Answers.Body: <p>Here's one simple way to accomplish this using just basic parts:</p>
  
  <p><img src="https://i.sstatic.net/xxRYQ.jpg" alt="Simple piston"></p>
  
  <p>This isn't quite a pure Technic example, but that construction is almost exactly what was used on the steam cylinders on Emerald Night:</p>
  
  <p><img src="https://i.sstatic.net/7Hqja.png" alt="Emerald Night"></p>
  
  <p>Depending on exactly what you are trying to do, there are also some specialized parts that make building decorative pistons simple. For example, here's the V8 from the 8880 Super Car:</p>
  
  <p><img src="https://i.sstatic.net/Hi85c.jpg" alt="8880 V8"></p>
  
  <p>There's also the much earlier piston design on 853:</p>
  
  <p><img src="https://i.sstatic.net/pMDli.jpg" alt="853 Pistons"></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-07-24T12:06:25.977Z
Answers.LastActivityDate: 2013-07-24T12:06:25.977Z
Answers.UserDisplayName: jncraton
Body: <p>I'm not sure of the name of the pattern, feel free to edit the title if you have a better name for the pattern commonly used in engines. I was just wondering if anyone has built this specific pattern in LEGO Technic. The piston part is not important, I only need a flywheel that takes a crankshaft forward and backward repeatedly. Does anyone know some common patterns for this, with a large radius on the flywheel?</p>
  <p><img src="https://i.sstatic.net/ZM37k.jpg" alt="enter image description here" /></p>
  
Tags: <technic><building>
Title: How to build a flywheel slider crank piston pattern with LEGO Technic?
UserDisplayName: bogen
ThreadText: # How to build a flywheel slider crank piston pattern with LEGO Technic?
  
  (Asked by: username_0 on 2013-07-24)
  
  I'm not sure of the name of the pattern, feel free to edit the title if you have a better name for the pattern commonly used in engines. I was just wondering if anyone has built this specific pattern in LEGO Technic. The piston part is not important, I only need a flywheel that takes a crankshaft forward and backward repeatedly. Does anyone know some common patterns for this, with a large radius on the flywheel?
  
  ![enter image description here](https://i.sstatic.net/ZM37k.jpg)
  
  **Tags:** technic, building
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2013-07-24. Score: 6 | Accepted answer
  
  Here's one simple way to accomplish this using just basic parts:
  
  ![Simple piston](https://i.sstatic.net/xxRYQ.jpg)
  
  This isn't quite a pure Technic example, but that construction is almost exactly what was used on the steam cylinders on Emerald Night:
  
  ![Emerald Night](https://i.sstatic.net/7Hqja.png)
  
  Depending on exactly what you are trying to do, there are also some specialized parts that make building decorative pistons simple. For example, here's the V8 from the 8880 Super Car:
  
  ![8880 V8](https://i.sstatic.net/Hi85c.jpg)
  
  There's also the much earlier piston design on 853:
  
  ![853 Pistons](https://i.sstatic.net/pMDli.jpg)
  
  
  ---
  
  