Yokomo BL-RPX4C Replacement Power Capacitor for RPX4 ESC  [BL-RPX4C]

Yokomo BL-RPX4C Capacitor for RPX4
Price:
NZD$19.71
Brand:
Yokomo
Model:
BL-RPX4C
GTIN:
639342230884
Condition:
Brand New
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Why the RPX4 capacitor matters

The Yokomo BL-RPX4C serves as a power buffer on RPX4 series ESCs, reducing voltage ripple and transient spikes that can upset motor control. As electrolytic caps age they lose effectiveness, which can lead to less predictable throttle response.

Practical notes for installation and upkeep:

  • Function: Installed at the main input, the cap reduces peak voltages and suppresses electrical noise that may interfere with servo and ESC signals.
  • Compatibility: Intended for RPX4 controllers and generally fits popular 1/10 scale touring and universal chassis arrangements.
  • Replacement cues: Change the capacitor if it bulges, leaks electrolyte, overheats, or if you notice intermittent ESC issues.
  • Fitting tips: Confirm correct polarity, keep wiring tidy and short, and replace with the same capacitance and rated voltage for reliable operation.
  • Maintenance: During checks inspect solder joints, mounting hardware and nearby wiring for signs of wear or corrosion.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How can I tell if a cap has lost capacitance?

Measurable drop in capacitance needs a meter, but common signs include poorer throttle smoothness, more noise on radio telemetry, or visible casing changes.

Will fitting a higher value cap help performance?

Increasing capacitance can improve filtering but only if the voltage rating and physical fit are correct; stick to manufacturer recommended specs for safety.

How often should I include the cap in my ESC service checks?

Inspect the capacitor visually every few servicing cycles and replace it if you see wear, leakage, or after long term high load use to keep the ESC reliable.

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