My Running Huarache Sandals Evolution – EditPosted: May 31, 2012
Given my lack of form I decided not to endure further plantar strain and created this new sole design with an added a layer of Polypropylene plastic from a old blue trash can for added support.
The idea was to add some motion control to the floppy rubber Huarache sole, and the Polypropylene a widely available material with good energy return seemed ideal.
I also added a thin layer of scrap EVA foam for some psychological comfort (EVA foam sheets are widely available in Mexican school supply shops).
The new Polypropylene layer also allowed me to make recessed channels between the strap holes in such a way that the strap is no longer exposed to the abrasive running surfaces and will not wear down over time.
The recessed channels will allow me to experiment with other recycled materials that also offer some breathability.
After a first few runs the Polypropylene plastic unfortunately does not add any noticeable support to my foot. It does however have an unexpected motion control effect, in so far that it’s flatness corrects my foot position to help me land on my mid-foot and not my forefoot.
In case anyone is wondering? I couldn’t resist Photoshopping the Tyre Valve onto the strap. It hinted to an unusual idea of inflatable feet for increased cushioning.