Ripmax QZ501

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Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	P-QZ501
Category	Hobby
Performance
Torque	6.0V 129.87 oz-in 4.8V 120.15 oz-in Below Average
Speed	6.0V 0.13 sec/60° 4.8V 0.15 sec/60° Average
Physical
Weight	2.19 ozAverage
Dimensions	L 1.59 in W 0.80 in H 1.50 in
Case Material	Plastic
Drivetrain
Motor Type	Brushed
Gears	Aluminum
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Pulse Cycle	3.03 ms
Neutral Position	1520 µs
Refresh Rate	330 Hz
Electrical & Environment
Operating Voltage	4.8–6 V
Origin
Country of Origin	England

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 23% of 1043 Digital Standard servos at 4.8V
Speed	Average Faster than 39% of 1041 Digital Standard servos at 4.8V
Weight	Average Lighter than 52% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	1.48–1.85 W
Power Density	0.968 W/in³ More power-dense than 17% of 1759 Digital Standard servos
Torque Density	1.9379 oz-in/g Stronger than 20% of 1036 Digital Standard servos
Torque-to-Volume Ratio	62.97 oz-in/in³ Denser torque than 22% of 1042 Digital Standard servos
Speed-to-Weight	0.10753 (1/sec·g) Faster than 43% of 1033 Digital Standard servos
Speed-Torque Trade-off	18.02 Better balanced than 32% of 1031 Digital Standard servos
Torque Gain per Volt	6.74%/V More voltage-responsive (torque) than 7% of 850 Digital Standard servos
Speed Gain per Volt	12.81%/V More voltage-responsive (speed) than 34% of 871 Digital Standard servos
Voltage Range Width	1.2 V Wider voltage range than 11% of 1539 Digital Standard servos