Boys' Book of Model Boats

ape little model from which he will be able to derive a good deal of pleasure. It has a speed of from 21/2 to 3 miles an hour when equipped

are shown in Fig. 58. Only five pieces are necessary: two side pieces, a stern piece, a bow piece, and a bottom piece. The

with a finer paper. It is understood that sandpapering should always be done with the grain, never across the grain. The sides of the boat are cut about 1/4 inch thick, but they are planed thinner in place

is cut to the shape shown at Fig. 58, and beveled along the bottom edge to enab

All the holes for the wood-screws should be countersunk so that the heads will come flush with the surface of the hull. Now one of the sides should be screwed to the stern piece, at the same time bending the bottom and side to meet. This is done gradually, inch by inch, and screws are put in place at equal distances. When the bow is reached, the side piece

first coat is dry the holes left by the screw-heads are carefully puttied over, and the hu

t to fit the bottom and will act as a support for drilling. It will also help greatly to make a water-tight joint around the tube. The distance from the point where the stern tube passes through the bottom to the stern should be about 121/2 inches. The stern tube should be mounted as ne

is fastened with solder in each end. The tube is then filled with melted vaseline, which is allowed to cool. The hole in the hull around the tube is then

a piece of tinplate and extends half way down the boat. When the turtle-deck is finished, it i

ribed with a sharp knife to represent planking. This method

nd the motor a hatchway is fitted to give

motor should weigh about 1 pound 3 ounces. The hull being f

tor-shaft. This forms a 31/2 to 1 reduction gear, which produces a greatly increased speed of the boat. The other end of the propeller-shaft rests in the skeg bearing. In this present case this consists of a tube abo

READY FO

to a point where it w

41. As before mentioned, either dry or storage batteries may be used as a source of current. The writer strongly advises the use of storage batteries if possible. The initial cost of these batteries is greater than that fo

-shaft is tapped, and a brass screw is used to clamp it in position after setting it with the fingers. The rudder-shaft is a 3/4-inch

EADY

up, ready for a trip wh

-deck makes a very pleasing combination. Fig. 60 shows a rough plan of the general arrangement of the power machinery. Figs. 61, 62

instance, a little stack or ventilator may be added to the turtle-deck, and a

rate rapidly when in use, and small storage batteries quickly lose their charge,