Join Date: Oct 2009
Location: Swarthmore, PA
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Re: Wheel pilots - which one?
I have an old ST4000 autohelm connected to seatalk that I would like to replace. I see Raymarine x-5’s and EV-100’s. I don’t know much about auto pilots, they both look
the same to me, can someone offer any insight as to the difference between them or why you would choose one over the other?
Why do you want to replace it? Is it broken? If broken, is it the control head or drive unit? If it’s slipping, it might just need a simple adjustment or internal cleaning. New belts are discontinued by Raymarine, but readily available from 3rd parties on ebay. The newer gray drive units first came out with the ST4000+MkII, but work fine with the original ST4000 control heads. They’re quieter and more simple/reliable than the older black belt-driven drive rings. I believe the gray drive rings are the same as used on the current wheel drive models.
Figure out what’s wrong first before you buy new. It might be simple to fix.
FYI, I’ve owned both the ST4000+MkII (on prior boat) and ST4000 (on current boat). MkII was nicer than ST4000, but not enough to justify upgrading my current one. A new $20 belt fixed all my problems.
Rick S., Swarthmore, PA
USCG Certified Captain, OUPV and 50 Ton Master
ASA Certified 101/103/104/105/106
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2001 Catalina 34MkII Tall Rig Wing Keel Breakin' Away, Universal Diesel M35B, Mantus 35 lb. anchor, sailing out of Rock Hall Landing Marina
Last edited by TakeFive; 07-29-2018 at 12:22 PM.