IGNITION COIL

The ignition coil converts normal current to high-tension current. It is essentially a several-metre-long winding of conducting wire meant to deliver high-tension current to the spark-plug with minimal losses. Older two-stroke engines ran ignition timing based on crankshaft rotation, whereas fourstroke bikes have it based on camshaft rotation. However, more modern bikes have done away with these systems and now have the high-tension coil in the spark-plug wiring itself. This makes the system rely entirely on electronic control.