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Show BALANCED COIN SHOWS HUDSON " ENGINE SMOOTHNESS r r txrmx. ,. . i.i. -U f & ft- WW I Workman Indicating lira-cant plaea balancad on ita ad (a on tha cyllndar h.td oa Hudton angina rotating at 2. 200 ravolutiona par minvta. So free is the Hudson engine jom vibration that a five cent piece will stand on its edge on the cylinder head t over 2,000 revolutions per minute. Visitors passing through the Hudson factory are often given this demonstration demonstra-tion in the block test room and it is a very graphic and impressive demonstration oi the accuracy of balance of this motor, particularly since these engines are 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 of the as-tembly as-tembly line. The fuel and water lines are connected and the engine is started tinder 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 after which the speed is increased to about 2,0c1 r. p. m. .or over two nours. When the coin balance feat was photographed the engine waa 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 of that coin-balancing demonstration demon-stration there is story oi science, mathematics, engineering and menu -ture that would fill a volume. |