200R4 Governor - 101 question

[Jerryl]

Ok, trans noob here.
Have a transmission 100 question.

How does the governor actually work to casue the trans to shift?
This is my understanding:
With RPM, the weights will “fly out” and active shift circuit (Or whatever it is called )

What I don’t understand is this;
The spring on the small weight already pushes the small weight all the way out.
So, how does it “fly out” even further with rpm to activate the shift?

 

[mikestertwo]

Ok, trans noob here.
Have a transmission 100 question.

How does the governor actually work to casue the trans to shift?
This is my understanding:
With RPM, the weights will “fly out” and active shift circuit (Or whatever it is called )

What I don’t understand is this;
The spring on the small weight already pushes the small weight all the way out.
So, how does it “fly out” even further with rpm to activate the shift?

The weights don't "fly out". They put pressure on the balls blocking the bleed holes in the governor. The faster the governor spins the more pressure it puts on the balls which are blocking a pressure bleed off passage going to the shift valves. This pressure moves the shift valves depending on driveshaft speed (vehicle speed).

 

[Jerryl]

The weights don't "fly out". They put pressure on the balls blocking the bleed holes in the governor. The faster the governor spins the more pressure it puts on the balls which are blocking a pressure bleed off passage going to the shift valves. This pressure moves the shift valves depending on driveshaft speed (vehicle speed).

Ahhh, got it!

When I used the noob "fly out" terminology, I was referring to the outward movement of the weights, as a result of the centrifugal force.
So, with a lighter weight, you need more RPM for the same force, which changes the shift RPM.

Excellent!
Thanks and happy TG!

 

[mikestertwo]

You got it. Have a good Thanksgiving.