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Mindstorms Flexible Track Vehicle
This vehicle uses a technique for steering that I've never used before, bending the new technic tracks to provide a curved surface on the ground!
About this creation
Link To Video






Front View





Side View





Rear View





Side 3/4





Front 3/4





Motor Arrangement - Two Rear Motors Are For Propulsion, The Front Is For Steering





Linear Auctuator Steering Setup





Shot Showing The Range Of The Steering





Shot Showing The Underside





And A Closing Rear 3/4!





Thanks For Looking! Now with Building Instructions! Download Below!






Building instructions
Download building instructions (LEGO Digital Designer)

Comments

 I made it 
  February 13, 2014
Quoting Family Vuurzoon Hi Thomas, Cool! Very innovative steering technology!
Thanks!
 I like it 
  December 30, 2013
Hi Thomas, Cool! Very innovative steering technology!
 I made it 
  July 23, 2013
Quoting David the Fire Ninja Jedi Nice!
Thanks
 I like it 
  July 23, 2013
Nice!
 I made it 
  July 19, 2013
Quoting Halhi 141 I agree that it looks hard on the pieces. The problem is the way that the linear actuators are attached at the end near the motor; they need a pivot point horizontally there in order to avoid stressing the pieces. Otherwise nicely done.
Again, thanks for the comment, and yeah, the linear Actuators only move 2-3mm each way (not in/out, but horizontally) because of this design, i can see how this would also reduce the life of the parts (i also think that it would be hard to put in pivot there, as it involves a longer, or more complex way of connecting the motor output). your feedback is really helpful, and i will try to build this into my next design (i have an idea which uses this track technique, but is a lot lighter to avoid as many stresses).
 I made it 
  July 19, 2013
Quoting Achintya Prasad Alright, well I watched the video (and subbed!), and the only thing that I see that might be problematic is that it appears that your linear actuators are really straining the interior skeleton. Mind, you, it doesn't appear to be too much of a problem, but over time it may wear down on parts. Its a great idea, and its beautifully built, and its managed very well, but I think that LEGO technic is simply not flexible enough to make this a very practical propulsion source. Once again, the idea is great, it looks great, it functions really well, but I don't know if Technic pins and axles could survive that kinda of strain in the long run.
True, very true, but the main amount of chassis stress (that i see) is from my inability to stop the motor at the exact limits of it's travel, although I'm sure there is also some stress in the actual tracks, as at points they bend in two dimensions at once, and bar in front of the Auctuators also comes under a lot of stress. i believe that i'd rather explore this method of steering and have a few parts break, than be kinda stuck in my usual loop of similar tanks! Also, thanks for the sub on my youtube, it takes the total to 10!
 I like it 
  July 18, 2013
I agree that it looks hard on the pieces. The problem is the way that the linear actuators are attached at the end near the motor; they need a pivot point horizontally there in order to avoid stressing the pieces. Otherwise nicely done.
 I like it 
  July 18, 2013
Alright, well I watched the video (and subbed!), and the only thing that I see that might be problematic is that it appears that your linear actuators are really straining the interior skeleton. Mind, you, it doesn't appear to be too much of a problem, but over time it may wear down on parts. Its a great idea, and its beautifully built, and its managed very well, but I think that LEGO technic is simply not flexible enough to make this a very practical propulsion source. Once again, the idea is great, it looks great, it functions really well, but I don't know if technic pins and axles could survive that kinda of strain in the long run.
 I made it 
  July 18, 2013
Quoting Achintya Prasad Very nice! I never thought of actually changing the path that the track actually took; thats interesting! Though, I would imagine, that does really strain the front sprocket, right? Can't wait to see the video!
It does strain the sprocket if there is a large weight on it, but most of the weight is at the back of this MOC, so i don't get that problem (this does however, reduce the effectiveness of the steering due to it not being pushed into the ground). The video is also up now, i had some problems with youtube's new embed codes!
 I like it 
  July 18, 2013
Very nice! I never thought of actually changing the path that the track actually took; thats interesting! Though, I would imagine, that does really strain the front sprocket, right? Can't wait to see the video!
 
By Thomas Lupson-Darnell
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LEGO models my own creation MOCpages toys shop Mindstorms Flexible Track VehicleRobotics


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