4 Legged Walker (version 3)

The main problem of the version 2 of my walker was that since feet rotate when legs move forwards and backwards, the robot does not advance very well. To solve that problem, I decided to experiment with some new type of legs in which feet do not rotate. I combined ideas from both versions 1 and 2. This time the final result was rather large, but thanks to a better gearing the robot is strong enough to lift its own weight even with just two legs. Here's a comparison of the new version 3 (left) with the older version 2 (right):

Again, this robot uses 2 XL motors (lifting robot) and 2 M motors (to move legs forward and backwards).

Here're some more pictures of the robot:

Compared to version 1, notice that each leg is now supported by two parallel beams, each one of them with its own Technick Link. Thanks to that, when legs move forward and backwards, the feet do not rotate, they just move forward and backward. Here's a video of it walking:

So, finally I managed to build a 4 legged walker that advances without problems! It can use lots of improvements, since it could be made smaller, or faster. But I am satisfied now, and claim success!

I always wanted to build a 4 legged walker after I saw this _AMAZING_ model: http://jpbrown.i8.com/quad1.html, and although mine is not even half as good as JP Brown's, I think it's quite nice. Now, my next project is to try to incorporate linear actuators into the robot to see if I can make it smaller and smoother.