£2.50

Gear Train

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This working gear train is ready for you to download and 3D print. The fun and interesting mechanism features a two stage gear train with each stage being a 41:11 speed change. The combined change is speed means that the small output pinion turns almost fourteen times as fast as the large forty one tooth gear. You can see see a video of the gear train in action on Instagram here.

geartrain-a01
The download contains stl files for the five parts – these files will be suitable for most 3D printers.

geartrain-a02

I’ve printed the parts using different colours of PLA to make a colourful model.

Once printed out, the parts fit together like this and should be free to rotate smoothly
geartrain-a03

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