42 SmartPilot X-5 Tiller & GP Tiller Installation & Setup Guide
• If the rudder gain is too low, the boat’s performance will be sluggish – it will take
a long time to make the 40° turn and there will be no overshoot (B below).
Correct this understeer by increasing the rudder gain setting.
To adjust the rudder gain:
1. Access the
RUDD GAIN
screen in Dealer calibration (see
page 53
).
2. Use
-1
or
+1
to adjust the rudder gain.
3. Press and hold
standby
for 2 seconds to save the changes.
4. Press
auto
to check the SPX-5 Tiller system performance in Auto mode.
Counter rudder
Counter rudder is the amount of rudder the SPX-5 Tiller system applies to try to
prevent the boat from yawing off course. Higher counter rudder settings result in more
rudder being applied.
Checking
To check the counter rudder setting:
1. Set
RESPONSE
to level
5
.
2. Motor your boat at cruising speed in clear water.
3. Press
auto
to switch the SPX-5 Tiller system to Auto mode, then make a 90°
course change:
• When gain and counter rudder are both set correctly, the boat performs a
smooth continuous turn with minimal overshoot
• If the counter rudder is too low, the boat will still overshoot
• If counter rudder is too high, the boat will ‘fight the turn’ and make a series of
short, sharp turns: this results in a very ‘mechanical’ feel as the boat changes
course.
Adjusting
To adjust the counter rudder:
1. Access the
COUNT RUD
screen in Dealer calibration.
2. Use the
-1
or
+1
keys to adjust the counter rudder.
New
heading
New
heading
A
New
heading
B
Correct
rudder gain
Rudder gain
too high
Rudder gain
too low
D3262-3
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