Ekobots - Spiral Tire.

Spiral Tire with coil effect wheel 90mm diameter.
I added a mirror version of the same object.
Use it to change left and right side.

You can help me to do more things like this.
Buy my designs at pinshape:http://pinshape.com/users/27920-jsirgado
The OpenSCAD file is there, you can change all.