19-06-2018, 12:51 PM
The 2 springs are usually one light and one strong.
The light spring is fully extended as soon as the engine fires the strong spring then takes over.
This retards the spark for easier starting and it immediately goes on to the spring for the correct advance curve.
That's my theory anyway.
The Ducellier distributor in my Citroen SM is the same. One light, one strong and static timing is a little AFTER TDC.
The light spring is fully extended as soon as the engine fires the strong spring then takes over.
This retards the spark for easier starting and it immediately goes on to the spring for the correct advance curve.
That's my theory anyway.
The Ducellier distributor in my Citroen SM is the same. One light, one strong and static timing is a little AFTER TDC.
Jim