. Automotive industries . the longer will be the lever arm whichmoves the weight in its rotation, and the greater theeffort required to get it up to speed. Inversely, thegreater the amount of energy stored up in the wheelonce it has been brought up to speed, the more violentmust be the braking action, and the disadvantages of aroad wheel acting as a flywheel are well known; it isthese disadvantages which have led to the almost com-plete abandonment of the numerous designs of demount-able rim, which apparently are more attractive than thedemountable wheel. It is easy to measure the power requir
. Automotive industries . the longer will be the lever arm whichmoves the weight in its rotation, and the greater theeffort required to get it up to speed. Inversely, thegreater the amount of energy stored up in the wheelonce it has been brought up to speed, the more violentmust be the braking action, and the disadvantages of aroad wheel acting as a flywheel are well known; it isthese disadvantages which have led to the almost com-plete abandonment of the numerous designs of demount-able rim, which apparently are more attractive than thedemountable wheel. It is easy to measure the power required to start awheel when fitted with a clincher and straight side tire respectively. Ex-periments made byMichelin were con-ducted with twowheels identical upto the tires, inwhich the differencein weight at the cir-cumference amount-ed to lb. Account of Test The tire loaded with a weight P of 1100 lb. is carried Fig. l—Machim for testing t the end of a tires os regards rolling re- „ T. ,%,„,„., lever arm B. It. AUTOMOTIVE INDUSTRIESTHE AUTOMOBILE
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
