Electronic ignition mounted on a Honda CB125
Removing the ignition cover
A sensor Hall is replacing the switches. I use the original blue/yellow wires. The centrifugal correction remains original.
The hall sensor with the hand-made cam.
Cam with minimum (latest and still) position. The motor spins clockwise.
Cam with maximum (earliest) position. The motor spins clockwise.
- The ignition coil is taken from a Megane. It is a wasted spark ignition system : 1 coil for 2 cylinders and a spark also during exhaust time.
The messy wiring into position, under the tank
The “master switch” : a NPN transisor 2N3055+heat exchg. (kind of oversized, but I won’t stay get stucked in the middle of nowhere for 2 euros…)