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HPI Racing SS-40WP
Standard Discontinued

HPI Racing SS-40WP

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23
Identity
Brand HPI Racing
Product Number 110650
Category Hobby
Discontinued Yes
Performance
Torque
6.0V 138.90 oz-in
4.8V 97.23 oz-in Below Average
Speed
6.0V 0.11 sec/60°
4.8V 0.13 sec/60° Average
Physical
Weight 2.12 ozAverage
Dimensions L 1.646 in
W 0.795 in
H 1.496 in
Case Material Plastic
Drivetrain
Gears Metal
Gear Spline/Teeth 25 T
Control & Signal
Modulation Digital
Rotational Range 120°
Electrical & Environment
Operating Voltage 4.8–6 V
Water Rating Waterproof
Origin
Country of Origin England

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.

Class Comparison

TorqueBelow Average
Stronger than 17% of 1060 Digital Standard servos at 4.8V
SpeedAverage
Faster than 57% of 1045 Digital Standard servos at 4.8V
WeightAverage
Lighter than 61% of 1880 Digital Standard servos

Performance Analysis

Shaft Power 1.38–2.33 W
Power Density1.193 W/in³
More power-dense than 24% of 1768 Digital Standard servos
Torque Density1.6205 oz-in/g
Stronger than 13% of 1053 Digital Standard servos
Torque-to-Volume Ratio49.67 oz-in/in³
Denser torque than 14% of 1058 Digital Standard servos
Speed-to-Weight0.12821 (1/sec·g)
Faster than 61% of 1038 Digital Standard servos
Speed-Torque Trade-off12.64
Better balanced than 19% of 1034 Digital Standard servos
Torque Gain per Volt35.71%/V
More voltage-responsive (torque) than 97% of 873 Digital Standard servos
Speed Gain per Volt15.17%/V
More voltage-responsive (speed) than 48% of 874 Digital Standard servos
Voltage Range Width1.2 V
Wider voltage range than 10% of 1560 Digital Standard servos

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Reviews (2)

Includes 2 reviews aggregated from around the web.

There are very few reviews for this servo on the web. One Australian retailer customer gave it 5 out of 5, and a Reddit Savage XS owner who found his stock steering servo underpowered considered it as an upgrade.

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