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Automatic Transmission Model by emmett #3dthursday

Emmett, who has long been one of my favorite designers on Thingiverse — along with Tony Buser and Michael Curry — has really outdone himself here: a working demonstration model of an automatic transmission! This video has to be seen to be believed.

A number of friends from the printing world have been dropping me notes this past week eager for a chance to print out this model for themselves — I’m hoping we’ll band together so I don’t have to print all of these parts on my own!

From Emmett Lalish’s project notes:

Have you ever wondered how an automatic transmission works? I did, so I looked it up and then designed this desktop model. It has six forward speeds and one reverse. Real automatic transmissions have a hydraulic or electrical system that engages different clutches and brakes to shift gears depending on the driving situation. With this model you control those simplified brakes and clutches yourself.

The clutch is actuated by sliding the drive shaft through to different positions (which each have two gear markings), while three separate brakes each also have two gear markings. You select a gear by engaging the brake and clutch position associated with your desired gear.

Read more.

TransmissionComplete

TransmissionSideview


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