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Simrad AP16 Autopilot - strange behavior

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toholthe View Drop Down
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Joined: 20 September 2017
Location: Norway
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    Posted: 06 May 2018 at 21:31

Hi,

My autopilot is not able to keep the boat on a straight track. I suddenly make a hard turn probably 10-20 deg, and then gets back on track. This happens every couple of minutes.

I can see on the chartplotter Simrad NSE8 that there is a difference between the COG and Heading at some courses, maybe 10-15 deg or more. Is it only current/drift that will make a difference between COG and Heading? Where i sail in Norway it is not much current, so this might be the cause for the autopilot problem?

I recently moved the bow thruster battery from the position under the chair in the saloon to the just beside the thruster. Maybe this is the reason for the strange behavior?

I checked that there is nothing magnetic close to the compass, so this should not be the problem.

Do you think I need to do the “seatrail setup” on the autopilot again? Is this the reason for the odd behavior?




Edited by toholthe - 06 May 2018 at 21:32
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toholthe View Drop Down
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Joined: 20 September 2017
Location: Norway
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Points: 26
Post Options Post Options   Thanks (0) Thanks(0)   Quote toholthe Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 2018 at 22:12
I was out testing today. I believe my rudder feedback unit reports faulty values in some split seconds making the boat turn. Anyone know if it is serviceable?
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