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Show EBTGIE CORDS CONSERVE POWER Cord tirss effect a saving of at least j 12 per --ci'.t in power, according to data j compiled bv engineers of the Firestoue ! Tire & Rubber company. Practical tests again ami again have proved the superiority ot cord tires as to power s;:y'T;g as oil ns long mileage, but until un-til Firestone engineers devised an ae-i ae-i curat o laboratory test, the exact sav-( sav-( in in power w;is not known. The Fires-tu-.e tests were made un-i un-i dcr varying conditions and loads and ; were checked g;;inst error several times before they were accepted as final. In almost every case the cord tiro consumed only 83 per cont us much power as the fabric. ' ' Translated into proper tertns, ' ' says A. G. Partridge, general sales manager man-ager of the Firestone company, ''this conservation of power means increased speed in racing cars and, a saving of gasoline ir the ordinary passonger ear. Tn practical tests the value of cord tires to the auto rncer has been shown many times. Fight world's records already have been shattered on Firestone Fire-stone super eorda within the present racing season. In a scientific analysis of the cord tests the engineers pointed out that the power lost in the fabric tires is consumed, by the greater resistance to flexing and is transformed, into heat. The fabric tiro supports . much of the weight of the car instead of acting merely as a resi.stnnce to the air pressure pres-sure within, while the cord tire "makes the air column do the work.J' Hence, the cord tiro is able to deliver more of the power received from the motor to the road. |