The original Whitby 42 came with Hynautic (now Teleflex) hydraulic steering. This was a good system at the time and continues to give good service. My only issue with it was the complete lack of feedback.
I had not decided on the steering decision as of last week. The short list was;
1. Hydrive (Australian company) - A hydraulic system with feedback.
2. Jefa steering system - both rod and pull/pull.
3. Edson Pull/Pull.
Edson had already designed a Pull/Pull system for the Whitby 42 and I suspect that a version of this system was installed on the Brewer 12.8 (the redesigned W42).
Unfortunately, parts of Edson design will not fit on TIH (e.g. I have only room for a 10" quadrant). I have e-mailed Edson with a list of questions but do date have not received an answer. (Correction----a 12" quadrant fits!!!!)
In any event the I will now be installing an Edson Pull/Pull system.