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Would it be possible to make a walking 8 legged... thing?

I'd like to make a walking spider, about 30 cm tall, preferably out of metal. It wouldn't even have to go in a perfectly straight line. Ideas?

13 answers
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Oct 31, 2009. 9:06 AMgmxx says:
 yes.

www.lynxmotion.com/Category.aspx has some 6 legged walkers. i remember there being an 8 legged one, but can't seem to find it. you might be able to do it off the servo erector set
Nov 1, 2009. 9:45 PMgmxx says:
 it does... the principal being that at any given point 3 legs would be on the ground, forming a triangle. (the minimum number of points to make a stable surface.)

you might be able to modify the idea so that there are 8 legs, and the 2 outer legs on one side, and the 2 inner ones on the other side move at the same time. not a true octapod, but it might work.

or if you do legs 1,3 on one side and 2,4 on the other to do the same.
Oct 31, 2009. 8:14 AMGoodhart says:
I haven't a clue here, but I would suggest avoiding overly complicated things like the one I picture below: 

 
Nov 1, 2009. 4:30 AMGoodhart says:
A bit, but I can't recall from where...
 
Nov 2, 2009. 3:24 AMGoodhart says:
Posted just today even. ;-)
 
Nov 1, 2009. 6:37 AMjtobako says:
Crabfu steampunk might have one, otherwise there's a mechanical ant somewhere for sale.
Oct 31, 2009. 5:38 AMRe-design says:
If you can figure out how you want to make a 4 legged thing walk then it's just the problem of how to add 4 more legs.  You can probably connect them to what ever is moving the first 4 or add another complete unit.

Have you thought out the problem of how to get 4 working yet?  What materials do you want to use and what motor/gear setup are you thinking about?

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