Dead three weeks sin 'of a stroke.

But look carefully, there are no lurches, pauses, hitches or dead spots in their stroke technique - they have excellent rhythm and timing, moving seamlessly from one phase of the stroke to the other.

The Bore is the diameter of the cylinder. The stroke is the distance the piston travels from BDC (Bottom dead center) to TDC (top dead center). The Bore is always mentioned first.