Self steering for double wheels, can somebody help me out?

What is the state of the art?
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Thanks.

 

After looking at the link I realized "double wheels" in the thread title means two steering wheels.

Does "self steering" refer to an electronically controlled auto-pilot or a vane system?

 

Is the system mechanical or hydraulic?

 

Electronically controlled

Mechanical.

For implementation on for instance a Hanse 348.
With tillers it's easy, but how does it work with twin steering wheels?

It is not mentioned in the extra list, self steering,
http://hanseyachts.hr/media/filer_p...4a07-bdd6-1f8fd3d4729b/h34822_pl_20211130.pdf
Almost to a point it might be a messy job to install.
Just leave it that way.

 

Depends on how much power you have. If it uses a quadrant, you could install an all-electric servo on a second quadrant. For more power, the cleanest solution would be to extend the rudder head and attach a rotary actuator with feed back. Of course that will need a dump circuit for manual steering. Realistically though, both of those are not really 'self steering' as much as 'course holding'. A lot of processing is needed to keep a digital system at the correct angle to the wind.

 

The number of steering wheels has nothing to do with the autopilot drive. The drive (linear hydraulic/electric, electro-mechanical) connects to the ruddershaft via a short tiller, wich is either separate or integral to the quadrant.
Hanse uses Jeffa gear, I think the 348 has a rudderhead with quadrant and integral drive arm (it is welded to the quadrant) and is prepared for a Jeffa Direct Drive 1. The drive is compatible with several manufacturers brains, but its use is not mandatory.
Looks the same as this, only there is also a quadrant in the picture and not a second transfer bar. https://www.jefa.com/News/hanse/hanse.htm

 

That is exactly what I am looking for, thanks. And it's for holding course.

In my configuration I have two of those wheels and the actuator hidden above the steering shaft. I am able to have one of those two pedestals being rebuild to the control system. I'll start working on that. Thanks once again.