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Power HD A40CHV / A50CHV High-Torque Metal Servo | Gas Engine Turbine RC Aircraft
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Power HD A40CHV / A50CHV High-Torque Metal Servo | Gas Engine Turbine RC Aircraft
Sale price
$73.99
Regular price
Regular price
$73.99
Unit price
per
Frequently Asked Questions
What is the difference between the A40CHV and A50CHV - which one should I choose?
Both servos share the same housing dimensions, gear train, coreless motor, and voltage range (6.0-8.4V). The key difference is the torque/speed trade-off. The A40CHV delivers up to 40 kg-cm torque at 8.4V with faster speed (0.10 sec/60°), making it ideal for applications where quick response is critical such as ailerons and rudder on high-speed aircraft. The A50CHV delivers up to 50 kg-cm torque at 8.4V but is slightly slower (0.16 sec/60°), making it the better choice for heavy elevator and large control surfaces on 100cc+ gas engine or turbine jet aircraft where maximum holding force is required.
What size RC aircraft is the A40CHV / A50CHV designed for?
The A40CHV and A50CHV are engineered for 30cc to 200cc gas engine RC aircraft, large-scale EDF (Electric Ducted Fan) jets, and turbine jet models. They are suitable for aircraft with wingspans typically ranging from 1.5m to 3m+ where standard servos lack sufficient torque to handle large control surfaces under aerodynamic load. They are not recommended for small sport planes or trainers where a lighter, lower-torque servo would be more appropriate.
What voltage should I run the A40CHV / A50CHV at, and do I need a separate BEC?
Both servos operate on 6.0V to 8.4V DC. For maximum performance, running at 8.4V (2S LiHV or regulated supply) delivers peak torque and speed. Most large-scale RC aircraft use a dedicated high-current BEC or separate servo battery pack to power servos independently from the main flight battery. We recommend using a high-quality BEC rated for at least 10A continuous output when running multiple A40CHV/A50CHV servos simultaneously, as high-torque servos can draw significant current under load.
Is the A40CHV / A50CHV compatible with the Power HD PGC programming card?
Yes. Both the A40CHV and A50CHV are compatible with the Power HD PGC series programming card, which allows you to adjust servo parameters including center point, travel limits, speed, and direction without a transmitter. This is particularly useful for fine-tuning servo throws on large-scale aircraft during setup and for matching multiple servos on dual-servo control surfaces.
What gear material does the A40CHV / A50CHV use and how durable is it?
Both servos use a hybrid gear train combining 7075 aluminum alloy and 416 imported stainless steel gears. The 7075 aluminum gears provide lightweight strength for the upper gear stages, while the 416 steel gears handle the high-load output stages. This combination delivers excellent durability under the sustained high-torque demands of large-scale aircraft control surfaces. The dual ball bearing construction further ensures smooth, precise operation and long service life.
What's in the Box
- 1x Power HD A40CHV or A50CHV High-Torque Metal Servo (depending on selected variant) — Servo horn, mounting screws, and receiver not included
Let customers speak for us
Gt5 steering pointometer
Thank you for the rc part i just recived it and it works great there was a misunderstanding about the tracking number but everthing is good now i will buy from you again thank you
Joseph Degiorgio
Soarsky Flysky NB4/NB4+/Pro/Pro+ metal bright green skin radio sticker
I really like this product. The shipping was pretty fast. The green finish looks amazing. Really changed the look of my NB4 pro+.
Thanks Soarskyrc.
David Spencer
Great spares!
So great to be able to get real spares?
Brendan M
Producto recomendado
Yunior
Awesome design and build quality. Purple flake carbonfiber looks awesome. Adds ability to wireless charge the battery in handle.
NATHAN
Products is excellent. Have had this many times. Love them. Easy, convenient, steady
Timothy
👌
Axel Galinat
Bert nice produkt! Thanks for producent this! Keep up the good work :)
Flysky 303 with soarsky mod/mount for Flysky Noble+
Nikola Awasthi
nice frame bit pricey but nice.
nice frame easy to put together had some issues with leds but after reording new leds works fine.
MICHAEL ALEXANDER
Good response
Quick and efficient with no concern
Bill Brandt
Easy install. Works great and fixed my glitchy servo.
Kevin
Works as it should.
Direct replacement part. Fitment was perfect and it fixed my glitchy servo problem.
Kevin Martin
Super Ware
Markus Feyler
Amazing product and excellent shipping by soarsky
Great product...though I have nb4 ...but nb4+ is way better than nb4
Gurpinder Singh
I love my FLYSKY GT5 transmitter and was so distraught when the steering potentiometer started to fail. Luckily a friend mentioned SoarSky and i ordered a replacement and am back to enjoyable RCing
Josh
Description
Power HD A40CHV & A50CHV — available at SoarSky
Professional High-Torque Metal Servo for RC Aircraft
The Power HD A40CHV and A50CHV are premium all-metal high-torque servos engineered specifically for serious RC aircraft applications. Perfect for 30–200cc electric, gas engine, and turbine jet aircraft, these heavy-duty servos deliver exceptional power and precision for demanding flight operations. Select your model from the dropdown — A40CHV for faster speed, A50CHV for maximum torque.
Key Features
- ✅ OEM Direct Fit for 30–200cc RC Aircraft — Engineered for gas engine, EDF, and turbine jet applications requiring high-torque precision control
- ✅ Full CNC Red Aluminum Housing — Precision-machined metal casing for maximum durability under high-stress flight loads
- ✅ 7075 Aluminum + 416 Imported Steel Gears — Superior gear train strength for long-term reliability in demanding conditions
- ✅ High-Voltage Coreless Motor (6.0–8.4V) — Fast, powerful response across a wide voltage range
- ✅ Japanese Potentiometer — Premium imported component for accurate, repeatable positioning
- ✅ PGC Series Programmable — Adjustable parameters via offline programming card; dual ball bearings for smooth, precise operation
Compatibility & Ideal Applications
- EDF (Electric Ducted Fan) aircraft
- Gas engine RC planes (30–200cc)
- Turbine jet aircraft
- Large-scale aerobatic models
- High-performance sport planes
Technical Specifications
Source: Power HD official specifications
A40CHV — Torque & Speed:
- 6.0V: 25.0 kg-cm (347.2 oz-in) / 0.14 sec/60°
- 7.4V: 35.0 kg-cm (486.1 oz-in) / 0.12 sec/60°
- 8.4V: 40.0 kg-cm (555.5 oz-in) / 0.10 sec/60°
A50CHV — Torque & Speed:
- 6.0V: 35.0 kg-cm (486.1 oz-in) / 0.19 sec/60°
- 7.4V: 45.0 kg-cm (625.0 oz-in) / 0.17 sec/60°
- 8.4V: 50.0 kg-cm (694.4 oz-in) / 0.16 sec/60°
Shared Specifications (both models):
- Operating Voltage: 6.0–8.4V DC
- Weight: 80g (2.82 oz)
- Bearing Type: Dual Ball Bearing
- Motor Type: Coreless Motor
- Gear Type: 7075 Aluminum + 416 Steel
- Operating Temperature: -20°C to 60°C
- Frequency: 1520μs / 333Hz
- Dimensions: 40.7 × 20.5 × 38.7mm (1.60" × 0.81" × 1.52")
Which model should I choose?
A40CHV: Best for applications requiring faster speed (0.10 sec/60° at 8.4V) with excellent 40 kg-cm torque.
A50CHV: Maximum torque option (50 kg-cm at 8.4V) for heavy control surfaces and the most demanding applications.
⚠️ Installation Note
Package includes servo body only. Servo horn, mounting screws, and receiver are not included. Ensure your power supply supports 6.0–8.4V DC before installation. Compatible with Power HD PGC series programming card for parameter adjustment.
Related Accessories
Complete your RC aircraft build with these compatible products:
- PowerHD Servo Arm — Compatible servo horns for A-series servos
- PowerHD WT80 Coreless Digital Servo 35KG — Alternative high-torque option for large-scale aircraft
- PowerHD D15 Servo + G1 Gyroscope Combo — Gyro-stabilized servo solution for fixed-wing aircraft
Shipping Info
🏭 Fulfillment Warehouses
SoarSky operates warehouses in the US, Europe, and China. Orders are fulfilled from the nearest local warehouse. If local stock is unavailable, your order will ship from our China warehouse and international shipping times will apply.
💰 Shipping Rates
| Type | Condition | Cost |
|---|---|---|
| Free Shipping | Orders over $100 | Free |
| Standard Shipping | Orders under $100 | Based on weight & address |
| International Shipping | All international orders | Based on destination & weight |
💡 Tax Notice: Import taxes are covered by SoarSky RC for most countries. For a small number of countries where local regulations require the recipient to pay taxes, the amount is based on the declared value set by SoarSky RC.
⏱️ Dispatch & Delivery Times
⚡ Most orders are dispatched within 48 hours of placement.
| Region | Estimated Delivery |
|---|---|
| Domestic (US) | 5–10 business days |
| International | 10–15 business days |
* Customs processing may affect international delivery times.
🚫 Shipping Restrictions
⚠️ Important: We cannot deliver to PO Boxes, APO/FPO, or other military addresses.
Some remote areas may experience longer delivery times or limited shipping options. We will notify you if any issues arise.
📦 Order Tracking
Once your order ships, you will receive a confirmation email with a tracking number. Track your shipment via:
| Platform | Link |
|---|---|
| 17Track | www.17track.net |
| SoarSky Order Tracker | soarskyrc.com/pages/track-order-1 |
📬 Contact Us
If you encounter any issues such as damaged items or lost packages, please contact our customer service team as soon as possible and we will work to resolve it promptly.
✅ Email: soaringskystore@protonmail.com