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IN A WORLD WITHOUT CASTINGS Would One Water Sport Be As Wild?


Isaac Newton might not be the fi rst name that comes to mind


when you think of skipping across a lake on a personal watercraft, but the brilliant physicist led the way for the summer fun with his third law of motion. For every action, there is an equal and opposite reaction. When it comes to watersports, this law explains how one little casting can produce plenty of power. A personal watercraft eatures an impeller most commonly cast stainless steel, that acts as a propeller fi tted completely within a pipe hen you turn the throttle the impeller sucks water through a pipe and blasts it out the ba k. ction—pulling in water under high pressure—


asting can produce plenty of po er A personal watercraf features an impeller, most commonly cast stainless steel, that acts as a propeller fi tted completely within a pipe. When you turn the throttle, the impeller sucks water through a pipe and blasts it out the back. T e action—pulling in water under high pressure— leads to a reaction of the craft skipping across the surface of the water.


16 | MODERN CASTING April 2016


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