The Launch Boys' Cruise in the Deerfoot

tor

craft through the water at the rate of ten, fifteen, twenty and sometimes more miles an hour. You thought it would be hard to learn to manage the boat and kno

hich governs the smooth, swift progress of the str

d into the carburettor a quantity of air is drawn in from the outside. The two mingle and form a highly explosive gas. To start, you give the fly-wheel a rapid swing, which causes the piston to move downward. This action sucks the gaseous mixture into the cylinder through the inlet valve. The further movement of the fly-wheel causes the piston to move upward, compressing the gas into small volume. While the gas is thus compressed it is exploded b

d, but in motor boats and automobiles it acts only on one side. The speed wit

or is generated by a dry battery or by a magneto-electric machine driven by the motor itself. There is also the "make and break" spark, to which we need give no attention. The two ends of

iction. Lubricating oil is as essential as gasoline; the ignition battery must be kept dry; you must know how to operate the reversing lever, to shut off, to start and to hold the desired speed. Except whe

motor boat, you will be taught how to control and manage it by a practical instructor, and such instruction is better than pages of directions. To show the truth o

opper washers, all fastenings being of bronze or copper to withstand salt water. Seams of hull caulked with special cotton payed and puttied. Outside of mahogany planking, finished in natural wood with spar varnish. Watert

guaranteed speed of twenty-four miles an hour. The motor was placed under the forward deck, wher

a constant level in the crankcase by a geared oil pump. A gear-driven pump circulated the necessary cooling water for the cylinders, which passed out through the copper exhaust pipe at the stern. Only one operating lever was employed

ent, rubber matting for floor, cushions and upholstered backs for seats, three sailing lights, oars, rowlocks and sockets, compressed air whistle with tank, two pairs of cork fenders

s guarded against flying spray and sweep of wind and rain. Nothing that

controls the electric current for the jump spark, open the valve that allows the gasoline to flow from the tank into the carburettor, swing aroun

perhaps, after all, he forgot to place the switch key in position; the spark plugs may be fouled or cracked, the gasoline shut off, the

The cause may be faulty ignition, because of a disconnected wire or a loose terminal, ex

may seem almost a hopeless task, but, as I stated at the beginning of this chapter, patience and applica