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## Homework Statement

The teacher said it is possible to use an epicyclic gearing with no axis fixed but nobody use the gearing like that. I watched this video:

at time 42s it's possible to watch it. I have 2 questions:

1) Is it possible to used the epicycloidal train with no axis fixed ?

2) If yes, what is the ratio of reduction ? is it dependant of the torque ?

Maybe if you have a link ?

## Homework Equations

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## The Attempt at a Solution

I'm looking for this case, but each time the epicyclic gearing is used with one fixed axis.

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