Step 2Design
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K'nex was a limitation in the design, as the rod lengths only came in certain lengths. Creating intermediate lengths with rods and connectors would weaken the structure and increase weight. The lengths used here can be modified, but the K'nex motors will probably be too weak to power anything larger. Also the joints were not entire pieces, so the ends would twist a great deal, requiring a heavy double-layer design.
Keep in mind that this is a very very basic design. It does not have numerous legs, so the movement is very unstable. More legs can be added by simply attaching legs at different points along the central axle.