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Hitec HS-635HB
Standard Discontinued

Hitec HS-635HB

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-09-14
Identity
Brand Hitec
Product Number 33635S
Category Hobby
Discontinued Yes
Performance
Torque
6.0V 83.00 oz-in
4.8V 69.00 oz-in Average
Speed
6.0V 0.15 sec/60°
4.8V 0.18 sec/60° Average
Running Current
6.0V 0.500 A
4.8V 0.400 A Below Average
Stall Current 2–2.5 ABelow Average
Physical
Weight 1.76 ozAverage
Dimensions L 1.59 in
W 0.77 in
H 1.52 in
Drivetrain
Motor Type 3-pole
Motor Drive MOS
Gears Plastic
Gear Spline/Teeth 24 T
Shaft Size 5.8 mm
Rotation Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Modulation Analog
Direction Clockwise
Rotational Range 80°
Pulse Cycle 20 ms
Pulse Width 900-2100 µs
Neutral Position 1500 µs
Dead Band 5 µs
Angle Sensor Potentiometer
Control System PWM
Programmable No
Electrical & Environment
Operating Voltage 4.8–6 V
Temperature -20–60 °C
Idle Current 0.008 A
Connectivity
Connector S
Wire Length 300 mm

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Class Comparison

TorqueAverage
Stronger than 40% of 192 Analog Standard servos at 4.8V
SpeedAverage
Faster than 59% of 190 Analog Standard servos at 4.8V
WeightAverage
Lighter than 45% of 448 Analog Standard servos
Running CurrentBelow Average
Lower draw than 29% of 50 Analog Standard servos at 4.8V
Stall CurrentBelow Average
Lower draw than 17% of 64 Analog Standard servos

Performance Analysis

Shaft Power 0.71–1.02 W
Power Density0.550 W/in³
More power-dense than 46% of 437 Analog Standard servos
Torque Density1.3828 oz-in/g
Stronger than 36% of 192 Analog Standard servos
Torque-to-Volume Ratio37.08 oz-in/in³
Denser torque than 41% of 192 Analog Standard servos
Speed-to-Weight0.11133 (1/sec·g)
Faster than 46% of 190 Analog Standard servos
Speed-Torque Trade-off12.42
Better balanced than 43% of 190 Analog Standard servos
Current-per-Torque Ratio0.0362 A/oz-in
More efficient than 7% of 58 Analog Standard servos
Idle-to-Running Current Ratio0.020
Lower idle draw than 87% of 39 Analog Standard servos
No-Load vs Stall Current Spread6.25
Narrower current spread than 61% of 37 Analog Standard servos
Torque Gain per Volt16.91%/V
More voltage-responsive (torque) than 59% of 145 Analog Standard servos
Speed Gain per Volt16.68%/V
More voltage-responsive (speed) than 60% of 147 Analog Standard servos
Voltage Range Width1.2 V
Wider voltage range than 57% of 229 Analog Standard servos
Dead-Band-to-Pulse-Width Ratio0.0042
Finer dead band than 35% of 49 Analog Standard servos

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Reviews (1)

  • Thomas

    December 8, 2010

    Application(s): 30 Size Nitro

    Comments: 5 stars for price and performance.
    Got the extra torque that you need.
    Been using it on my caliber 3's tail.
    Got the torque but not the speed for the tail though.
    Have had 100 + flights and works great.
    Has got Carbonite gears , so wear and tear on gear train is minimal.

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