Comments on: LEGO Triangles http://www.brickengineer.com/pages/2007/10/10/lego-triangles/ LEGO Engineering for LEGO NXT and Robot Enthusiasts Sun, 08 Jan 2012 05:55:17 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Vikram http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-19940 Vikram Sat, 14 May 2011 08:05:23 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-19940 Amazing post, truly! <a href="http://skillset.com/" rel="nofollow">http://skillset.com/</a> Amazing post, truly!

http://skillset.com/

]]> By: admin http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-18640 admin Sun, 24 Apr 2011 21:49:20 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-18640 I not only tried them, but I have used them in several robotic designs. The fit is indeed tight, but I have not found it to be as tight as you describe. I would make sure that all liftarms in your design are indeed 1 x 11. I cannot imagine how the liftarms could possibly be bending if they were the same length. If one was longer or shorter than the others, then what you describe should indeed happen. The critical part of the design is not the side length of the triangle, but the 60 degree angles at the three intersections. Since these angles are the same for any equilateral triangle, the joint will work equally well with any straight liftarms as long as they are the same length. I hope that this helps! I not only tried them, but I have used them in several robotic designs.
The fit is indeed tight, but I have not found it to be as tight as you describe.

I would make sure that all liftarms in your design are indeed 1 x 11.
I cannot imagine how the liftarms could possibly be bending if they were the same length.
If one was longer or shorter than the others, then what you describe should indeed happen.

The critical part of the design is not the side length of the triangle, but the 60 degree angles at the three intersections.
Since these angles are the same for any equilateral triangle, the joint will work equally well with any straight liftarms as long as they are the same length.

I hope that this helps!

]]> By: adam http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-18639 adam Sun, 24 Apr 2011 21:35:55 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-18639 Great deisgn on paper - when I go to build the 11 lenght liftarm triangle using the 1/2 liftarms (1x3) and the (1x2) they are an extremely tigh fit against each other. So much force is necessary to keep the triangle aligned, that the 1x11 liftarms are actually bending in the middle - to much stress! My chance, did you get an opportunity to build this model after desiging it on papaer to see the fit of each piece against the next peice. The stress placed on the each piece after construciton will cause premature wear. Great deisgn on paper – when I go to build the 11 lenght liftarm triangle using the 1/2 liftarms (1×3) and the (1×2) they are an extremely tigh fit against each other. So much force is necessary to keep the triangle aligned, that the 1×11 liftarms are actually bending in the middle – to much stress!

My chance, did you get an opportunity to build this model after desiging it on papaer to see the fit of each piece against the next peice.

The stress placed on the each piece after construciton will cause premature wear.

]]> By: Jessie http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-113 Jessie Fri, 11 Apr 2008 10:19:07 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-113 <strong>Jessie...</strong> This is real good info. Thanks for sharing.... Jessie…

This is real good info. Thanks for sharing….

]]> By: Rich http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-44 Rich Mon, 14 Jan 2008 04:09:16 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-44 In an effort to keep you awake at night pondering this, how would convert your triangle concept into a model of the Gateway Arch in St. Louis? In an effort to keep you awake at night pondering this, how would convert your triangle concept into a model of the Gateway Arch in St. Louis?

]]> By: admin http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-7 admin Wed, 17 Oct 2007 03:34:11 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-7 Hi Alex, I use the LDraw package with MLCAD to record the designs. I then use L3PAO (part of LDraw) to generate the POV files for POV-Ray for Windows 3.5 I see that you do neuroscience research... me too!!! http://knuthlab.rit.albany.edu/publications.html Please let me know if you have other questions. Cheers, Kevin Hi Alex,

I use the LDraw package with MLCAD to record the designs.
I then use L3PAO (part of LDraw) to generate the POV files for POV-Ray for Windows 3.5

I see that you do neuroscience research… me too!!!
http://knuthlab.rit.albany.edu/publications.html

Please let me know if you have other questions.
Cheers,
Kevin

]]> By: Alex Dimitrov http://www.brickengineer.com/pages/2007/10/10/lego-triangles/comment-page-1/#comment-4 Alex Dimitrov Tue, 16 Oct 2007 14:23:04 +0000 http://www.brickengineer.com/pages/2007/10/10/lego-triangles/#comment-4 Hi, Kevin What CAD system do you use do design and render your constructs? Thanks Alex Hi, Kevin

What CAD system do you use do design and render your constructs?

Thanks
Alex

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