Re: rack and pinion vs rotary?
Racks are typically used when there is minimal clearance behind the helm mounting flat. The NFB 4.2 has been installed millions of times by builders all over the world, an excellent helm, but, of course, no where near hydraulic.
I've been building boats now for 16 years, Wellcraft/Aquasport, Hydra-sports, Intrepid, Stamas Yacht, Proline...probably have installed 2000 steering systems, mostly Teleflex Seastar, but a damn good bunch of NFBs...and not one rack and pinion. That should tell you something...go with the 4.2 NFB!