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KST HS08A Wing Servo - 0.11s 11.0g 8mm

Product Code: KST-HS08A
 (7 reviews)

Price: $52.12

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KST delivers once again with the KST HS08 series competition servos for F5J glider pilots and soaring enthusiasts who demand the best! The all new HS08 are almost as compact as the much loved KST X08 series and offer power and performance levels approaching that of the X10 Mini servos in an 8 mm thick case. The slim 8mm thick casing is crafted from 7075 aluminium alloy, so not only do these servos look fantastic but they are also very rigid and robust.

The HS08 series are available with wing mounting tabs (A version) or normal mounting tabs (B version), to allow convenient installations in fuselages or wings or even tail surfaces. This is the KST HS08A, the wing mount version

The KST HS08A has a hardened steel drive train and a coreless motor capable of running all the way from 3.8V to 8.4V (1S to 2S LiPo) making these WV (wide voltage range) servos will deliver the power and reliability you need.

KST HS08A Features
Compact and light weight design
Excellent torque and speed
Wide 1S to 2S voltage range
Designed for high performance RC Gliders
Excellent heat dissipation
Ultra slim 8mm body
7075 Alloy casing
Hardened Steel gears
Wing mounting tabs

KST HS08A Wing Servo Specifications
Body dimensions 23.5 mm wide x 8.0 mm thick x 25.3 mm high 0.93" wide x 0.31" thick x 1.00" high
Max dimensions 29.5 mm wide x 8.0 mm thick x 29.0 mm high 1.16" wide x 0.31" thick x 1.14" high
Stall torque (3.8V) 2.8 39
Stall torque (6V) 4.5 62
Stall torque (7.4V) 5.2 72
Weight 11 g 0.39 oz
Lead length 15 cm 5.9 in
Operating speed (3.8V) 0.21 sec/60°
Operating speed (6V) 0.13 sec/60°
Operating speed (7.4V) 0.11 sec/60°
Operating voltage 3.8V to 8.4V
Operating temperature -20 to +65 °C
Bearings 2 ball bearings
Gear material Hardened Steel
Case material 7075 aluminium alloy
Motor type Coreless DC motor
Working frequency 333 Hz
Dead band/resolution 1 µs
Pulse width for ± 60º 1000 - 2000 µs
Digital Yes
Programmable No
Position feedback Potentiometer
Supplied accessories 3 output arms, 2 arm retaining screws, 4 mounting screws
Optional accessories Pulley For KST X08, KST X08 Servo Arm Set, Frame with plain bearing for the KST X08, Integrated Drive System/Mono for KST X08, VM Spring Loaded Pulley Set for X08

Stall Current: 0.68A
Continuous rated Current: 0.25A

Reviews 7  

 Review by:

KST HS08A wing servos

I recently ordered a pair of these servos plus 4 other KST servos and some bits and pieces from Hyperflight as part of a refurbishment of an old slope soarer. There was a minor problem with the bits and pieces, but that was very quickly remedied after a phone call to Neil. Excellent servos, and excellent service, as always, from Hyperflight

 Review by:

Very pleased with the service you provide.

 Review by:

Not centering well on f3f glider

Installed these in an f3b glider on ailerons and they are not centering well. Mini x10s are fine. I will have to do some additional testing, I will pull servos and test centering.

 Review by:

Havent started mounting yet. Service is excellent, but paying by Paypal vas expensive.

 Review by:


First time used these servos , cantering is good . I am waiting for the weather for test

 Review by:

This KST servo has more backlash than the MKS 6100 servo, but it works well under all voltages. If you prefer no backlash, it's better to use the MKS.

 Review by:

F5J Flap servo

Bravely fitted these as Flap servos in an El Nino. A 10mm servo would have been a very tight fit in the thin wing. Fits perfectly in the same frames as the rest of the X8 range. Landed several times today and threw the glider around in breezy conditions. Behaved perfectly on 7.5V.

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