Let's Make Robots!

Linear travel motor

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I had one of those before. They are the actuators from a car central locking kit. They are just a small gearbox with a rack and pinion output. They are splash proof and reasonably strong. Combined with a linear pot like the one in the photo they can make a good linear servo.

I gave one away as part of a prize pack when I moved to China. I think Gareth won this pack.