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Show BALANCED COIN SHOWS HUDSON - ENGINE SMOOTHNESS ' i j& J 'v x r v V v ill - k v. . ( m 1 Vi - V" r ? i s , , 1 I Workman indicating five-cent piece balanced on tt edie on th cylinder head of a Hudion engine rotating at 2.100 revolutions per minute. So free is the Hudson engine from vibration that a five cent piece will stand on its edge on the cylinder head at over 2,000 revolutions per minute. Visitors passing through the Hudson factoryare often given this demonstration demonstra-tion in the block test room and it is a very-graphic very-graphic and impressive demonstration of the accuracy ot balance of this motor, particularly since these engines arc never even bolted down on the test blocks. The engines are simply deposited on the test blocks by the crane which brings them from the end ot the as- sembly line. The fuel and water lines are connected and the engine is started ( under its own power and run under the watchful eye of the inspectors. As a part of the manufacturing routine all engines are given this block test at the factory. They are started at about 1,000 r. p. m. and run until warm alter which th apetd U Increased to about 2, COO r. p. m. for over two hours. When the coin balance feat was photographed the engine was turning over at the rate of 2200 r. p. m. Hudson engines are inherently balanced. bal-anced. The crankshafts are fitted with integrally forged counterweights which are so formed as to neutralize the opposing oppos-ing forces created in the engine so completely com-pletely that they are practically nonexistent. non-existent. In addition to this dynamic balance they must also be in static balance as determined by resting them across two knife-edge bars where they must balance in every position. Every shaft is checked for dynamic balance on the latest balancing machines which are mounted on solid concrete foundations founda-tions that go down to hard pan. Back ot that coin-balancing demonstration demon-stration there is a story of science, mathematics, engineering and manufacture manu-facture that would nli a volum. |