KST A08 V6 Servo - 3.2Kg.cm 0.09s 8.6g 8mm

Product Code: KST-A08

(8 reviews)

Price: $42.84 save 15%

Description

The new KST A08 V6 is a great low/medium/high voltage fully metal cased servo weighing only 8g (0.3 oz). Unlike the X08 the A08 incorporates a complete case that covers the motor, making the servos much tougher and less susceptible to water ingress, handling and crash damage. Despite this the A08 servo is actually lighter and has more torque than the X08. The A08 is also slightly smaller than the X08, making it suitable for very tight installations.

The KST A08 is especially good for ailerons on discus launched gliders, electric racers, and all models with thin flying surfaces. Despite being only 8 mm thick the powerful coreless DC motor and gearing provide good torque and high speed. The A08 can be operated from a voltage as low as 3.8V (1S LiPo) or as high as 8.4V (2S LiPo). KST servos have excellent geartrain machining tolerances, and this servo is completely slop free, and equal to products costing twice as much. Despite not having an -MG moniker this servo has metal gears, and is very tough.

The KST A08's high torque, good speed, and 8mm thinness make it suitable for many high performance glider, pylon racers and EDF applications. With up to 3.2kg.cm torque the KST A08 is appropriate for F3K, F5D, F5J, many types of high performance models. The accessories include three strong nylon output arms, two double sided, and one single sided, one of which is low profile. This means that when the servos are mounted one in front of the other the control rod of the front one won't foul the rear one.

The KST A08 V6 version is fully programmable using KST's new programming tools.

The extreme reliability and performance of these servos also makes them very suitable for use in film and motion picture industry special effect departments. They are also used in robotic, drone, UAV, UAS, academic research, military, and other highly demanding applications.

KST A08 V6 Servo Specifications
Body dimensions	23.5 mm wide x 8.0 mm thick x 18.9 mm high	0.93" wide x 0.31" thick x 0.74" high
Max dimensions	29.5 mm wide x 8.0 mm thick x 23.0 mm high	1.16" wide x 0.31" thick x 0.91" high
Stall torque (3.8V)	1.4 Kg.cm	19 oz.in
Stall torque (6V)	2.2 Kg.cm	31 oz.in
Stall torque (8.4V)	3.2 Kg.cm	44 oz.in
Weight	8.6 g	0.30 oz
Lead length	15 cm	5.9 in
Operating speed (3.8V)	0.2 sec/60°
Operating speed (6V)	0.13 sec/60°
Operating speed (8.4V)	0.09 sec/60°
Operating voltage	3.8V to 8.4V
Operating temperature	-10 to +50 °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	µs
Pulse width for ± 60º	1000 - 2000 µs
Digital	Yes
Programmable	Yes
Position feedback	Potentiometer
Supplied accessories	3 plastic output arms, 2 arm retaining screws, 4 mounting screws
Optional accessories	Ply Frame for KST X08, Pulley For KST X08, KST X08 Servo Arm Set, Frame with plain bearing for the KST X08, Integrated Drive System/Mono for KST X08, KST Servo Programming Tool 1, KST Servo Programming Tool 2

Reviews 8

24/05/2024 09:05

Review by: John Treble

Direct drive ailerons on 3.4m model

Maidened my modified Tangent Kult yesterday. The modifications were made to the ailerons which used to be top-hinged, but are now centre-hinged to enable them to be driven directly by KST A08 servos. No pushrods! A 2 cell li-ion battery provides about 3Kg/cm torque.
The servos fit neatly between the wing.skins with about 1mm to spare, and the output shaft aligned as best I could manage with the hinge line.
Flew for the best part of an hour. No problems in flight, and two nice landings. Time will tell if the gear trains are sufficiently robust to stand this mistreatment.
Very good little servo!

23/05/2024 14:22

Review by: Greg McGill

KST Servo Review

I have used the small KST 08 servos for some years, now, beginning with the early series that had a reputation for failing - although I had universal good fortune. The servos I purchased recently from Hyperflight have gone into a special DLG, the likes of which I will never have a chance to fly ever again, and so I paid the current price. I am glad I did. Quiet, precise, good centering with either NmHd 4.7v or 2S LiPo 8.2v. Experience elsewhere has shown me that they will work fine with 1S LiPo as well. The only reason for four stars is the current price, which limits what I can afford. Gone are the days of adequate but still cheap servos. As always, Neil at Hyperflight met my purchase with prompt attention and quick delivery. Good on you, Neil!

14/07/2023 14:59

Review by: Bob

KST A08

Great little servos for use on a F5j V tail. Delivered in 26 hours. Excellent.

09/06/2023 10:25

Review by: Steve Richardson

Excellent Servo

Excellent product really pleased with the quality, using this on my crack yak xl rudder
Excellent customer service/support Neil is very helpful thank you for your help

09/06/2023 10:24

Review by: Steve Richardson

Excellent Servo

Excellent product really pleased with the quality, using this on my crack yak xl rudder
Excellent customer service/support Neil is very helpful thank you for your help

24/05/2023 19:37

Review by: Bob

KST A08

Great little servos for use on a F5j V tail. Delivered in 26 hours. Excellent.

20/07/2022 11:08

Review by: Peter Gunning

KST A08 V6 Servo

Great specs for such a small servo. Plenty of power for F3X tails and open up different 'packaging' options in ever smaller fuselages.

03/06/2022 00:01

Review by: Ron Richardson

Service from Neil is quick and he’s responsive quickly to questions. I’m not sure how the deliveries come so fast, an well packed, no damages, I’ve ordered sailplanes and servos, not any problems.