SRT 815S 1:10 On-Road HV Brushless Servo

The SRT 815S 1:10 On-Road HV Brushless Servo (SCH-SRTBH815S) delivers fast response and strong holding power in a standard-size case. With speeds down to 0.045s/60° at 8.4V and stall torque up to 15.0kg.cm, it suits demanding on-road and buggy applications. A CNC-machined aluminium case aids cooling, while a dual ball bearing, metal gear train and precise 2 µsec dead band support consistent, repeatable control.

Operating from 6.0–8.4V, this digital brushless servo supports SR, SSR, SFR, SUR and SXR ultra high speed modes and uses pulse width control at 1520 µs/330 Hz. Its standard dimensions help ensure straightforward installation across many 1:10 platforms.

Key Features

• Unique mechanic design with incredible efficiency and low power consumption


• Standard dimensions for broad vehicle fitment


• CNC machined aluminium case for exceptional cooling


• Supports SR, SSR, SFR, SUR, SXR ultra high speed modes


• 2 µsec dead band for precise centring


• Superior holding torque


• 1-Year Limited Warranty

Product Specifications

• Type: Digital


• Bearing: Dual


• Motor Type: Brushless


• Gear Type: Metal


• Material: Titanium & Aluminium


• Control System: Pulse width control


• Working Frequency: 1520 µs / 330 Hz


• Operating Voltage: DC 6.0–8.4V


• Operating Temperature Range: -10 to +60 °C


• Operating Speed (6.0V): 0.065 sec/60° (no load)


• Operating Speed (7.4V): 0.055 sec/60° (no load)


• Operating Speed (8.4V): 0.045 sec/60° (no load)


• Stall Torque (6.0V): 10.0 kg.cm (138.8 oz/in)


• Stall Torque (7.4V): 13.0 kg.cm (180.5 oz/in)


• Stall Torque (8.4V): 15.0 kg.cm (208.3 oz/in)


• Potentiometer Drive: Direct drive


• Dimensions: 41.0×20.0×26.4 mm (1.61×0.79×1.04 in)


• Weight: 52.0 g (1.83 oz)


• Connector Wire Length: JR 180 mm

Suggested Compatibility

• 1/10 Electric Touring


• 1/10 2WD Electric Buggy


• 1/8 Electric GP


• 1/10 Nitro Touring


• Formula One