KST HS08A Wing Servo - 5.2Kg.cm 0.11s 11.0g 8mm

Product Code: KST-HS08A

(7 reviews)

Price: $55.15

Description

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 Kg.cm	39 oz.in
Stall torque (6V)	4.5 Kg.cm	62 oz.in
Stall torque (7.4V)	5.2 Kg.cm	72 oz.in
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

More details

KST HS08 Data sheet [435kb]

Reviews 7

16/05/2023 16:32

Review by: Ian W

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

15/03/2023 11:28

Review by: John Postle

Very pleased with the service you provide.

09/10/2022 16:45

Review by: Anonymous

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.

30/03/2022 11:42

Review by: Anonymous

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

17/02/2021 14:52

Review by: Vladimir

KST HS08A

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

03/10/2020 21:28

Review by: Nicolas

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.

29/09/2020 17:23

Review by: Jim Hathaway

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.