Servos are powered by the ESC's output to the receiver. If you're using a higher-strength servo than the ESC can support (usually greater than 20kg), you may experience 'brown-outs' where the radio signal can be interrupted and cause erratic driving. This can be helped by plugging a Glitch Buster into the receiver smoothing the current delivery. However, in some cases, you may need to install an external BEC.

Released by Power HD is the new S15-X designed exclusively for the XRAY X4. It includes an integrated mount and reverse receiver wire output for smarter wiring placement. The S15-X retains the superior performance of Power HD high-end servos and allows programming with the Power HD Multifunction LCD Servo Program Box to perfect parameters for ultimate performance!

• 8.4v High High-Voltage

• Low Profile size & weight

• Metal geared

• Designed for the XRAY X4 and includes an integrated mount

In this video, Hamish gives a step-by-step guide on installing a Servo and how to avoid stripping your servo gears.

• Torque(6.0V): 11.5 kg-cm (159.7 oz/in)

• Torque(7.4V): 15.0 kg-cm (208.3 oz/in)

• Torque(8.4V): 16.5 kg-cm (229.1 oz/in)

• Speed(6.0V): 0.072 sec

• Speed(7.4V): 0.060 sec

• Speed(8.4V): 0.050 sec

• Operating Voltage: 6.0 ~ 8.4 DC Volts

• Weight: 56.5g (2.0oz)

• Bearing Type: Ball Bearing x 2

• Motor Type: Brushless Motor

• Gear Type: Titanium & Steel

• Operating Temperature: -20?~60?

• Working Frequency: 1520?s / 333hz

• Dimensions: 41.0x20.0x26.0mm (1.61x0.79x1.02")