3 legged spiderlike creature movement?

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Old 04 April 2005   #1
3 legged spiderlike creature movement?

Does anybody have any ideas on how a three legged creature can move? the creature i'm workin on is basically has long spiderlike legs, and has a moveable head. Are there any references i can look at for something that moves similar? any links would be helpful, diagrams, sketches, i need all the help i can get.

Heres a rough idea of my character

 
Old 04 April 2005   #2
looking at the model i would say it should take very small, short steps. whilst 1 leg is in the air it is un balanced. unless it had more of a limping gait ( the middle leg moves out quickly and pulls the other two legs up behind it.

3 legs seems tricky. mainly for the whole balancing thing. with 2 legs it makes sense as the COM generally moves over the planted foot, with 4 legs generally the opposite feet are planted (for example front right back left) which gives it some degree of stability whilst making the step even 6 and 8 legs are ok as the balance is maintained whilst taking the step but i have never really found a good way of doing 3.


how about this. from you start pose move the hed toward the front leg then move the back leg ( in the middle in the illustration) before moving the remaining leg, then take another step forward with the front leg again. The will be quite a bit of rocking in the head as it has to swing all over the place to maintain some balance.
 
Old 04 April 2005   #3
Hey thanks for your advice Dave_Hingley. I agree that the head will need to be used a lot to maintain balance. I look kinda menacing swaying its head around while staring at its victim. Just have to make sure it won't look goofy whi'le doin it. Just wondering though, are there any actual 3 legged references i can look at?
 
Old 04 April 2005   #4
i could be wrong but i think the little spider scanning gizmo thingys in minority report have 3 legs. ( for reference sake )
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Old 04 April 2005   #5
Thanks! They are three legged! The way they walk is two front legs first, then the back leg, that way they are more stable.

Last edited by cok3 : 04 April 2005 at 12:08 AM.
 
Old 04 April 2005   #6
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