6B Tsn
'R'
TvpB
BrNrr.Bv.
Steering.
Experience
has shown
that
too
much importance cannot
be
attached to
proper
balance
of
the
front
wheels
and tyres.
As it is only
possible
to
balance the
wheels
and tyres statically,
this
does
not
eliminate the effect of slight
out-of-balance forces which
can only be
detected dynamically. Such a
condition
may
be
caused
by
the
normal
wear of the tyres on the
front
wheels; as
is inevitable
*itn
independent
front su,sfension, tyre wear
will be slightly less
regular than on the rear wheels.
Therefore, it is recommended
that
the front wheels should
be
periodically
changed
to the
rear
and vice versa to
even out the wear
of
the tyres.
Front Suspension.
Each wheel is indeperldently
sprung,
the
suspension consisting
of the two upper
and two lower radius arms
of different
lengths
set
at a leading
angle, between
which
a
vertical
yoke
is
carried,
and
on
this
the
stub
axles are pivoted.
The
upper radius
arms are
connected to and operate the special
Bentley
shock
damper,
which
eff ectively dampens excessive
spring
action.
The main helical
coil spring
is
mounted between
the
forward
lower
radius
arm and a
seat formed as an integral part of the chassis frame.
The
ball
joints
and
the
steering
pivot
bearings are lubri-
cated
from
the
central
chassis
system.
(See
Fig. 5.)
The
shock
damper
consists of
two
pistons
operatingin
cylinders
full of oil, the
oil being
dis-
placed from
one cylinder to the
other
through
drilled
passages,
the degree
of damping being
controlled
by spring
-
loaded
valves.
'
Until
it is obvious
that the
eflectiveness of
the
shock damper
has
become
reduced,
or undue
leakage
is apparent, no attention
whatever will
be necessary
for
ro,ooo miles, when the level of
the oil
in
the
shock
damper
should
be
inspected,
as directed
on
page
32.
It
is of vital
importance
that
only
perfectly clean
oil
of the
correct
grade
should be
used, and
Iine
gauze
before
using.
Fig.
26.-FRONT
SHOCK
DAMPER.
1. Shock
Damper.
2. Filler
Plug.
3. Hydraulic
Brake Pipe,
this
should
be strained through a
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