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:
“I feared
The belly-cold, the grave-clout, that betrayed
Me dithering in the drift of cordial seas;
Ten years are time enough to be dismayed
By mummy Christ, head crammed between his knees.”
—Allen Tate (1899–1979)
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)