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Thursday, November 7, 2019

CV Joints

Lego models of constant velocity universal joints

Dennis came across some new designs for constant velocity (CV) universal joints. He was intrigued so he made some models out of Legos. CV joints are commonly used with the driveshafts in front wheel drive cars. They have a complicated geometry, are machined to precise standards and used to be fairly expensive. With the advent of computer numeric control machining, and the increased production volume the price has come down. Still, they are a bit tricky, tricky enough that people have been working on alternate designs. These two models are a little simpler, after all they were built using Legos, but the number of links and pivot points mean they are unlikely to become competitors to the fancy ones that are currently used.

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