Answers.Body: <p>I built a walking machine when I was a kid several (<em>cough</em>) decades ago, and it had a similar problem. We finally figured out that what I had built was very front-heavy. Weight has to be balanced equally, forward and backward, over the "hips" of the creation. Pick up the creature by the top of the hips and see which way it swings. I solved the problem by adding a longer tail. You might also try putting the head up in a higher position or moving a battery case rearward.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-25T12:46:36.013Z
Answers.LastActivityDate: 2017-05-25T12:46:36.013Z
Answers.UserDisplayName: Aquarello
Body: <p>I'm building the standard T-Rex project from <a href="https://smile.amazon.com/LEGO-MINDSTORMS-EV3-Laboratory-Experiment/dp/1593275331" rel="nofollow noreferrer">Benedettelli's book</a>. </p>
  
  <p>We double checked construction and also step my block - all looks correct.</p>
  
  <p><img src="https://i.sstatic.net/iBgPv.jpg" alt="enter image description here"></p>
  
  <p>Any pointers appreciated.</p>
  
Tags: <ev3><robotic>
Title: EV3 T-Rex we build keeps toppling over on step
UserDisplayName: Suneri
ThreadText: # EV3 T-Rex we build keeps toppling over on step
  
  (Asked by: username_0 on 2017-05-24)
  
  I'm building the standard T-Rex project from [Benedettelli's book](https://smile.amazon.com/LEGO-MINDSTORMS-EV3-Laboratory-Experiment/dp/1593275331).
  
  We double checked construction and also step my block - all looks correct.
  
  ![enter image description here](https://i.sstatic.net/iBgPv.jpg)
  
  Any pointers appreciated.
  
  **Tags:** ev3, robotic
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2017-05-25. Score: 1
  
  I built a walking machine when I was a kid several (*cough*) decades ago, and it had a similar problem. We finally figured out that what I had built was very front-heavy. Weight has to be balanced equally, forward and backward, over the "hips" of the creation. Pick up the creature by the top of the hips and see which way it swings. I solved the problem by adding a longer tail. You might also try putting the head up in a higher position or moving a battery case rearward.
  
  
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