23-07-2024, 08:55 PM
On some of the DK series of distributor One of the springs is intentionally loose and only governs advance above a certain RPM..... two stage if you like. There are some very good Lucas instructional booklets written for their trainees which explain all of this very well and are worth searching out and reading. They were available on line a few years ago but I don't know if they still are.
Black Art Enthusiast