David, The shaft of the 34/36 is on centerline. Propwash causes the problem you are experiencing. This is normal. BTW, propwash is caused by the shaft's downward angle. Saildrives and horizontal shafts have zero propwash. On our boat, the pull is half a spoke at full speed, but it doesn't take much effort to hold that. Two fingers at most. The autohelm motor should adjust the helm to steer that course and idle off, so no power being consumed until the course changes.
I just installed a Raymarine EV-100 and found several differences from the ST4000. It's all in the instructions. Check your wire size to be sure you haven't used too small a wire that could cause voltage drop. The round trip distance between your power source and the device determine voltage drop. My power run from the breaker to my ACU is 20 feet. That's a forty foot circuit. The fuse in the ACU is 10amps. I ran 12 gauge wire, but some tables indicate 8 gauge so I may be undersized? The book calls for an 8 gauge ground drain if the nearest ground point is more than 3 feet. i plan to test my system this way and if I see problems upgrade wire sizes. Chuck Resolute 1990 C&C 34R Broad Creek, Magothy River, Md ----- Original Message ----- From: "David Knecht via CnC-List" <[email protected]> To: "CnC CnC discussion list" <[email protected]> Cc: "David Knecht" <[email protected]> Sent: Wednesday, August 26, 2015 2:18:42 PM Subject: Re: Stus-List Autopilot steering Hi Bill- I am not sure about the offset. I did not realize that it was a possibility. I will have to check this winter when on the hard. I have a vague recollection of it not being straight relative to the axis of the boat and that might be why. If so, I guess that would explain the pull. Dave Aries 1990 C&C 34+ New London, CT On Aug 26, 2015, at 2:02 PM, Bill Coleman via CnC-List < [email protected] > wrote: Is your prop shaft offset so it can be removed past the rudder? Bill Coleman C&C 39 From: CnC-List [ mailto:[email protected] ] On Behalf Of David Knecht via CnC-List Sent: Wednesday, August 26, 2015 1:44 PM To: CnC CnC discussion list Cc: David Knecht Subject: Re: Stus-List Autopilot steering Calling Raymarine was my first action and I am waiting for a call back. But what I really want to know from the group is whether the relatively strong pull to port while motoring is normal or whether neutral helm is normal. Dave Aries 1990 C&C 34+ New London, CT <image001.png> <blockquote> On Aug 26, 2015, at 1:03 PM, David via CnC-List < [email protected] > wrote: yep...call Raymarine David F. Risch (401) 419-4650 (cell) Date: Wed, 26 Aug 2015 12:52:24 -0400 To: [email protected] Subject: Re: Stus-List Autopilot steering From: [email protected] CC: [email protected] No- It is smooth by hand. No stiffness I have noticed. Aries 1990 C&C 34+ New London, CT <pastedGraphic.tiff> <blockquote> On Aug 26, 2015, at 12:50 PM, David via CnC-List < [email protected] > wrote: Does the steering hang up at all when the autopilot is disengaged? David F. Risch 1981 40-2 (401) 419-4650 (cell) Date: Wed, 26 Aug 2015 12:04:11 -0400 To: [email protected] Subject: Stus-List Autopilot steering From: [email protected] CC: [email protected] I was on a long cruise last weekend and we ended up motoring for many hours. installed a new Raymarine EV1/ST4000+ wheel pilot last winter and this was the first extended use. I found that it was frequently cutting out while motoring (not sailing). The unit would simply freeze up and stop steering while the boat drifted slowly off course. No error on the P70 controller screen until I got an off course warning. I also noticed the wheel pilot getting warm/hot when this was happening which may be why it cut out. I also notice that while motoring, there is significant pull on the wheel that has to be fought to keep the boat going straight. Is that normal? I am guessing that the wheel pilot is overheating due to the power needed to continuously fight that pull? Thanks- Dave Aries 1990 C&C 34+ New London, CT <pastedGraphic.tiff> _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com </blockquote> _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com </blockquote> _______________________________________________ Email address: [email protected] To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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