1/10 Touring ESC Capacitor for RPX4 - Yokomo BL-RPX4C  [BL-RPX4C]

RPX4 capacitor function explained

The Yokomo BL-RPX4C replacement capacitor is fitted to RPX4 series electronic speed controllers to smooth supply voltage and filter short transient noise. Over time electrolytic parts can lose capacitance or show physical wear, which reduces voltage stability and may make the ESC respond sluggishly.

Practical notes for installation and upkeep:

• Function: Soldered across the main power input, the cap evens voltage spikes and suppresses interference that can upset motor control and telemetry.
• Compatibility: Designed for RPX4 ESCs and suitable for common 1/10 scale touring and universal chassis installations.
• Replacement cues: Replace the cap if you spot bulging, leakage, burn marks, or if ESC performance worsens after extended use.
• Fitting tips: Observe polarity, keep leads short and neat to reduce stray inductance, and match the original capacitance and voltage rating when sourcing a new unit.
• Maintenance: Check mounting points and wiring for corrosion, loose joints, or heat damage during routine ESC servicing.