In Reply to: 8N front mount distributor timing posted by Brian on September 27, 2021 at 17:11:13:
How does the timing advance with the counterweights?
Centrifugal force with an increase in engine RPM.
As the dist spins, the weights move out while the breaker plate that the points are mounted on rotates on the center shaft increasing the timing.
When the engine slows down the weights return to a retracted position and timing reduces also.
Setting base timing should be down at a slow RPM to ensure the weights are not advancing and creating a false setting.
Counter weights inside the dist might also have springs to assist the return to the base setting at a slower RPM.
All of this is inside the distributor and the outer distributor housing does not need to move to get this done.