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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
107
2.
It
must
not
be
damaged.
That
is
to
say,
it
must
be
unkinked,
rustless,
and
unscored.
3.
Now
as
regards
keeping
wire
in
good
condition.
Where
outside
wires
are
concerned,
they
should
be
kept
well
greased
or
oiled,
especially
where
bent
over
at
the
ends.
Internal
bracing
wires
cannot
be
reached
for
the
purpose
of
regreasing
them,
as
they
are
inside
fabric-covered
surfaces.
They
should
be
prevented
from
rusting
by
being
painted
with
an
anti-rust
mixture.
Great
care
should
be
taken
to
see
that
the
wire
is
perfectly
clean
and
dry
before
being
painted.
A
greasy
finger-mark
is
sufficient
to
stop
the
paint
from
sticking
to
the
wire.
In
such
a
case
there
will
be
a
little
space
between
the
paint
and
the
wire.
Air
may
enter
there
and
cause
the
wire
to
rust.
4.
Tension
of
Wires.--The
tension
to
which
the
wires
are
adjusted
is
of
the
greatest
importance.
All
the
wires
should
be
of
the
same
tension
when
the
aeroplane
is
supported
in
such
a
way
as
to
throw
no
stress
upon
them.
If
some
wires
are
in
greater
tension
than
others,
the
aeroplane
will
quickly
become
distorted
and
lose
its
efficiency.
In
order
to
secure
the
same
tension
of
all
wires,
the
aeroplane,
when
being
rigged,
should
be
supported
by
packing
underneath
the
lower
surfaces
as
well
as
by
packing
underneath
the
fuselage
or
nacelle.
In
this
way
the
anti-lift
wires
are
relieved
of
the
weight,
and
there
is
no
stress
upon
any
of
the
wires.
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