Computing train value of planetary gear

Thread starter lucfuture
Start date Dec 10, 2012
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Computing Gear Planetary Train Value

AI Thread Summary

The discussion centers on calculating the efficiency (e) of a planetary gear system using two equations. The first equation relates the product of the number of driving teeth to the product of the driven teeth. The user has calculated an efficiency value of 1.25926 but notes that the expected value is 0.7941. The main challenge is to determine the correct efficiency value for the system. Clarification on the equations and values used is needed to resolve the discrepancy.

Dec 10, 2012

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.

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Dec 10, 2012

lucfuture

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