Counter Rudder; Checking; Adjusting - Raymarine SmartPilot X5 Installation & Setup Manual

42
• 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.
SmartPilot X-5 Tiller & GP Tiller Installation & Setup Guide
heading
Rudder gain
too low
Rudder gain
too high
New
B
New
heading
A
Correct
rudder gain
New
heading
D3262-3