Hi Jake , Just checked the Raymarine ST4000plus manual on Stu's website under service manuals and see they reccommend:
Fluxgate sensor: 1) to minimize gimbal distrurbances be positioned as near as possible to the pitch and roll center of the boat. 2) positioned between .3 to .5 length of boat from aft 3) at least 2.5 ft from navigating compass 4) as far away from the engine as possible, within the above parameters. It sounds like your sensor may be too far aft and/or maybe too low, allowing the engine to break the snsor's ability to sense the earth's magnetic field? Can't promise anything but your system may work better if you move the fluxgate sensor? Chuck Resolute 1990 C&C 34R Atlantic City, NJ ----- Original Message ----- From: "Jake Brodersen" <captain_j...@cox.net> To: cnc-list@cnc-list.com Sent: Monday, March 25, 2013 9:06:51 PM Subject: Re: Stus-List Autopilots Chuck, I located the fluxgate in the aft portion of the quarterberth. There aren’t any other wires running close to it. Far enough from the engine and control panel too. It doesn’t malfunction often, but when it does you need to be there to correct it. Jake From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Chuck S Sent: Sunday, March 24, 2013 10:43 PM To: coltrek; cnc-list@cnc-list.com Subject: Re: Stus-List Autopilots I would suspect the fluxgate compass may be located in a bad place on the boat where it is affected by something metallic. Or maybe the wiring is experiencing a surge from a power source? Besides many hours of sailing and motoring a narrow ICW channel, I made at least seven 12 to 13 hour trips using our ST 4000plus and never experienced that problem. Six hours from Atlantic City to Cape May and six hours Cape May to Greenwich, NJ. Chuck Resolute 1990 C&C 34R Atlantic City, NJ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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