Most bicycles, tricycles and motorcycles have a tubular frame. The front fork (which holds the front wheel) pivots within the head tube . On a motorcycle, the "head tube" is normally called the steering head. On a bicycle the head badge is invariably mounted on the head tube.
Read more about Head Tube: Bearings, Castor Angle, Head Tube Diameters
Famous quotes containing the words head and/or tube:
“Sebastian: Angel was like cognac, all fire in a glass. But you, you are like champagne. Sparkling, tantalizing, you make a man’s head spin.
Holly: Pheww ... you’ve got a terrific line.”
—Fredric M. Frank (1911–1977)
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)