Chapter VI. Building the Car

"Well," remarked Tom to himself, about two hours later, when he had left Mary Nestor at her dock, and was on his way home, "I feel better than I did, and now I must do some hard thinking about my runabout. I want to get it the right shape to make the least resistance." He began to make some sketches when he got home, and at dinner he showed them to his father and Mr. Sharp. He said he had gotten an idea from looking at the airship.

"I'm going to make the front part, or what corresponds to the engine-hood in a gasolene car, pointed," he explained. "It will be just like the front of the aluminum gas container of the airship, only built of steel. In it will be a compartment for a set of batteries, and there will be a searchlight there. From the top of some supporters in front of the two rear seats, a slanting sheet of steel will come right down to meet the sloping nose of the car. First I was going to have curtains close over the top of the driver's seat, but I think a steel covering, with a celluloid opening will be better and make less wind resistance. I'll use leather side curtains when it rains. Under the front seats will be a compartment for more batteries, and there will be a third place under the rear seats, where I will also carry spare wheels and a repair kit. The motors will be slung under the body of the car, amidships, and there will also be room for some batteries there."

"How are you going to drive the car?" asked Mr. Sharp. "By a shaft?"

"Chain drive," explained Tom. "I can get more power that way, and it will be more flexible under heavy loads. Of course it will be steered in the usual way, and near the wheel will be the starting and reversing levers, and the gear handle."

"Gears!" exclaimed the aged inventor. "Are you going to gear an electric auto? I never heard of that. Usually the motor directly connected is all they use."

"I'm going to have two gears on mine," decided Tom.

"That's a new idea," commented the aeronaut.

"It is," admitted the lad, "and that's why my car is going to be so speedy. I'll make her go a hundred miles an hour, if necessary!"

"Nonsense!" exclaimed his father.

"I will!" cried the young inventor, enthusiastically. "You just wait and see. I couldn't do it but for the gears, but by using them I'll secure more speed, especially with the big reserve battery power I'll have. I know I've got the right idea, and I'm going to get right to work."

His father and Mr. Sharp were much interested, and closely examined his sketches. In a few days Tom had made detailed drawings, and the aged inventor looked at them critically. He had to admit that his son's theory was right, though how it would work out in practice was yet to be demonstrated. Mr.