-29-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Configuring
Your
Propilot
725
Trim
Theoretically
if
the
rudder
is
amidships
the
vessel
will
travel
in
a
straight
line.
Often
something
will
cause
the
vessel
to
drag
TRIM--04
to
one
side,
for
example
the
wind,
towing
something
or
current.
To
counteract
this
a
few
degrees
of
rudder
will
be
applied,
this
is
termed
Trim
or
Standing
Helm.
This
setting
adjusts
the
rate
at
which
that
standing
helm
is
applied.
The
higher
the
setting,
the
faster
the
standing
helm
is
applied.
This
should
be
set
so
that
the
autopilot
will
trim
the
vessel
to
the
correct
course
within
60
seconds.
On
single
screwed
vessels
or
sailing
yachts
it
is
only
possible
to
check
the
Trim
setting
while
using
the
craft
when,
for
example,
the
prevailing
conditions
cause
the
vessel
to
steer
with
offset
rudder.
The
correct
Trim
adjustment
setting
for
these
types
of
vessel
is
therefore
best
found
by
experience.
To
check
the
Trim
adjustment
with
twin
engine
vessels,
run
the
boat
under
Auto
command
with
both
engines
running,
then
close
down
one
engine.
The
vessel
will
initially
go
off
course
but
should
return
to
course
in
less
than
60
seconds.
If
the
vessel
takes
a
longer
period
of
time
to
return
to
course
then
increase
the
value
set
for
Trim.
The
range
is
from
00
(No
Trim)
to
20
(Maximum
Trim).
The
setting can be set at different levels for each choice of Pilot A,
B or C.
Rudder Ratio Gain
G A I N - - 0 3
This
setting
adjusts
the
Gain
of
the
Rudder
Ratio
setting.
It
rarely
needs
adjusting,
but
should
be
adjusted
so
that
in
average
conditions
the
Rudder
Ratio
setting
used
is
between
5
and
10.
If
the
settings
are
generally
higher,
increase
the
Gain,
if
lower,
decrease
the
Gain.
The
range
is
from
01
minimum
Gain,
to
10
maximum
Gain.
The
Pilot
A,
B
and
C
values
will
always
be
the
same.
If
you
change
one
it
will
change
the
other.
