Planetary Gear Power Flows

Question 1

Maximum forward reduction

Answer 1

Sun gear input
Ring gear held
Carrier output

Question 2

Minimum forward reduction

Answer 2

Ring gear input
Sun gear held
Carrier output

Question 3

Maximum forward overdrive
(Decreased torque, increased speed)

Answer 3

Carrier input
Ring gear held
Sun gear output

Question 4

Minimum forward overdrive

Answer 4

Carrier input
Sun gear held
Ring gear output

Question 5

Reverse reduction or under drive

Answer 5

Sun gear input
Carrier held
Ring gear output

Question 6

Reverse overdrive

Answer 6

Ring gear input
Carrier held
Sun gear out put