Boyer ignition problem

Posted by ukpco on Apr 30, 2020; 2:41pm
URL: http://silk-motorcycles.221.s1.nabble.com/Boyer-ignition-problem-tp5001882.html

Hello all
I have a frustrating problem with the (Norton type) Boyer ignition system on my Silk.
When I rev the engine the timing retards rather than advancing. The system has been back to Boyer who have tested it and say it's fine.
I've tried switching the sensor wires and disconnecting the electronic rev counter in case it was causing interference but without success.
Any ideas?