- Joined
- Jul 5, 2020
- Messages
- 48

Hi All, I’m setting up my timing with a new Boyer Bransden MK3 electronic ignition system on my MKIII Commando. The instructions say it must be timed on the 31 degree BTDC mark up to 5000 rpm using a strobe lamp. If I set it at 5000 rpm on the 31 degree BTDC mark it sounds very rough. If I set it at 3000 rpm on the 31 deg mark it sounds just right. The more I rev it the more the timing retards and shifts a good 10 degrees through the rev range. There must be a sweet spot somewhere but has anyone had the same challange and how have you addressed it please? I have installed the rotor and the stator plate exactly to Boyer’s instructions while the static timing mark is positioned on the 31 degree BTDC mark. Plus, I’ve gone back and double checked that everything is set just right in accordance to their instructions. Any advice as to where exactly and at what rpm it should be calibrated would be gratefully received. Cheers!