Computing train value of planetary gear

[lucfuture]

Homework Equations

e=(product of number of driving teeth)/(product of number of driven teeth)

e=(n_{out}-n_{arm})/(n_{in}-n_{arm})

The Attempt at a Solution

e=(N_{p1}/N_{s1})*(N_{s2}/N_{p2})
e=1.25926

e should be 0.7941 however

From there out it seems pretty trivial. I just need to get the right e value.

 

[lucfuture]

Problem statement