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- HS-81 Servo
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The Hitec HS-81 servo is a popular micro servo for small model aeroplanes and other RC models offering a great balance of speed and torque. Probably most widely used servo for the Multiplex TwinStar and the EasyStar, the HS-81 is a great all-round micro-servo.

The HS-81 weighs 16.6 grams (0.58 oz)

For full servo specifications, please refer to the specification tab above. A list of similar servos is also shown, where available, and is based on torque values only. All of our servos include standard manufacturers fittings.

Please note, as we buy our servos in bulk, many of the analogue Hitec servos are shipped to us packed like this, individual servos may therefore arrive loose-packed. Please do not grab and rotate servo arms by hand – this is not good for the gears and with todays light-weight servos can easily strip gears. A servo tester is a worthwhile investment.

Servos similar to the HS-81 Servo

	Torque in kg·cm
Servo	4.8V	6.0V	7.4V	Weight	Price	Stock
HS-81 Servo (This one)	2.60	3.00	-	16.4g	$8.75
HS-311 Standard Economy Servo	3.00	3.70	-	43.0g	$5.83
TowerPro MG92B Digital 13.8g Mini Servo	3.10	3.50	-	14.0g	$6.25
HS-322 HD Servo	3.00	3.70	-	43.0g	$8.29
HS-82MG Servo	2.80	3.40	-	18.7g	$12.46
HS-85MG Servo	3.00	3.50	-	21.8g	$18.17
HS-125MG Thin Wing Servo	3.00	3.50	-	23.8g	$19.58
HS-5125MG Slim Metal Gear Wing Servo	3.00	3.50	-	24.0g	$24.96

Technical Details for HS-81 Servo

Torque @ 4.8V (kg·cm)	2.6
Torque @ 6.0V (kg·cm)	3.0
Torque @ 7.4V (kg·cm)
Speed	0.11/0.09 sec @ 60°
Bearing Type	None
Motor Type	3 Pole
Dimensions (mm)	29.8x29.6x12.0
Weight	16.4g (0.6oz.)