Chapter 4: Calibration
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4.3 Adjusting calibration
In calibration the Display key is used to scroll through the menu. The
displayed value is adjusted using the Response keys (hold down for fast
scroll).
Note:
If the 'CAL' display reappears at any time during calibration, press
Display to advance to the next menu level.
Once calibration has been carried out, further adjustment can be made at
any time.
Rudder Gain
Rudder Gain controls the amount of rudder the pilot will apply to turn onto
a new heading. A correctly set rudder gain will, for example, turns the
vessel crisply onto the new heading with an overshoot of no more than 2 to
5 degrees for a 40 degree course change. A high rudder gain setting will
result in oversteer, recognized as an overshoot of more than 5 degrees.
A rudder gain level that is too low will result in understeer giving poor
steering performance.
WARNING: It is most important that the rudder gain is correctly set
on planing craft. Incorrect adjustment will lead to poor steering
performance and is dangerous at high speeds.
The settings available are as follows:
Range 1 to 9
Recommended
setting
5 (Displacement)
5 (Semi displacement)
4 (Planing)
3 (Stern drive)
81004-17
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