tie bar for twin rudders

When using twin rudders, where the rudder post is tilted both forward a little and inwards, what is the normal procedure for installing a tie-bar between them?

 

I found the easiest to fabricate is a u shaped joint with an axil threw the two sides and one down threw the centre. This allows up and down movement and rotation.This should align to any angle.

 

You can fabricate a universal joint as suggested by Bhnautica, or take the easy way out with a pair of Heim joints. These have a spherical element that rotates and tilts. They are available at your local bearing supply distributor. They are available in stainless too.

 

Ah yes - but that's not really the problem - if there is one at all...
If one rudder is actuated (hydraulic steering) and the other is simply turned by means of the tie-bar, then one rudder will turn more than the other, given that they the rudder posts are angled both in and forwards....

 

Sorry Willallison I misunderstood the question. Yes there is a small difference in the angle between the two rudders. This difference would depend on the distance the tie-bar was from the rotation point, the angle of the rudders to the vertical. Take for example two rudders at about 15 degrees to the vertical, 2 metres apart, with say the tie-bar about 650mm from the rotation point. Angle the rudders over to 30 degrees; the difference would be just less than 1 degree.