Jeff Kellough

Tetsujin Announcer

Jeff Kellough, the Tetsujin announcer, works as a manufacturing engineer at Celerity in Southern California. He has extensive knowledge of mechanical systems, materials selection, and electronic controls. Jeff thinks the coolest invention of all time is microwave pizza. He can be reached at [email protected]

SERVO Magazine would also like to thank our event volunteers for their time and effort in making Tetsujin 2004 such a success! Way to go, Stephen Felk, Nora Judd, Chuck Micnacco, and the Woolley family — Bill, Deb, Bryce, and Evan!

BiNArV bOT Boyz

Billy Holcombe, his son, Jonathan, and his wife, Karen form this team.With the contributions of various coworkers and the support of the family, Binary Bot Boyz has created a high strength carbon fiber and honeycomb suit (materials that aircraft rely upon for their high strength-to-weight ratios). This has created an exosuit that boasts of strength around 920,000 lbs per square inch. Using these materials wasn't easy, though; they present challenges far removed from conventional metal construction. The fabric is about .015" thick and must be layered to the thickness needed, then placed under vacuum, pressure, and heat to cure the resins impregnated into it.Two thicknesses of pre-cured material of .180" and .350" were available and were layered around the perimeter of the parts and compressive points, with the core areas filled with paper/epoxy or fiberglass/epoxy honeycomb.


inancial services consultant Alex Sulkowski is an army of one, constructing his suit solo. Nonetheless, he brings to Tetsujin what we believe to be the only exosuit capable of walking! This ambitious exoskeleton allows a normal paced walk (even a slow jog) in addition to augmenting the lifting of weights. This is accomplished through a design that utilizes the operator's strengths and the strengths of the suit while minimizing their respective weaknesses. Since the suit is very flexible — with little resistance in all of the operator's joints — the wearer can walk by providing the necessary coordinated motion.When lifting weights, many of the suit's joints reach the limit of their ranges of motion and bear the weight of the load.This eliminates the need for coordinated motion of multiple joints when lifting the load, while allowing fast lifting via pneumatic cylinders.Very short lifts of heavy loads are the result.

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