution on your aircraft.
- Lightweight Construction — At only 56 grams, the HPS-HT700 minimises tail-end weight, reducing rotational inertia and allowing smoother, more responsive control whilst maintaining overall aircraft balance and flight performance.
- Metal Gear Construction — The servo features robust metal gears throughout the drive train, with a high-strength metal final-stage gear that withstands the torque loads of aggressive flying whilst maintaining backlash-free precision.
- Dual Ball Bearing Motor Support — Internal dual ball bearings support the brushless motor, ensuring smooth, frictionless rotation and contributing to both speed performance and long-term mechanical reliability even under sustained high-load conditions.
- Multi-Protocol Control Compatibility — Supporting PWM, S.BUS, and S.BUS2 command protocols, this servo integrates seamlessly with both traditional and modern Futaba radio systems, offering flexibility for diverse RC aircraft setups throughout the UK.
- Wide Voltage Operating Range — Operating across 4.8V to 8.4V with a rated voltage of 6.0V to 7.4V, the servo delivers consistent performance whether powered by standard NiMH packs or modern LiPo batteries, adapting to your preferred power source.
- Aluminium Case Construction — The servo body features an aluminium upper, middle, and lower case design, providing lightweight structural rigidity that protects internal components whilst keeping overall weight to a minimum.
- 25-Tooth Metal Spline — The servo features a standard 25-tooth spline with 6mm bore diameter, ensuring compatibility with a wide range of aftermarket servo horns and mechanical linkages available throughout the RC hobby market.
- Programmable Operation — The HPS-HT700 supports programmable switching between 1520µS and 760µS throw ranges, allowing you to optimise tail authority for different flight modes or adapt to specific F3C competition requirements without physical modification.
Technical Performance
The Futaba HPS-HT700 represents the convergence of lightweight engineering and high-performance servo technology specifically tailored for competitive 3D and F3C aircraft applications. At its core sits a brushless HPS motor—Futaba's proprietary brushless motor design—that eliminates the frictional losses and maintenance requirements of brushed alternatives whilst delivering exceptional responsiveness. The servo's ultra-rapid 0.045-second response time at maximum voltage (7.4V) ensures that control inputs translate to tail movement with minimal delay, critical when executing precision maneuvers or recovery from extreme flight attitudes. Even at reduced voltage (6.6V), the servo maintains impressive 0.05-second response, demonstrating consistent performance across the operating voltage range.
Torque delivery is equally impressive, with 9.6 kgf·cm available at 7.4V—sufficient to maintain precise tail authority throughout aggressive aerobatic sequences, 3D hovering, and high-speed inverted flight. The servo's metal gear train, featuring high-strength metal final-stage gears and supporting 1-3 stage metal gear reduction, handles these loads without backlash or deflection. Internally, dual ball bearings support the brushless motor, minimising friction and mechanical resistance, which directly contributes to both the servo's speed performance and its ability to sustain demanding flight patterns. The all-metal gear construction ensures longevity under the repeated high-torque cycles experienced during competitive flying, where servo reliability is non-negotiable.
Build quality extends to the physical envelope: the servo's aluminium upper, middle, and lower case sections provide structural rigidity whilst maintaining a total weight of just 56 grams—a remarkable achievement that reflects Futaba's engineering excellence. The low-profile dimensions (40.5 × 21.0 × 26.2 mm) were specifically engineered to fit into tight tail boom installations on modern 3D and F3C aircraft without protruding beyond the fuselage profile, preserving aerodynamic integrity. Voltage flexibility is inherent throughout: the servo operates from 4.8V to 8.4V, with a rated range of 6.0V to 7.4V, allowing pilots to choose either traditional 6-volt NiMH battery packs or modern LiPo batteries depending on their aircraft power system and performance requirements. The 25-tooth spline (6mm bore) follows industry standards, ensuring compatibility with the vast range of servo horns and mechanical linkages available to UK RC aircraft enthusiasts.
What's in the Box
- 1× Futaba HPS-HT700 Low Profile Brushless Servo (complete with connector and servo lead)
- Multiple servo horns for mechanical linkage options
- Mounting hardware (screws and fasteners for installation)
Frequently Asked Questions
- Is the Futaba HPS-HT700 suitable for 3D and F3C aircraft? — Yes, this servo is specifically designed and engineered for competitive 3D and F3C flying. Its combination of ultra-fast response (0.045 sec/60°), powerful torque (9.6 kgf·cm), and programmable throw switching (1520µS/760µS) make it ideal for both precision flying and aggressive aerobatics, which are central to 3D and F3C competition disciplines.
- What is the difference between the HPS-HT700 and standard brushed tail servos? — The HPS-HT700 features brushless motor technology, which eliminates brush wear, reduces maintenance requirements, and delivers superior consistency compared to brushed alternatives. The brushless design also contributes to the servo's exceptional speed and responsiveness, making it more suitable for demanding competitive flying than conventional brushed servos.
- What battery voltage does the HPS-HT700 require? — The servo is rated for 6.0V to 7.4V, allowing operation on either standard 6-volt NiMH battery packs or 2-cell LiPo batteries (7.4V nominal). It also operates across a wider range of 4.8V to 8.4V, providing flexibility if you need to run it at slightly reduced or elevated voltages depending on your aircraft's power system configuration.
- Can the HPS-HT700 be used with modern Futaba radio systems? — Absolutely. The servo supports PWM, S.BUS, and S.BUS2 control protocols, making it fully compatible with current Futaba radio systems as well as legacy PWM-based receivers. This multi-protocol support ensures seamless integration whether you're using an older or newer radio control setup.
- How does the low-profile design benefit my aircraft? — The compact 40.5 × 21.0 × 26.2 mm envelope fits into tight tail boom installations without extending beyond typical fuselage profiles, preserving aerodynamic efficiency. At just 56 grams, it also minimises tail-end weight, improving overall aircraft balance and response characteristics during flight.
- Is the HPS-HT700 reliable for competitive flying? — Yes. The servo features metal gears throughout, dual ball bearing motor support, brushless motor technology, and robust aluminium case construction—all engineered for reliability during sustained competitive use. Futaba's reputation for servo quality, combined with nationwide UK support through authorised dealers, ensures you have a dependable component for competition flying.
- What is programmable throw switching, and why does it matter? — The HPS-HT700 supports switching between 1520µS and 760µS servo throw ranges, allowing you to adjust maximum servo travel without physical modification. This is valuable for adapting to different flight modes or F3C competition rules without mechanically altering your linkages or control setup.
- What horns and spline does the HPS-HT700 use? — The servo features a standard 25-tooth spline with 6mm bore diameter, compatible with most aftermarket servo horns and linkages available in the UK RC hobby market. The box includes multiple horns, but additional options are readily available from Futaba and third-party suppliers.
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 Futaba HPS-HT700 Low Profile Brushless Servo MG PWM/S.BUS2 9.6kg 0.045s 4.8V - 7.4V 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: Futaba
- Model Number: FUT05102715-3
- Product Type: HPS-HT700 Low Profile Brushless Servo
- Servo Size: Low Profile
- Colour: Black
- Motor Type: Brushless (HPS motor)
- Dimensions: 40.5 × 21.0 × 26.2 mm (1.59 × 0.83 × 1.03 inches)
- Weight: 56 g (1.97 oz)
- Shipping Weight: 0.11 kg (0.24 lb)
- Max Torque (7.4V): 9.6 kgf·cm (133.3 ozf·in)
- Max Torque (6.6V): 8.6 kgf·cm (119.4 ozf·in)
- Max Speed (7.4V): 0.045 seconds per 60 degrees
- Max Speed (6.6V): 0.05 seconds per 60 degrees
- Rated Voltage: DC 6.0V - 7.4V
- Operating Voltage: DC 4.8V - 8.4V
- Command Protocol: PWM, S.BUS, S.BUS2
- Spline: 25-tooth (Ø6mm)
- Spline Material: Metal
- Gear Material: Metal (1-3 stage metal gears)
- Final Stage Gear: High-strength metal
- Case Material: Aluminium (upper, middle, and lower case sections)
- Bearings: Dual ball bearing motor support
- Circuit: Digital
- Programmable Features: 1520µS/760µS throw switching
- Throw Range Options: 1520µS or 760µS (programmable)
- Included Accessories: 1× HPS-HT700 Low Profile Brushless Servo, Horns, Mounting Hardware
- Battery Type: LiPo or NiMH (6.0V - 7.4V rated)
- No Dry Battery Use: Not compatible with dry cell batteries
- Age Recommendation: 14+
- Barcode: 4513886036637
Product Description of Futaba FUT05102715-3 HPS-HT700 brushless servo
The Futaba FUT05102715-3 HPS-HT700 brushless servo with S.Bus2 is a high-performance, low-profile tail servo engineered for precision rudder control in 3D and F3C aircraft. Designed specifically for 500–800 class helicopters, this black servo delivers exceptional speed and torque, making it ideal for demanding maneuvers and aggressive flight patterns. With a brushless motor, metal gear construction, and support for both PWM and S.Bus2 protocols, the Futaba FUT05102715-3 low profile servo 9.6kg 0.045s offers the responsiveness and durability required by advanced pilots. Its compact dimensions and lightweight build ensure seamless integration into tight tail boom assemblies without compromising structural balance or control authority.
Key features of the Futaba FUT05102715-3 HPS-HT700 brushless servo
- Brushless motor – delivers smooth, high-efficiency operation with minimal wear
- Low-profile design – fits compact tail bays in 500–800 class helicopters
- High torque output – 9.6kgf.cm at 7.4V for authoritative rudder control
- Ultra-fast response – 0.045 sec/60° at 7.4V for precise tail corrections
- Pulse width switching – supports both 760uS and 1520uS for gyro compatibility
- Aluminium case – enhances heat dissipation and structural rigidity
- 25T spline – ensures compatibility with standard Futaba horns and linkages
Why is the Futaba FUT05102715-3 programmable tail servo for 3D/F3C aircraft ideal for precision flying?
The Futaba FUT05102715-3 programmable tail servo for 3D/F3C aircraft is built to meet the demands of precision aerobatics and competitive flight routines. With a blazing-fast response time of 0.045 seconds per 60° at 7.4V, pilots can execute rapid rudder corrections and maintain tight control during complex maneuvers. The programmable nature of the servo allows users to fine-tune performance parameters, ensuring optimal behavior across different flight modes. Whether you're flying aggressive 3D patterns or executing smooth F3C transitions, this servo delivers the responsiveness and stability needed to stay in control.
How does the Futaba HPS-HT700 servo with 760uS/1520uS switching enhance gyro compatibility?
Compatibility with modern gyro systems is essential for tail servos, and the Futaba HPS-HT700 servo with 760uS/1520uS switching offers flexible signal support to meet this need. By allowing users to switch between 760uS and 1520uS pulse widths, the servo ensures seamless integration with a wide range of tail gyros used in helicopter setups. This adaptability eliminates signal mismatches and ensures that the servo responds accurately to gyro commands, resulting in smoother tail control and reduced drift during flight. It’s a critical feature for pilots who demand precision and reliability from their tail systems.
What makes the Futaba FUT05102715-3 with aluminium case and 25T spline durable under stress?
Durability is a key consideration in high-performance helicopter servos, and the Futaba FUT05102715-3 with aluminium case and 25T spline is built to withstand the rigors of aggressive flight. The full aluminium housing provides excellent heat dissipation and structural integrity, protecting internal components from vibration and impact. The 25T spline ensures secure linkage with standard Futaba horns, minimizing play and maximizing control fidelity. Combined with metal gears and a brushless motor, this construction delivers long-term reliability even under continuous high-load conditions, making it a trusted choice for serious pilots.
Is the Futaba low profile servo for helicopters and rudder control suitable for compact builds?
The Futaba low profile servo for helicopters and rudder control is specifically designed for installations where space is limited but performance cannot be compromised. Measuring just 40.5 × 21.0 × 26.2 mm and weighing only 56 g, the servo fits easily into narrow tail boom assemblies and compact fuselage designs. Its low-profile form factor reduces aerodynamic drag and allows for cleaner cable routing, while still delivering the torque and speed needed for responsive rudder control. This makes it an ideal solution for 500–800 class helicopters where every gram and millimeter counts.
How does the Futaba FUT05102715-3 HPS-HT700 brushless servo with S.Bus2 support advanced control systems?
The Futaba FUT05102715-3 HPS-HT700 brushless servo with S.Bus2 supports both PWM and S.Bus2 protocols, allowing it to integrate seamlessly with traditional receivers and advanced digital control systems. S.Bus2 compatibility enables streamlined wiring and centralized configuration, reducing setup complexity and improving reliability. This dual-protocol support ensures that the servo can be used across a wide range of aircraft builds, from legacy systems to cutting-edge telemetry-enabled platforms. It’s a future-proof feature that adds flexibility and scalability to any helicopter setup.
What performance advantages does the Futaba FUT05102715-3 low profile servo 9.6kg 0.045s offer for tail control?
Tail control demands both speed and strength, and the Futaba FUT05102715-3 low profile servo 9.6kg 0.045s delivers on both fronts. With a torque rating of 9.6kgf.cm at 7.4V and a response time of just 0.045 seconds per 60°, the servo provides crisp, authoritative rudder movements that enhance flight stability and maneuverability. This combination of power and speed is especially beneficial during high-speed transitions, pirouettes, and tail-heavy maneuvers where precision is critical. The servo’s performance profile makes it a top-tier choice for pilots who prioritize control accuracy and responsiveness.
For helicopter pilots seeking a high-speed, high-torque tail servo with advanced signal compatibility and rugged construction, the affordable Futaba HPS-HT700 with 0.045s speed and 9.6kg torque offers unmatched value and reliability. Buy Futaba FUT05102715-3 servo with mounting hardware and horns today.
Technical Specifications of Futaba FUT05102715-3 HPS-HT700 brushless servo
Brand, Model and Product Type
- Brand: Futaba
- Model: FUT05102715-3
- Product Type: Futaba FUT05102715-3 HPS-HT700 brushless servo with S.Bus2, Futaba FUT05102715-3 low profile servo 9.6kg 0.045s, Futaba FUT05102715-3 programmable tail servo for 3D/F3C aircraft, Futaba FUT05102715-3 with aluminium case and 25T spline, Futaba HPS-HT700 servo with 760uS/1520uS switching
- Product Color: Black
Dimensions
- Product Length: 4.1 cm – compact enough for tight tail boom installations
- Product Width: 2.1 cm – low-profile form factor ideal for helicopter rudder bays
- Product Height: 2.6 cm – streamlined for minimal aerodynamic disruption
- Product Weight: 56 g – lightweight for optimal balance and reduced tail load
- Shipping Weight: 0.11 kg – includes packaging and accessories
Performance and Response
- Torque at 7.4V: 9.6 kgf.cm – delivers powerful tail authority for 3D and F3C maneuvers
- Torque at 6.6V: 8.6 kgf.cm – maintains control precision under moderate voltage
- Speed at 7.4V: 0.045 sec/60° – ultra-fast response for aggressive rudder inputs
- Speed at 6.6V: 0.05 sec/60° – consistent actuation across voltage range
Motor and Signal Control
- Motor Type: Brushless – ensures smooth operation and long-term reliability
- Signal Compatibility: PWM and S.Bus2 – supports both conventional and digital control systems
- Pulse Width Switching: 760uS/1520uS – adaptable for various tail gyro configurations
Construction and Materials
- Case Material: Aluminium – enhances heat dissipation and structural rigidity
- Gear Type: Metal – built for durability under high torque loads
- Spline Count: 25T – compatible with standard Futaba servo horns
Voltage and Power Requirements
- Rated Voltage: DC 6.0V – 7.4V – optimized for high-voltage tail servo applications
- Operating Voltage: DC 4.8V – 8.4V – supports a broad range of power sources
- Battery Compatibility: Dry batteries not supported – use regulated power systems only
Application and Use Case
- Servo Type: Low Profile – ideal for 500–800 class helicopters and compact aircraft builds
- Use Case: Tail servo for 3D/F3C aircraft – engineered for precision rudder control
- Recommended Aircraft: Helicopters requiring fast, high-torque tail response
What’s in the Box
- 1 × Futaba HPS-HT700 Low Profile Brushless Servo
- Servo horns
- Mounting hardware
What You Require
- Compatible Futaba transmitter with S.Bus2 support
- Power source within 4.8V to 8.4V range
Sold Separately
- Futaba transmitter with programmable tail setting
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