Delivery Included
1 Year Warranty
FEATURES
- For all-purpose giant scale airplanes
- Programmable/HV Brushless Servo
- Custom New high power Brushless Motor
- Suggested upgrade for BLS172SV/177SV
- Programmable and compatible with S.Bus and S.Bus2 systems
- Can be connected to a PC using the CIU-2/-3 USB adapter sold separately
- Final gear material is Stainless Steel
- Upper/middle/bottom: Aluminium Case
CONTENTS
- 1x HPS-A703 Standard Brushless Servo
- Horns
- Mounting Hardware
DETAILS
HPS-A703 S.Bus2 High-Voltage Standard Airplane Servo
High Performance Servo with Brushless Motor
Speed:
0.13 sec/60 (6.6V)
0.12 sec/60 (7.4V)
Torque:
61.0 kgf/cm (6.6V)
847.17.4 ozf/in (6.6V)
66.0 kgf/cm(7.4V)
916.61 ozf/in (7.4V)
Size:
40.5 x 21.0 x 39.4 mm
1.59 x 0.83 x 1.55 in
Weight:
82 g
2.89 oz
Rated Voltage:
DC 6.0V - 7.4V
Operating Voltage:
DC 4.8 - 8.4V
NO DRY BATTERY OR BEC USE
Brand, Model and Product Type
- Brand: Futaba
- Model: FUT05102723-3
- Product Type: Futaba FUT05102723-3 HPS-A703 brushless servo with S.Bus2, Futaba FUT05102723-3 standard servo 66kg 0.12s, Futaba FUT05102723-3 HV digital servo for giant scale aircraft, Futaba FUT05102723-3 with stainless steel gears and aluminium case, Futaba HPS-A703 servo with 25T spline and CIU-3 compatibility
- Product Color: Black
Dimensions
- Product Length: 4.1 cm – standard footprint for large aircraft servo bays
- Product Width: 2.1 cm – compact enough for multi-servo installations
- Product Height: 3.9 cm – optimized for vertical mounting in high-load applications
- Product Weight: 82 g – robust construction for vibration resistance and structural stability
- Shipping Weight: 0.14 kg – includes packaging and mounting accessories
Performance Specifications
- Torque at 7.4V: 66.0 kgf.cm – delivers extreme control authority for oversized control surfaces
- Torque at 6.6V: 61.0 kgf.cm – maintains high output under moderate voltage conditions
- Speed at 7.4V: 0.12 sec/60° – fast actuation for precision maneuvering in large aircraft
- Speed at 6.6V: 0.13 sec/60° – consistent responsiveness across voltage range
Motor and Signal Control
- Motor Type: Custom high-power brushless – ensures efficient, low-friction operation with minimal power draw
- Signal Compatibility: PWM and S.Bus2 – supports both traditional and digital control systems
- PC Connectivity: Compatible with CIU-2 / CIU-3 USB adapter – enables advanced programming and configuration
Construction and Materials
- Gear Type: Stainless steel final gear – built for durability under continuous high-load conditions
- Bearings: Dual ball bearings – enhances mechanical efficiency and reduces internal wear
- Spline Count: 25T – compatible with Futaba-standard servo horns
- Case Material: Aluminium (upper, middle, bottom) – improves heat dissipation and structural rigidity
Voltage and Power Requirements
- Rated Voltage: DC 6.0V – 7.4V – optimized for high-voltage aircraft systems
- Operating Voltage: DC 4.8V – 8.4V – supports a broad range of regulated power sources
- Battery Compatibility: Dry batteries and BEC systems not supported – use regulated LiPo or dedicated power modules only
Application and Use Case
- Servo Type: Standard – ideal for giant scale aircraft requiring high-torque control
- Use Case: Elevator, rudder, flap, and aileron control – engineered for precision and power
- Recommended Aircraft: Large-scale planes and aerobatic giants with demanding control surfaces
- Upgrade Path: Suggested replacement for BLS172SV and BLS177SV servos
What’s in the Box
- 1 × Futaba HPS-A703 Standard 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
- CIU-2 or CIU-3 USB adapter for PC programming (sold separately)
Sold Separately
- Futaba transmitter with programmable servo settings
- CIU-2 / CIU-3 USB adapter
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.
