The KST MS565 HV Contactless Hall Sensors Coreless Tail Servo is a compact 760us tail servo for 450-550 class RC helicopters. KST's MS series uses contactless magnetic Hall sensing to improve accuracy, repeatability, and reliability compared with conventional position feedback.
Verified KST data lists a DC 6.0V-8.4V voltage range, up to 6.5Kgf.cm stalling torque at 8.4V, and 0.035sec/60deg no-load speed at 8.4V. It uses a coreless DC motor, hardened steel gears, contactless position sensing, aluminum alloy case, and 2 ball bearings.
The 35.5 x 15 x 32.5mm case, 25T 6mm output spline, and about 38g weight make MS565 a strong tail-servo option for builders who want fast response with contactless feedback.
Product Images
Features
- 6.5Kgf.cm peak torque - Listed stalling torque reaches 6.5Kgf.cm at 8.4V.
- 0.035sec ultra-fast response - Listed no-load speed reaches 0.035sec/60deg at 8.4V.
- Contactless Hall sensor - KST lists contactless magnetic sensing for improved repeatability.
- 450-550 helicopter focus - KST positions it for this RC helicopter class.
- 760us/560Hz tail format - Intended for compatible tail gyro/control systems.
- Coreless DC motor - Supports smooth, fast tail output.
- Hardened steel gears - Adds durability for tail loads.
- Aluminum alloy case - Provides a rigid mini-servo housing.
- 25T 6mm output spline - Uses the listed spline for compatible horns.
- 2BB construction - Dual ball bearings support the output train.
Specifications
| Parameter | Value |
|---|---|
| Model | KST MS565 |
| Shopify SKU | KST-MS565 |
| Rated Voltage | DC 7.4V |
| Voltage Range | DC 6.0V-8.4V |
| Stalling Torque | 4.2Kgf.cm @ 6.0V; 5.5Kgf.cm @ 7.4V; 6.5Kgf.cm @ 8.4V |
| No-load Speed | 0.05sec/60deg @ 6.0V; 0.04sec/60deg @ 7.4V; 0.035sec/60deg @ 8.4V |
| Working Frequency | 760us / 560Hz |
| Output Shaft Spline | 25T, 6mm |
| Case Material | Aluminum alloy |
| Motor Type | Coreless DC motor |
| Gear Set Material | Hardened steel |
| Position Sensor | Contactless |
| Ball Bearing | 2BB |
| Case Dimensions | 35.5 x 15 x 32.5mm +/-0.2mm |
| Weight | 38g +/-10% |
| Temperature Range | -10C to +65C |
| Soft Start | Programmable |
| Programmable | Yes |
Reference Documents
Application
- 450-550 class RC helicopter tail control - KST positions MS565 for compatible tail-servo applications.
- 760us gyro systems - Intended for systems that support 760us/560Hz tail-servo control.
- Contactless sensor upgrades - Useful when Hall/contactless position sensing is preferred.
- High-speed yaw response - Useful where the setup needs the listed 0.035sec/60deg response.
- HV receiver systems - Works within the listed DC 6.0V-8.4V range when powered correctly.
- Custom compact mechanisms - Can be used outside RC helicopters after verifying signal, voltage, and load.
Packing List
| Description | Quantity |
|---|---|
| KST MS565 coreless servo | 1 |
| Accessory pack | 1 |
FAQ
MS565 uses contactless position sensing and lists 6.5Kgf.cm at 8.4V. DS565X uses potentiometer feedback and lists 6.0Kgf.cm at 8.4V.
No. The current Shopify product is a single variant with SKU KST-MS565.
The technical specification lists 6.5Kgf.cm at 8.4V.
The fastest listed no-load speed is 0.035sec/60deg at 8.4V.
Yes. KST lists the MS565 position sensor as contactless and describes the MS series as using magnetic Hall sensing.
KST's package section confirms one MS565 coreless servo and one accessory pack.
The technical specification lists a 25T, 6mm output shaft spline.
Confirm the 35.5 x 15 x 32.5mm case, 25T 6mm spline, 760us/560Hz signal support, voltage range, and tail linkage clearance.