DS225MG HV- Steel Gears, High Voltage High Torque Wing Servo
$ 34.99 $ 28.99
Updated Steel Gears
|KST DS225MG HV Specifications|
|Body dimensions||30.0 mm wide x 10.0 mm thick x 35.7 mm high||1.18″ wide x 0.39″ thick x 1.41″ high|
|Max dimensions||42.1 mm wide x 10.0 mm thick x 45.0 mm high||1.66″ wide x 0.39″ thick x 1.77″ high|
|Stall torque (6V)||4.7 kg.cm||65 oz.in|
|Stall torque (8.4V)||6.5 kg.cm||90 oz.in|
|Weight||26.6 g||0.94 oz|
|Lead length||20 cm||7.9 in|
|Operating speed (6V)||0.12 sec/60°|
|Operating speed (8.4V)||0.10 sec/60°|
|Operating voltage||6.0V to 8.4V|
|Bearings||2 ball bearings|
|Gear material||Aluminium alloy / copper-bronze alloy|
|Case material||CNC machined 6061 aluminium|
|Motor type||10 mm coreless DC motor|
|Working frequency||1520 µs / 333 Hz|
|Supplied accessories||1 metal output arm, 3 plastic output arms, 1 arm retaining screw, 2 mounting screws|
|Optional accessories||KST Metal Output Arm|
KST servos? I had to evaluate these servos for myself before I placed orders with KST. So I had my buddy Tuan the tech guy test them out and give some feedback. His findings-
Ok Ali, here are some of the numbers at 6.6v (LiFe):
The accuracy and consistency is not as good as the MKS, JR, Atx.
The deadband is not very consistent as each incremental movement requires either 2-3 micro seconds of signal. Kinda like the JR 378 before.
However, due to the pricing these may represent very good value for the sport flyer.
I ran these all on 6.6v and there were no issues, however under a constant load, these may be effected by the higher voltage, just not sure what the critical point of damage would be.
I also did not test torque yet, I need to pull out my test stand to get to that. Maybe tomorrow.
Let me know if you need more info.
Resolution usec/1 degree
|0-60 degrees||Slow current (A)||Fast Current||Stall Current||Remarks|
|.158||.442||.953||Movements not very smooth, accuracy is decent though not super consistent. Suspect feedback pot is not as accurate as MKS. Rating 1-10 have to say around 7 as MKS would be 9|
|.242||.613||1.036||Same as above|
Having coreless motor, the accuracy seems to be better than the other two KSTs I tested. I am running 6.6 so the current looks low, but this is a decent servo. Again the limiting factor to the servos performance is the pot. With a better pot, I would rate the servo a 8.5 due to value. This would be good for sport flyers.
|Servo||Specs @ 4.8v||Measured @ 4.8v||Specs @ 6.0v||Measured @ 6.6v|