Answers.Body: <p>The LEGO Digital Designer software does not have the ability to simulate the interaction of gears.</p>
  
  <p>There is a similar software program called <a href="http://sr3dbuilder.altervista.org/" rel="nofollow">SR 3D Builder</a> that does have this capability.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-10-09T19:16:17.720Z
Answers.Text: Thank you for the suggestion, I'll have to check out that program.
Answers.UserDisplayName: Jedi_Maseter_Sam
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-02-07T03:15:05.777Z
Answers.Text: None of the links there work: download, user manuals, forum. Is there any other location to download it from?
Answers.UserDisplayName: David
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-13T21:33:00.520Z
Answers.Text: The author of SR 3D Builder passed away in 2014, so the software and website has not been maintained since then. https://forums.ldraw.org/thread-15315-post-15315.html#pid15315
Answers.UserDisplayName: David Lechner
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-04-18T15:05:51.030Z
Answers.Text: @David You can download it from here http://www.download82.com/get/download/windows/sr-3d-builder/
Answers.UserDisplayName: musicinmusic
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-10-08T17:01:56.940Z
Answers.LastActivityDate: 2016-10-08T17:01:56.940Z
Answers.UserDisplayName: David Lechner
Answers.Body: <p>LDD is a design solution for static models. It is not a functional simulation tool. The gears turn with the crank handle if they are associated to the same group, but that is only because the gears, the axle and the handle share the same rotation point. The toothed bar does not share that same rotation point (and is likely not part of your "group" that contains the handle, axle and gears) and hence does not turn. If you made it part of the group, it would rotate around the center of the axle, which is not the effect you are looking for.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-10-07T19:56:40.367Z
Answers.Text: I have seen some videos where people get systems of gears to work, but that does not work when I try it either.  Is there specific mode that I need to use to get something like that to work
Answers.UserDisplayName: Jedi_Maseter_Sam
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-10-07T19:47:33.287Z
Answers.LastActivityDate: 2016-10-07T19:47:33.287Z
Answers.UserDisplayName: Phil B.
Body: <p>I just started using LDD, and I have been trying out a few things that I couldn't do with the limitations of my Lego collection.  One thing that has me caught up is that I can't seem to get the technic gears to interact with the Toothed Bar piece.  I know this is possible in real life, but I was wondering if it is possible to do on the computer.</p>
  
  <p>In the project I have, I want the lever to be turned and the platform attached to the Toothed Bars to go up or down.  Right now, only the gears on the axle spin when rotated.</p>
  
  <p><a href="https://i.sstatic.net/KooJl.png" rel="noreferrer"><img src="https://i.sstatic.net/KooJl.png" alt="example project"></a></p>
  
Tags: <technic><gears><ldd>
Title: Lego Digital Designer: Having Gears Interact with Toothed Bar
UserDisplayName: Jedi_Maseter_Sam
ThreadText: # Lego Digital Designer: Having Gears Interact with Toothed Bar
  
  (Asked by: username_0 on 2016-10-07)
  
  I just started using LDD, and I have been trying out a few things that I couldn't do with the limitations of my Lego collection. One thing that has me caught up is that I can't seem to get the technic gears to interact with the Toothed Bar piece. I know this is possible in real life, but I was wondering if it is possible to do on the computer.
  
  In the project I have, I want the lever to be turned and the platform attached to the Toothed Bars to go up or down. Right now, only the gears on the axle spin when rotated.
  
  [![example project](https://i.sstatic.net/KooJl.png)](https://i.sstatic.net/KooJl.png)
  
  **Tags:** technic, gears, ldd
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2016-10-08. Score: 4 | Accepted answer
  
  The LEGO Digital Designer software does not have the ability to simulate the interaction of gears.
  
  There is a similar software program called [SR 3D Builder](http://sr3dbuilder.altervista.org/) that does have this capability.
  
  > **Comments:**
  > **username_0**: Thank you for the suggestion, I'll have to check out that program.  
  > **username_2**: None of the links there work: download, user manuals, forum. Is there any other location to download it from?  
  > **username_1**: The author of SR 3D Builder passed away in 2014, so the software and website has not been maintained since then. https://forums.ldraw.org/thread-15315-post-15315.html#pid15315  
  > **username_3**: @username_2 You can download it from here http://www.download82.com/get/download/windows/sr-3d-builder/  
  
  ---
  
  ### Answer by username_4 on 2016-10-07. Score: 4
  
  LDD is a design solution for static models. It is not a functional simulation tool. The gears turn with the crank handle if they are associated to the same group, but that is only because the gears, the axle and the handle share the same rotation point. The toothed bar does not share that same rotation point (and is likely not part of your "group" that contains the handle, axle and gears) and hence does not turn. If you made it part of the group, it would rotate around the center of the axle, which is not the effect you are looking for.
  
  > **Comments:**
  > **username_0**: I have seen some videos where people get systems of gears to work, but that does not work when I try it either.  Is there specific mode that I need to use to get something like that to work  
  
  ---
  
  