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I have a motor and some other components that move a machine vertically on the ground. Inside the machine I need to raise a part by 5 cm, up and down.

Are there some common patterns that can move objects vertically (lift) using LEGO Technic? Torque comes from a motor powering gears.

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  • It seems from your question that you want to convert a continuous circular motion from the motor into an up and down motion with a range of 5cm - is that correct?
    – 62Bricks
    Commented Jul 26, 2013 at 16:43

2 Answers 2

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You can use a mechanism like this:

Piston

This is a mechanism that converts circular motion into reciprocating motion. You may need to alter the design for your needs regarding height difference, stability etc.

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You can accomplish this using gear racks (3743):

enter image description here

You just have to create some type of channel that allows the rack to slide vertically, and then set up a gear to mesh with the rack. You can do this however you like, but here's a quick example that I built to show you what I mean:

enter image description here

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    if only the gear racks weren't so hard to come across!
    – ACarter
    Commented Sep 9, 2013 at 15:12
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    Indeed. They're fairly affordable on Bricklink, though: bricklink.com/search.asp?colorID=86&itemID=697
    – jncraton ♦
    Commented Sep 9, 2013 at 19:20
  • The gear racks were quite common on the early Technic cars with steering.
    – awe
    Commented Aug 26, 2014 at 10:55

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