Robbe FS 70 MG

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28

Identity
Brand
Product Number	8455
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 50.70 oz-in 4.8V 38.20 oz-in Average
Speed	6.0V 0.13 sec/60° 4.8V 0.16 sec/60° Below Average
Physical
Weight	0.71 ozAverage
Dimensions	L 1.16 in W 0.47 in H 1.02 in
Drivetrain
Gears	Metal
Gear Spline/Teeth	25 T estimate
Rotation/Support	Bushing
Control & Signal
Modulation	Analog
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Connector	JR (Universal) estimate

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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

*Spec is estimated from brand data.

Class Comparison

Torque	Average Stronger than 61% of 80 Analog Mini servos at 4.8V
Speed	Below Average Faster than 26% of 81 Analog Mini servos at 4.8V
Weight	Average Lighter than 44% of 165 Analog Mini servos

Performance Analysis

Shaft Power	0.44–0.72 W
Power Density	1.297 W/in³ More power-dense than 81% of 163 Analog Mini servos
Torque Density	1.9100 oz-in/g Stronger than 48% of 80 Analog Mini servos
Torque-to-Volume Ratio	68.69 oz-in/in³ Denser torque than 84% of 80 Analog Mini servos
Speed-to-Weight	0.31250 (1/sec·g) Faster than 34% of 81 Analog Mini servos
Speed-Torque Trade-off	6.11 Better balanced than 68% of 80 Analog Mini servos
Torque Gain per Volt	27.27%/V 3rd-highest torque gain per volt of 55 Analog Mini servos
Speed Gain per Volt	19.22%/V More voltage-responsive (speed) than 78% of 56 Analog Mini servos
Voltage Range Width	1.2 V Wider voltage range than 61% of 88 Analog Mini servos