131.
[Illustration: FIG. 131.--Front elevation of chassis.]
[Illustration: FIG. l32.-Wheel for model aeroplane chassis.]
[Illustration: FIG. 133.--Plan of model aeroplane.]
The Wheels and Chassis.--WW are the two wheels on which the model runs.
They are made of hollow brass curtain rings, 1 inch in diameter, such as
can be bought at four a penny. For spokes, solder two strips of thin tinned
iron to the rings, using as little solder as possible. (Fig. 132.) To
connect these wheels with the chassis, first bind to the lower ends of xy,
xz two strips of thin tinned iron, T3 and T4, after drilling in them two
holes of sufficient size to allow a piece of steel wire of "bonnet pin"
gauge to pass freely, but not loosely, through them. Soften the wire by
making it red hot and allowing it to cool slowly, and solder one end of
this wire (which must be quite straight and 5-1/4 inches long) to the
centre of the cross pieces or spokes of one wheel. Pass the axle through
the holes in the ends of xy, xz, and solder on the other wheel. Your
chassis is then finished.
The rear skid (RS in Fig.
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