An Arlington man died Wednesday when his Kawasaki Ninja motorcycle crashed into a brick wall at high speed. Police now say Hung Dang Pham was heading south on New York Avenue where it takes a bend near Sublett. Pham apparently lost control on the curve, rode up over a sidewalk, and slammed into the wall about two miles from his home. The crash was mid-morning, and the weather was clear, so police are not sure what caused it.