couple of things I forgot to add last night.....
..... the alloy frame rudder holders bent at approx. 25 mm (25 mm just my gest )
if any had a rudder arm bend / toe in measurement would give me a start in trying to alignment...
What your looking at is the amount of 'bend' there is in the rudder case's arm .....
what you need to look at is slightly different tho.
draw an imaginary line through the centre of the rudder / pintle pin / & down the rudder case's arm, then measure from that line to the hinge pin on the cross-bar, that's the measurement your looking for. Most boats have different fittings that connect the rudder arms to the cross-bar, depending on that fitting type as to where the hinge is actually located.
There may only be about~25mm of bend in the tube but you need to add the fitting that lives in the gap between the arm and the cross-bar, its the hinge pin at that point that determins the amount of angle you have
The other one.....
Ackermann angle is usually measured in degrees and not in millimetres or inches....
but its easier to simply get the tape measure out and start adding up the numbers
Twice Shy has ~6.5 degrees of angle
