Powerstar PL-8509HV

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Technical Specifications

Last Updated: 2026-10-24

Identity
Brand
Product Number	PL-8509HV
Category	Hobby
Performance
Torque	8.4V 145.80 oz-in 7.4V 131.90 oz-in 6.0V 118.00 oz-in 4.8V 97.20 oz-in Above Average
Speed	8.4V 0.08 sec/60° 7.4V 0.09 sec/60° 6.0V 0.10 sec/60° 4.8V 0.11 sec/60° Average
Physical
Weight	0.99 ozBelow Average
Dimensions	L 1.42 in W 0.60 in H 1.17 in
Drivetrain
Motor Type	Coreless
Gears	Copper
Control & Signal
Modulation	Digital
Neutral Position	1520 µs
Refresh Rate	333 Hz
Electrical & Environment
Operating Voltage	4.8–8.4 V
Temperature	-20–60 °C

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*Based on known specs.

Class Comparison

Torque	Above Average Stronger than 81% of 284 Digital Mini servos at 4.8V
Speed	Average Faster than 55% of 288 Digital Mini servos at 4.8V
Weight	Below Average Lighter than 35% of 490 Digital Mini servos

Performance Analysis

Shaft Power	1.71–3.37 W
Power Density	3.380 W/in³ More power-dense than 72% of 468 Digital Mini servos
Torque Density	3.4714 oz-in/g Stronger than 84% of 280 Digital Mini servos
Torque-to-Volume Ratio	97.51 oz-in/in³ Denser torque than 67% of 282 Digital Mini servos
Speed-to-Weight	0.34014 (1/sec·g) Faster than 52% of 284 Digital Mini servos
Speed-Torque Trade-off	10.21 Better balanced than 72% of 282 Digital Mini servos
Torque Gain per Volt	13.89%/V More voltage-responsive (torque) than 29% of 252 Digital Mini servos
Speed Gain per Volt	8.68%/V More voltage-responsive (speed) than 9% of 258 Digital Mini servos
Voltage Range Width	3.6 V Wider voltage range than 76% of 396 Digital Mini servos