Un1337ninj4 Posted January 31, 2015 Share Posted January 31, 2015 What do you think of reverse joint leg units on bipeds? From my perspective I see they would be interesting as a slight slip in the design makes for a bad center of balance and/or no balance at all, not to mention from this angle it looks to be potentially more expensive to both maintain and construct than more traditional "forward-knee" builds. That said I love the look, what are the up-sides? Link to comment Share on other sites More sharing options...
Vyrn Posted January 31, 2015 Share Posted January 31, 2015 Upsides? They make you jump a whole lot higher in Armored Core. I think looking really cool is another upside as well. Link to comment Share on other sites More sharing options...
Seqan Posted January 31, 2015 Share Posted January 31, 2015 From a realistic engineering standpoint... The joint is moot. "Walker" or true "ATV" technology does not currently exist. AFAIK, what you see in games and movies is merely cosmetic. We have not built a perfect walking machine with either "knee" joint. Link to comment Share on other sites More sharing options...
Zoracraft Posted January 31, 2015 Share Posted January 31, 2015 I don't know about robots, but the werewolves in skyrim have reverse joints on their lower legs, and they can run crazy fast. Maybe it would provide more momentum, since the robot could fall forward to become aerodynamic, and it's knees wouldn't get in the way. Link to comment Share on other sites More sharing options...
doomagent13 Posted January 31, 2015 Share Posted January 31, 2015 Something to keep in mind: birds have backwards knees, and do just fine... Link to comment Share on other sites More sharing options...
Valafor Posted February 1, 2015 Share Posted February 1, 2015 Something to keep in mind: birds have backwards knees, and do just fine... Something to keep in mind A majority of birds can fly. And in that minority of birds who can't, they can either swim or are just so damn big and aggressive that things don't want to mess with them. Either that or they're dead. So in other words, this is the worst example you could possibly give. Link to comment Share on other sites More sharing options...
MageMeat Posted February 1, 2015 Share Posted February 1, 2015 (edited) From a realistic engineering standpoint... The joint is moot. "Walker" or true "ATV" technology does not currently exist. AFAIK, what you see in games and movies is merely cosmetic. We have not built a perfect walking machine with either "knee" joint. Pretty much this. Those constructs that can walk (that actually exist, of course) do it slowly, clumsily or both. Hypothetically speaking, I don't think forward or backward joints would make a difference. If we're talking about legs with one main joint (between the thigh and calf), what really matters is how the "thigh" would pull the lower leg. Concerning balance, that depends entirely on the positioning of the legs and the structure of whatever they're supporting. And about the cost and maintenance, I'm guessing that it would be about the same as if it were forward joint, because it's really just reversing the way the leg is pointing. Oh, and the way the foot is facing. Edited February 1, 2015 by MageMeat Link to comment Share on other sites More sharing options...
Sixty5 Posted February 1, 2015 Share Posted February 1, 2015 I'd say that it limits your design in some ways It's a trade off like any other sort of design choice. You gotta consider what you want your robot to do, and the pros and cons of each choice. You also have to think about if a bipedal design is the best choice overall. Two legs are much less stable than 4, and don't offer much in the way of advantages outside of interacting in the human world. And in that case it is far better to go for a more standard leg design, for familiarities sake. Link to comment Share on other sites More sharing options...
011100110110000101101101 Posted February 16, 2015 Share Posted February 16, 2015 (edited) This seems appropriate. Not a biped I know, but here you can see how the reverse leg joints work. Edited February 16, 2015 by 011100110110000101101101 Link to comment Share on other sites More sharing options...
Un1337ninj4 Posted February 16, 2015 Author Share Posted February 16, 2015 This seems appropriate. Not a biped I know, but here you can see how the reverse leg joints work. I keep wondering what would happen if Boston Dynamics teamed up with Google. Link to comment Share on other sites More sharing options...
011100110110000101101101 Posted February 16, 2015 Share Posted February 16, 2015 I keep wondering what would happen if Boston Dynamics teamed up with Google. Google did buy them. I suspect faster advancements in the tech because of that. Link to comment Share on other sites More sharing options...
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