Yokomo BL-RPX4C Electrolytic ESC Capacitor for 1/10 Chassis  [BL-RPX4C]

Overview of RPX4 ESC power smoothing

The Yokomo BL-RPX4C capacitor mounts on RPX4 series ESCs to stabilise input voltage and filter transient electrical noise. Over time electrolytic capacitors can degrade, which reduces smoothing and may affect throttle smoothness.

Practical notes for installation and upkeep:

• Function: Positioned across the main power lines, the cap reduces spikes and suppresses noise that can interfere with motor control and radio systems.
• Compatibility: Made for RPX4 controllers and fits typical 1/10 scale touring and universal chassis arrangements.
• Replacement cues: Swap when you see bulging, leaking electrolyte, scorch marks, or when ESC behaviour deteriorates after extended service life.
• Fitting tips: Double check polarity, route and shorten leads to keep stray inductance low, and replace with matching capacitance and voltage values.
• Maintenance: During scheduled servicing inspect the cap, mounting point and solder joints for corrosion, looseness or heat damage.