RCEXL 3W Twin Cylinder Ignition – 90° CM-6 / 10mm Spark Plug Cap (14mm Hex)

Specifically designed for 3W twin-cylinder gas engines, the RCEXL Twin Cylinder Ignition system delivers dependable, high-performance spark control. Featuring 90° CM-6 / 10mm spark plug caps with a 9/16" (14mm hex) fit, it ensures secure plug contact and minimal electrical interference—ideal for high-vibration RC aircraft setups.

This CDI unit supports a wide operating voltage from 6V to 14.4V and includes Futaba female connectors for easy integration with standard battery and tachometer systems. It features an intelligent timing curve, with automatic retard at startup (20° BTDC) and dual-spark firing at low RPMs to enhance engine start-up and smoothness.

Specifications:

• Engine Compatibility: 3W Twin-Cylinder Gas Engines

• Spark Plug Type: CM-6 / 10mm (14mm Hex)

• Plug Cap Angle: 90 degrees

• CDI Unit Weight: 178g

• Working Voltage: 6V to 14.4V

• Connectors: Futaba Female (Battery & Tachometer)

• Recommended Static Timing: 30° BTDC

• Auto Retard Timing: 20° BTDC (100–2000 RPM)

• Timing Curve: Dynamic up to 4000 RPM, then fixed at 30° BTDC

• Start Assistance: Fires spark plug twice per cycle at low RPM for easier starts

Note:
BTDC = Before Top Dead Centre

Perfect for RC pilots using 3W twin-cylinder engines, this RCEXL ignition system delivers clean starts, stable mid-range operation, and consistent performance under high-load conditions.