Parallax Penguin Manual page 9

Step 6: Mount Penguin feet to the ankles
The Penguin kit has (4) 4-40 1/4" long, 0.149" diameter stainless shoulder screws which are used to
attach the feet to the ankles. The head of these screws provides a bearing surface for the ankle so it may
rotate freely within the foot when Penguin leans from side to side.
Each foot has an additional 2-56 threaded hole where the Penguin's ball joints mount for the threaded
rod which connects to the tilt servo (the ski poles). These threaded holes denote the front of the foot.
Carefully drop the ankles into the foot. This is a close-tolerance fit; the ankle will only fit into the foot if it
is inserted squarely. Next, use the 1.5 mm hex key to tighten the 4-40 long 0.149" diameter stainless
steel shoulder screws into the ankle.
The Penguin will now stand up without assistance.
Copyright © Parallax Inc.
Four (4) 4-40 ¼" long 0.149" diameter
stainless shoulder screws hold the ankle
to the feet.
Penguin Robot (#27313-27316) v1.4 2/16/2010 Page 9 of 23