Robbe FS 70 MG

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-10-24

Identity
Brand
Product Number	8455
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 46.70 oz-in 4.8V 38.20 oz-in Top 10%
Speed	6.0V 0.13 sec/60° 4.8V 0.16 sec/60° Below Average
Physical
Weight	0.71 ozBottom 10%
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	Top 10% Stronger than 99% of 160 Analog Micro servos at 4.8V
Speed	Below Average Faster than 11% of 160 Analog Micro servos at 4.8V
Weight	Bottom 10% Lighter than 2% of 336 Analog Micro servos

Performance Analysis

Shaft Power	0.44–0.66 W
Power Density	1.194 W/in³ More power-dense than 77% of 322 Analog Micro servos
Torque Density	1.9100 oz-in/g Stronger than 37% of 160 Analog Micro servos
Torque-to-Volume Ratio	68.69 oz-in/in³ Denser torque than 85% of 160 Analog Micro servos
Speed-to-Weight	0.31250 (1/sec·g) Faster than 1% of 160 Analog Micro servos
Speed-Torque Trade-off	6.11 Better balanced than 97% of 159 Analog Micro servos
Torque Gain per Volt	18.54%/V More voltage-responsive (torque) than 68% of 101 Analog Micro servos
Speed Gain per Volt	19.22%/V More voltage-responsive (speed) than 75% of 101 Analog Micro servos
Voltage Range Width	1.2 V Wider voltage range than 69% of 174 Analog Micro servos