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The goal of the project is to make the spikes retractable. In Cross Country, we run on grass, dirt, pavement, and many other surfaces. When not on a permeable surface such as grass, it is easy to damage/dent the insert spikes. By using a spring system, i was able to make my running spikes retract the inserts when the runner reaches a hard surface (pavement for example).

Step 1: Taking Apart the Shoe

I used a Nike Victory XC spike that is used for the sport of cross country. The first step of the process was to remove the inner sole. From the I could begin drilling the holes for the spikes...

Step 2: Drilling the Holes

After taking apart the shoe, I began to drill the holes where the former threads used to be. In place will be springs attached to the inserts.

Step 3: Attaching the Spikes to the Springs

After this step, the shoe is able to retract the spikes when force is applied to them.

Step 4: Testing and Evaluation

The project was a success. The spikes retract into the shoe when force is applied.

<p>This is awesome! Now just wait for Nike to call you up and offer you a design role. :D</p>
Not at all, I reapplied the inner sole and there is no discomfort. Thanks for the comment
<p>whoa, super creative! does it hurt your feet to run in these? Can you feel them at all?</p>

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