Angle-milling cylinder heads is one of the best ways to take existing equipment and make it work better. Almost all racers understand the concept-angle-milling is essentially decking a head on an ...

Last summer, I had a chance to sail in a local Wednesday night race with some friends I had not seen in a while. They have a PHRF boat they sail in the jib and main class, and although their priority ...

The radius of a circle is a line, which starts at the centre of the circle and ends on a point on the circumference. The radius is half the length of the diameter. Looking at the diagram, since OA and ...

The angle at the circumference in a semi-circle is 90°. Angle STU = 90° Angles in a triangle add up to 180°. The angle on a straight line is 180°. The angle VOY = 180°. The angle at the centre is ...