Answers.Body: <p>There's also this old piece that is not a full 1L offset</p>
  
  <p><a href="https://i.sstatic.net/YkoMP.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/YkoMP.png" alt="Technic Engine Crankshaft"></a></p>
  
  <p><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=2853#T=P" rel="nofollow noreferrer">https://www.bricklink.com/v2/catalog/catalogitem.page?P=2853#T=P</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-04-22T20:32:04.400Z
Answers.LastActivityDate: 2019-04-22T20:32:04.400Z
Answers.UserDisplayName: Craig
Answers.Body: <p>I assume you mean L when you say units?</p>
  
  <p>Well anyhow, unless I'm misunderstanding, I would try these: <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=6575" rel="nofollow noreferrer">https://www.bricklink.com/v2/catalog/catalogitem.page?P=6575</a></p>
  
  <p>You can stack 3 of them up to get 1 and a half L</p>
  
  <p>If you mean 3L long instead of 3L wide, this should still work because it has axle holes which is 1.5L apart, it also has axle holes that are 3L apart.</p>
  
  <p>Search youtube/eurobricks for 'technic mini engine' / 'technic micro engine' for some ideas.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-04-24T13:32:52.030Z
Answers.Text: Definitely the part for the job
Answers.UserDisplayName: Joubarc
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-04-19T22:23:06.630Z
Answers.LastActivityDate: 2020-06-01T09:01:02.923Z
Answers.LastEditDate: 2020-06-01T09:01:02.923Z
Answers.UserDisplayName: TechnicTechnician
Body: <p>This is aimed at building a GBC module, not to reproduce an actual engine.</p>
  
  <p>I need a piston type construction with stroke length of 3 units, which means a crankshaft radius of 1 1/2 units. Are there any existing LEGO Technic parts that will support this?</p>
  
  <p>Edit:
  TechnicTechnician provided the answer - the technic cam (6575) proved to be exactly what I needed. In case my original question wasn't totally clear I've added a picture of the solution below.</p>
  
  <p><a href="https://i.sstatic.net/blaae.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/blaae.jpg" alt="enter image description here"></a></p>
  
  <p>The distance between the two crank axles is 1½L, which means that the other end of the connecting rod (point X) will move a total of 3L as the crank rotates.</p>
  
Tags: <technic><size>
Title: Any (small) Lego Technic parts not in whole units?
UserDisplayName: Peregrine
ThreadText: # Any (small) Lego Technic parts not in whole units?
  
  (Asked by: username_0 on 2019-04-19)
  
  This is aimed at building a GBC module, not to reproduce an actual engine.
  
  I need a piston type construction with stroke length of 3 units, which means a crankshaft radius of 1 1/2 units. Are there any existing LEGO Technic parts that will support this?
  
  Edit:
  username_2 provided the answer - the technic cam (6575) proved to be exactly what I needed. In case my original question wasn't totally clear I've added a picture of the solution below.
  
  [![enter image description here](https://i.sstatic.net/blaae.jpg)](https://i.sstatic.net/blaae.jpg)
  
  The distance between the two crank axles is 1½L, which means that the other end of the connecting rod (point X) will move a total of 3L as the crank rotates.
  
  **Tags:** technic, size
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2019-04-19. Score: 7 | Accepted answer
  
  I assume you mean L when you say units?
  
  Well anyhow, unless I'm misunderstanding, I would try these: <https://www.bricklink.com/v2/catalog/catalogitem.page?P=6575>
  
  You can stack 3 of them up to get 1 and a half L
  
  If you mean 3L long instead of 3L wide, this should still work because it has axle holes which is 1.5L apart, it also has axle holes that are 3L apart.
  
  Search youtube/eurobricks for 'technic mini engine' / 'technic micro engine' for some ideas.
  
  > **Comments:**
  > **username_3**: Definitely the part for the job  
  
  ---
  
  ### Answer by username_1 on 2019-04-22. Score: 2
  
  There's also this old piece that is not a full 1L offset
  
  [![Technic Engine Crankshaft](https://i.sstatic.net/YkoMP.png)](https://i.sstatic.net/YkoMP.png)
  
  <https://www.bricklink.com/v2/catalog/catalogitem.page?P=2853#T=P>
  
  
  ---
  
  