It's too heavy. After buying a couple to experiment on, I replaced the titanium components with beryllium. Hey, it's toxic, but grams is grams. I also replaced the pulley bearings with superconducting floating bearings to reduce friction. Because of this, on my last charity ride I had my people stationed at regular intervals along the route to spray liquid nitrogen over the mech. Finally, anyone familiar with the theory of relativity will know that the mass of an object increases with its velocity (depending on the frame of reference). To prevent this unacceptable phenomenon, I ride as slowly as possible.