KO Propo RSx4S-one10X

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-25

Identity
Brand
Product Number	30148
Category	Hobby
Performance
Torque	7.4V 173.63 oz-in 6.0V 163.90 oz-in Average
Speed	7.4V 0.09 sec/60° 6.0V 0.10 sec/60° Average
Physical
Weight	1.78 ozAverage
Dimensions	L 1.594 in W 1.024 in H 0.827 in
Case Material	Aluminum / Plastic
Drivetrain
Motor Type	Coreless
Gears	Aluminum
Rotation/Support	Dual Bearings
Control & Signal
Control System	HCS / PWM
Programmable	Yes
Electrical & Environment
Operating Voltage	6–7.4 V
Power Source	LiPo / LiFe / Ni-MH
Connectivity
Wire Length	180 mm
Origin
Country of Origin	Japan

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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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Average Stronger than 64% of 229 Low Profile servos at 6.0V
Speed	Average Faster than 52% of 227 Low Profile servos at 6.0V
Weight	Average Lighter than 46% of 414 Low Profile servos

Performance Analysis

Shaft Power	3.03–3.57 W
Power Density	2.643 W/in³ More power-dense than 82% of 112 KO Propo servos
Torque Density	3.2455 oz-in/g Stronger than 56% of 37 KO Propo servos
Torque-to-Volume Ratio	121.42 oz-in/in³ Denser torque than 58% of 37 KO Propo servos
Speed-to-Weight	0.19802 (1/sec·g) Faster than 56% of 37 KO Propo servos
Speed-Torque Trade-off	16.39 Better balanced than 56% of 37 KO Propo servos
Torque Gain per Volt	4.24%/V More voltage-responsive (torque) than 7% of 29 KO Propo servos
Speed Gain per Volt	7.94%/V More voltage-responsive (speed) than 21% of 29 KO Propo servos
Voltage Range Width	1.4 V 3rd-highest voltage range width of 38 KO Propo servos