Popular Science Monthly
��137
��so that when the lever is in a vertical position the drive wheel will be raised 3 in. from the ground. The brake pedal is shown in Fig. 11. Its position de- pends upon the side of the wheel hub chosen for the location of the brake lever. It is connected with the brake lever with the No. 6 wire.
The engine can now be placed and lined up. This must be done carefully, as a very slight error may be the cause of a broken chain. As no two types of engines are mounted exactly alike, it will be necessary for the builder to devise a mounting for the particular kind at hand. One form of support, with per- haps a few alterations, should fit any ordinary engine, as shown in Fig. 12. The exhaust pipes may need to be bent to clear the engine supports. If there is no objection to noise they can be cut off to a length of 6 in. and the muffler discarded.
One way to arrange the engine controls is to run wires or rods from the throttle and magneto to small levers placed at the side of the seat. Means must be pro- vided to keep the levers in position when once set. If the engine is equipped with battery ignition a box for the cells can be constructed under the seat.
��Almost any kind of a tank may be used for the gasoline. The one shown was a motorcycle tank 6 in. in diameter and 20 in. long with compartments for both gaso- line and oil. If one of this type is not obtainable, a two-quart can fastened to the seat back and connected with the engine by brass tubing can be used for the oil.
With some types of engines it may be possible to provide a crank for starting purposes, otherwise it will be necessary to turn the drive wheel over. If desired, the seat can be made wider to accommo- date two passengers, although this will mean changing the position of the steer- ing wheel and lever, and making the seat higher so that the rod from the lever will pass underneath.
While the plans show an open sled, a hood for the front may be attached in order to avoid possible discomfort on a long drive. Such a hood can be made from sheet metal in any desired shape and attached, so that it will protect the rider. The hood may be given a form similar to the ones used on automobiles, so that it will come up well over the driver's legs, and should have a wind- shield at the top to protect the face.
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��Details of all the parts entering into the construction of a motor sled to be driven by a motorcycle engine of nine horsepower mounted on the rear part of the frame
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