instructions specify a relatively short link rod to connect the RF-300 to the steering
quadrant, with the RF-300's axis coincidental with that of the rudderpost. The instructions look like they were composed with power boats in mind. My Jeanneau
SO40 has a large-diameter quadrant that makes following the Simrad
instructions difficult, if not impossible.
ST-6000/AP100 system being retired uses a much longer (say, 50%) connection rod and does not have a coincidental axis due to access issues. I haven't gone through the measurement and math process, but this linkage appears to cause a reasonably linear relationship between the quadrant and the feedback arm.
It seems to me that I should just duplicate the (successful) Raymarine
scheme - mount the RF-300 in a similar location and obtain a longer threaded rod from the usual supplier.
Has anyone else been down this road?