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:
“Thy hatred for this misery befallen;
On me already lost, me than thyself
More miserable. Both have sinned, but thou
Against God only; I against God and thee,
And to the place of judgment will return,
There with my cries importune Heaven, that all
The sentence, from thy head removed, may light
On me, sole cause to thee of all this woe,
Me, me only, just object of his ire.””
—John Milton (1608–1674)
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)