To set the elevator, use is made of the short vertical
mast, M1. A small hole is pierced in the front side of the elevator frame
at Z, and through this a piece of thin, soft iron wire is pushed, bent
round the spar, and tied. The other end of the wire is taken forward and
wrapped three or four times round the mast M1, which should have several
notches in its front edge, to assist the setting of the elevator at
different angles. Pull the wire tight, so that the elevator shall maintain
a constant angle when once set. H H1 is a piece of 25 to 30 gauge wire bent
as shown and fastened by binding. It passes round the front of the rod, in
which a little notch should be cut, so as to be able to resist the pull of
the twin rubber motors, the two skeins of which are stretched between H H1
and the hooks formed on the propeller spindles. If all these hooks are
covered with cycle valve tubing the rubber will last much longer. The
rubber skeins pass through two little light wire rings fastened to the
underside ends of HS2. (Fig. 133.)
The front skid or protector, FS, is made out of a piece of thin, round,
jointless cane, some 9 inches in length, bent round as shown in Fig.
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