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:
“A lioness, with udders all drawn dry,
Lay couching, head on ground, with cat-like watch
When that the sleeping man should stir; for ‘tis
The royal disposition of that beast
To prey on nothing that doth seem as dead.”
—William Shakespeare (1564–1616)
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)