|KST HS08B 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|
|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|
Review by: Marc PGood as ever!
Another batch of the little servos that can... full metal jacket, lots of torque and high voltage... perfect for my glider's needs.
Review by: John Barrow
I have previously fitted KST X08 plus servos to 2 models and was keen to try the new HS08 with its enclosed motor which has a larger diameter than that of the X08 but is 3mm shorter in overall height. I like the idea of a full enclosure unlike the xo8 with its exposed motor leads. The performance of the servos is excellent with good centering and resolution but like all the 08 series it is not very quiet but by now I am now used to the buzz from digital servos. All my KST servos have been used to power ailerons through a servorahmen IDS frame. I was concerned that the new HS08 would need a different IDS frame but mounting dimensions are all the same and the IDS frame can be used with the vertical or horizontal mounts.
The KST HS08 with its 8mm width is ideal for the latest F5J models many of which are using slim low profile aerofoils. As the servo delivers 5Kg+ torque it could also be used for flaps as well as ailerons.