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KST X20 Combo Brushless Servos X20-2208 X20-1035 Combo Set
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KST X20 Combo Brushless Servos X20-2208 X20-1035 Combo Set
The KST X20 Combo Brushless Servos set combines three X20-2208 V8.0 cyclic servos with one X20-1035 V3.0 tail servo for RC helicopter builds. KST positions the combo for 500-800 class EP/GP helicopters that need a matched cyclic and tail servo package.
Verified KST data lists the X20-2208 cyclic servo at up to 2.5N.m torque at 8.4V and 0.07sec/60deg speed at 8.4V. The included X20-1035 V3.0 tail servo is listed at up to 1.2N.m torque at 8.4V and 0.030sec/60deg speed at 8.4V.
Both servo models use brushless DC motors, hardened steel HLS gears, aluminum alloy cases, and 25T 6mm output splines. The combo is a convenient single-package option for helicopter cyclic-plus-tail servo upgrades.
Product Images
Features
- Complete X20 helicopter servo set - Includes three X20-2208 V8.0 cyclic servos and one X20-1035 V3.0 tail servo.
- 2.5N.m cyclic torque - X20-2208 is listed up to 2.5N.m at 8.4V.
- 0.030sec tail response - X20-1035 V3.0 is listed at 0.030sec/60deg at 8.4V.
- Brushless DC motors - Both included servo models use brushless motors.
- HLS hardened steel gears - KST lists hardened steel High Life Span gear construction.
- 6BB gear support - KST lists 6 ball bearings for the X20 servo construction.
- Aluminum alloy cases - Full metal housings provide rigid mounting.
- 25T 6mm output splines - Both included models use the listed spline size.
- DC 6.0V-8.4V range - Both models support HV receiver power in this range.
- 500-800 class helicopter focus - KST positions the set for compatible EP/GP helicopter builds.
Specifications
| Parameter | Value |
|---|---|
| Model | KST X20 Combo: X20-2208 V8.0 + X20-1035 V3.0 |
| Shopify SKU | KST-X2010352208 |
| Included Servos | 3 x X20-2208 V8.0 cyclic servo; 1 x X20-1035 V3.0 tail servo |
| X20-2208 Rated Voltage | DC 7.4V |
| X20-2208 Voltage Range | DC 6.0V-8.4V |
| X20-2208 Torque | 1.8N.m @ 6.0V; 2.2N.m @ 7.4V; 2.5N.m @ 8.4V |
| X20-2208 Speed | 0.09sec/60deg @ 6.0V; 0.08sec/60deg @ 7.4V; 0.07sec/60deg @ 8.4V |
| X20-2208 Working Frequency | 1520us / 333Hz |
| X20-1035 Rated Voltage | DC 7.4V |
| X20-1035 Voltage Range | DC 6.0V-8.4V |
| X20-1035 Torque | 0.9N.m @ 6.0V; 1.1N.m @ 7.4V; 1.2N.m @ 8.4V |
| X20-1035 Speed | 0.040sec/60deg @ 6.0V; 0.035sec/60deg @ 7.4V; 0.030sec/60deg @ 8.4V |
| X20-1035 Working Frequency | 760us / 560Hz |
| Output Shaft Spline | 25T, 6mm |
| Case Material | Aluminum alloy |
| Motor Type | Brushless DC motor |
| Gear Set Material | Hardened steel HLS |
| Position Sensor | Potentiometer |
| Case Dimensions | 40 x 20 x 40mm +/-0.2mm for both listed servo models |
| Weight | 72g +/-10% per listed servo model |
| Temperature Range | -10C to +65C |
Reference Documents
Application
- 500-800 class RC helicopters - KST positions the combo for compatible EP/GP helicopter builds.
- Swash plate cyclic control - The three X20-2208 servos are intended for cyclic positions.
- Tail rotor control - The X20-1035 V3.0 servo covers the tail-servo position.
- Servo upgrade bundles - Useful when replacing cyclic and tail servos together in one setup.
- HV receiver power systems - Works within the listed DC 6.0V-8.4V range when powered correctly.
- HLS gear applications - Suitable where hardened steel HLS gearing and 6BB support are desired.
- Advanced 3D helicopter setups - Designed for responsive cyclic and fast tail control when the airframe matches the servo ratings.
Packing List
| Description | Quantity |
|---|---|
| KST X20-2208 V8.0 cyclic servo | 3 |
| KST X20-1035 V3.0 tail servo | 1 |
| CNC servo horn | 4 |
| Plastic servo horn | 20 |
| Grommet | 16 |
FAQ
How does the X20 Combo differ from buying X20-1035 alone?
The combo includes three X20-2208 V8.0 cyclic servos plus one X20-1035 V3.0 tail servo. The single X20-1035 product includes only one tail servo and its accessories.
Does OpenELAB list multiple Shopify variants for this product?
No. The current Shopify product is a single variant with SKU KST-X2010352208.
What servos are included?
KST's package section confirms three X20-2208 V8.0 cyclic servos and one X20-1035 V3.0 tail servo.
What is the maximum listed cyclic torque?
The X20-2208 V8.0 specification lists 2.5N.m at 8.4V.
What is the fastest listed tail speed?
The X20-1035 V3.0 specification lists 0.030sec/60deg at 8.4V.
What voltage range do the included servos support?
Both listed servo models support DC 6.0V-8.4V.
What spline do the included servos use?
Both listed models use a 25T, 6mm output shaft spline.
What should I check before installation?
Confirm the 40 x 20 x 40mm case size, cyclic and tail signal formats, 25T 6mm spline, servo horn geometry, and HV power setup.
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