This is knex walker I made. It's about 18in x 12in. It's walks at a good pace, and never trips. Enjoy and don't forget to vote for this in the Robot Contest if you liked it. :D

Step 1: Building the Frame.

Build the frame as shown.

Step 2: Building the Feet.

Build the feet as shown. Picture three is a side view of picture two.

Step 3: Buiding and Connecting the Feet.

Picture one: Build the other foot. It's the same thing as foot one just built the opposite way.

Picture two: Add the orange, gray, and white pieces. Those go on all four feet. These will hold the feet on.

The rest of the pictures: Are just the finished walker from a bunch of angles.

I hope you enjoyed, also if you have any modification ideas please tell me. Thank You!!! :D