Small Block Distributor Recommendation
The primary spring is shorter and weaker. The secondary spring has loop to delay engagement.
The design geometry applies the spring force with increasing effect as rpm goes up and the weights go out. It also can tolerate two different springs and not have balance or wear issues.
You can see the two stage effect in the factory timing specs.
It's in the springs and the design.
The primary spring is shorter and weaker. The secondary spring has loop to delay engagement.
The design geometry applies the spring force with increasing effect as rpm goes up and the weights go out. It also can tolerate two different springs and not have balance or wear issues.
You can see the two stage effect in the factory timing specs.