Robbe FS 75 MG

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28

Identity
Brand
Product Number	8458
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 45.80 oz-in 4.8V 37.50 oz-in Below Average
Speed	6.0V 0.13 sec/60° 4.8V 0.16 sec/60° Below Average
Physical
Weight	0.71 ozAbove Average
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	Digital
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	Below Average Stronger than 20% of 290 Digital Mini servos at 4.8V
Speed	Below Average Faster than 18% of 293 Digital Mini servos at 4.8V
Weight	Above Average Lighter than 76% of 505 Digital Mini servos

Performance Analysis

Shaft Power	0.43–0.65 W
Power Density	1.171 W/in³ More power-dense than 28% of 482 Digital Mini servos
Torque Density	1.8750 oz-in/g Stronger than 29% of 286 Digital Mini servos
Torque-to-Volume Ratio	67.43 oz-in/in³ Denser torque than 43% of 288 Digital Mini servos
Speed-to-Weight	0.31250 (1/sec·g) Faster than 47% of 289 Digital Mini servos
Speed-Torque Trade-off	6.00 Better balanced than 40% of 288 Digital Mini servos
Torque Gain per Volt	18.44%/V More voltage-responsive (torque) than 62% of 257 Digital Mini servos
Speed Gain per Volt	19.22%/V More voltage-responsive (speed) than 70% of 262 Digital Mini servos
Voltage Range Width	1.2 V Wider voltage range than 28% of 405 Digital Mini servos