Welcome to this edition of the Thermal Circle in this edition KST Competition servos from Model Flight.

Available from:

KST HS08A Wing Mount Servo

The KST HS08A is the perfect thin wing servo for F5J models or any model up to 2.5kg
Features
•    Compact and light weight design
•    Excellent torque and speed
•    Designed for high performance RC Gliders
•    Excellent heat dissipation
•    Ultra slim gear train
•    Dual BB
•    
•    Product Information
 
The KST HS08A competition servo is for glider pilots and soaring enthusiasts who demand the best! The all new KST HS08A is almost as compact as the much loved X08 series and offers power and performance levels to rival the popular X10 Mini servos. Featuring a slim 8mm wide casing crafted from 7075 Alloy not only do these servos look fantastic but they also offer the competition winning performance you would expect from KST.
 
Specs
Operating Voltage:
DC3.8V-8.4V
Size:
23.5mm x 8mm x 25.25mm
Torque:
2.8Kg.cm@3.8V 4.5Kg.cm@6.0V 5.2KG@7.4v
Speed:
0.21sec/60°@3.8V
0.13sec/60°@6.0V
0.11sec/60°@7.4V
Weight:
11g
Stall Current:
0.68A
Rated Current:
0.25A
Rated Speed:
0.20sec/60°@6.0V
Default Travel Angle:
±60° = 120° total travel
Operating Temperature Range:
-20°C......+65°C
Working Frequency:
1520us/333Hz, 1000us-2000us
Motor:
Coreless motor
Ball Bearing:
2BB

Available from:

KST X10 MINI wing servo

The KST X10 Mini V2 wing servo is a wide voltage servo ideal for use in glider wings and other models with thin airfoils.
Features
•    Slim 10 mm body
•    Excellent 7.5 Kg.cm torque
•    Compact and light weight design
•    Good torque and speed
•    Wide 4S NiMH to 2S LiPo voltage range
•    Excellent heat dissipation
•    7075 Alloy casing
•    Hardened Steel gears
•    Designed for lightweight high performance RC Gliders

 
With only slightly less torque than the larger MKS HV6130. The KST X10 V2 Mini has a hardened steel drive train and a coreless motor capable of running all the way from 4.8V to 8.4V (4S NiMH to 2S LiPo) making these servos ideal for electric-powered models (most ESCs output 5.5V) as well as most gliders. With its high power output, metal gear train and being 10mm thin this is ideal for flaps especially.
The accessories included are two strong nylon output arms, and one metal arm allowing very strong linkages to be used.
 
Specs
Body dimensions
30.0 mm wide x 10.0 mm thick x 29.5 mm high
Max dimensions
42.0 mm wide x 10.0 mm thick x 39.0 mm high
Stall torque (4.8V)
4.5 Kg.cm
Stall torque (6V)
5.5 Kg.cm
Stall torque (8.4V)
7.5 Kg.cm
Weight
23 g
Lead length
15 cm
Operating speed (4.8V)
0.16 sec/60°
Operating speed (6V)
0.13 sec/60°
Operating speed (8.4V)
0.09 sec/60°
Operating voltage
4.8V to 8.4V
Operating temperature
-20 - +65 °C
Bearings
2 ball races
Gear material
Hardened steel
Case material
7075 aluminium
Motor type
Coreless DC
Working frequency
333 Hz
Dead band/resolution
2 µs
Pulse width for ± 60º
900-2100 µs
Digital
Yes
Programmable
No
Position feedback
Potentiometer
Supplied accessories
2 strong plastic output arms, 1 metal arm, 2 arm retaining screws, 3 mounting screws

Available from:

KST HS08B servo

Features
•    Coreless motor
•    Dual BB
•    Metal gear train
•    Compact and lightweight design
•    Excellent torque and speed
•    Designed for high performance gliders and electric models
•    Excellent heat dissipation
•    Ultra slim 8mm body
Product Information
 
The all new KST HS08B digital metal geared servo is a slim 8mm wide, weighs a mere 11gm and is powerful for its compact size. With a hardened steel drive train and a coreless powerplant capable of HV input the HS08B will deliver the power and reliability you need to win! The all new KST HS08B servos are almost as compact as the much loved X08 series and offer power and performance levels to rival the popular X10 Mini servos. Featuring a slim 8mm wide casing crafted from 7075 Alloy not only do these servos look fantastic but can deliver up to 5.2 kg.cm of torque on 7.4V
 
Specs
Operating Voltage:
DC3.8V-8.4V
Size:
23.5mm x 8mm x 25.25mm
Torque:
2.8Kg.cm@3.8V 4.5Kg.cm@6.0V 5.2KG@7.4v
Speed:
0.21sec/60°@3.8V 0.13sec/60°@6.0V 0.11sec/60°@7.4V
Weight:
11g
Stall Current:
0.68A
Rated Current:
0.25A
Rated Speed:
0.20sec/60°@6.0V
Default Travel Angle:
±60° = 120° total travel
Operating Temperature Range:
-20°C......+65°C
Working Frequency:
1520us/333Hz, 1000us-2000us
Motor:
Coreless motor
Ball Bearing:
2BB

Available from:

KST X08 V6.0 Digital Metal Gear 2.8kg Wing Servo

Features
•    Metal geared servo
•    Perfect for ailerons on discus launched gliders, electric racers, and all models with thin flying surfaces
•    Now programmable with the KST Tool #1 (sold separately)
Product Information
 
The KST X08 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 X08 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 X08's high torque, good speed, and 8mm thinness make it suitable for many high-performance gliders, pylon racers and EDF applications. With up to 2.8kg.cm torque the KST X08 is appropriate for F3K, F5D, F5J, many types of high-performance models.
The new V6 version has the same great specifications as the V5 but allows programming using KST's new programming tools.
The extreme reliability and performance of these servos also make them very suitable for use in film and motion picture industry special effect departments. They are also used in robotic, drones, UAVs, UAS, academic research, military, and other highly demanding applications.
Specs
Rated Voltage
DC 7.4V
Voltage Range
DC 3.8V-8.4V
Torque
1.4 kg.cm@3.8V
2.2 kg.cm@6.0V
2.8 kg.cm@8.4V
Speed
0.18sec/60°@3.8V
0.15sec/60°@6.0V
0.09sec/60°@8.4V
Working Frequency
1520us/20KHz
Default Travel Angle
±60° = 120° Total
Temperature Range
-10?……+65?
Soft Start
Yes
Programable
Yes
Case Material
Aluminum Alloy
Motor Type
Coreless DC Motor
Gear Set Material
Hardened Steel
Position Sensor
Potentiometer
Case Dimensions
23.5mm x 8mm x 16.8mm±0.2mm
Weight
8g±10%

Available from:

KST X08H PLUS V2 wing servo

Features
•    Slim 8 mm body
•    Compact and light weight design
•    Good torque and speed
•    Metal gears
•    Designed for high performance RC Gliders, pylon racers and EDF applications
Product Information
 
The KST X08H Plus V2 is a version of the KST X08 Plus servo with horizontal mounting lugs (also called mounting tabs), making it suitable for use in thin wings and other flying surfaces. The KST X08H Plus V2 is a very light (9.5 g) wide voltage, metal cased, metal-geared servo. It is based on the well regarded KST X08H V5 servo but with a larger motor fitted.
It is especially good for ailerons on F5J & F3J 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 X08H Plus V2 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 gear train machining tolerances, and this servo is completely slop free, and equal to products costing twice as much. This servo has metal gears and is very resilient to impact with terra firma.
The KST X08H Plus's high torque, good speed, and 8mm thinness make it suitable for many high-performance gliders, pylon racers and EDF applications. With up to 5.3 kg.cm torque the KST X08 is appropriate for F5J, F5D, F3J and many other types of high-performance models.
 
Specs
Body dimensions
23.5 mm wide x 8.0 mm thick x 17.0 mm high
Max dimensions
29.5 mm wide x 8.0 mm thick x 31.0 mm high
Stall torque / Speed @ 3.8V
2.4 kg.cm / 0.18 s/60°
Stall torque / Speed @ 6V
3.9 kg.cm / 0.15 s/60°
Stall torque / Speed @ 8.4V
5.3 kg.cm / 0.09 s/60°
Weight
9.5 g
Lead length
10 cm
Operating Voltage
3.5V - 8.4V
Bearings
2 ball bearings
Gear material
Aluminium alloy / copper-bronze alloy
Case material
Aluminium alloy
Motor type
Coreless DC motor
Working frequency
333 Hz
Dead band/resolution
2 µs
Pulse width for ± 60º
900 - 2100 µs
Programmable
No
Position sensor
Potentiometer
Operating temperature
-20 to +65 ºC
Supplied accessories
3 plastic output arms, 1 arm retaining screw, 4 mounting screws

Available from:

Thats all from the Thermal Circle.Hayden Daley 2023