Abstract: The invention provides a bi-material tubing formed of a composite member and a noncomposite member. The tubing has a locking portion where the composite member is secured to the noncomposite member by chemically bonding alone or in combination with mechanical joining techniques. A method of making the tubing is also provided.

Abstract: Front and rear wheel drop outs for bicycle frames that are specially suited for bicycle frames of the tubular strut type used in light weight high performance high quality bicycles, the frames of which comprise a plurality of tubular strut members interconnected by lugs and brackets to form the well known generally diamond shaped frame that includes the familiar head, top, down, and seat tubes, the familiar pair of seat stay tubes, and the familiar pair of chain stay tubes. The invention provides for a special front wheel fork tip arrangement of the drop out type that is applied and brazed, socket fitted, relation to each fork blade of the front wheel mounting fork assembly, and a special rear wheel drop out bracket arrangement involving right hand side and left hand side drop outs that are formed to receive in brazed, socket fitted, relation the bicycle frame seat stay tube and the frame chain stay tube that is to be made fast to same.