National Geographic : 1918 Jun
Lf_ i How Big Should the Gasoline Tank Be? A Motoring Question that Demonstrates Franklin Economy Suppose you could fill the gasoline tank only once-with 270 miles to go; how big should the tank be? "It depends on how much gasoline the car burns up" -would naturally be your answer to this question. Exactly; and your answer leads directly to the reason why the Franklin is the most econ omical fine car in America. The Story Told by the Gasoline Tanks The Franklin Car (the one on the left in the above picture), because it is scientifically free from unnecessary weight, runs 270 miles on its gasoline tank capacity of 13 gallons. This is at the rate of 20 miles to the gallon. The average heavy car (on the right), to run the same distance, would require a cumbersome gasoline tank holding 27 gallons-at the rate of only 10 miles to the gallon. Why? Simply because of the mechanical law-as old as the ages-that weight requires power in proportion to move it. And the more power needed, the more gasoline consumed. Wherever there is excessive weight, there is friction, wear and drag-andit always shows up in the gasoline tank. Weight Means Waste This question of motor car weight has made people think. The vital national need of the times is economy-in motoring as in every thing- and the average heavy and rigid car is handicapped in its attempt to comply with the demand. It is bound to use extra fuel in mov ing its own excessive weight, while the easy rolling Scientific Light Weight Franklin, with its flexible construction, delivers the maximum force of its fuel into actual mileage. Light Weight Means Tire Economy The same fundamentals decide tire-results. Heavy weight and rigidity pound out tires be fore their time. Franklin Light Weight and Flexibility allow them to deliver the full mile age that is in them. Motorists are no longer blind to the handi caps of weight. They are aware that they may be expressed in terms of dollars and cents, and people today are not throwing money away in the upkeep costs of a wasteful motor car. They are demanding motor car efficiency that at least is comparable to the Franklin facts of daily performance 20 Miles to the gallon of gasoline-insteadof 10 10,000 Miles to the set of tires-insteadof 5,000 FRANKLIN AUTOMOBILE COMPANY, SYRACUSE, N. Y.