Wheel pilots - which one? - Page 2 - SailNet Community
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post #11 of 17 Old 07-29-2018
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Re: Wheel pilots - which one?

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It works for awhile then suddenly steers me way off course for no apparent reason. Iíve tried replacing the flux gate compass but it didnít fix the problem.
Close-hauled, following seas, or both?

Have you adjusted gain and response?

Did you calibrate by driving around in circles?

All these are things youíd need to do with a new autopilot.

Have you checked in at the Raymarine product support forum?

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post #12 of 17 Old 07-29-2018 Thread Starter
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Re: Wheel pilots - which one?

It happens under any conditions including perfectly flat seas motoring. It will run flawlessly for maybe a couple of hours. Then suddenly without warning will make a hard turn and go off course like 70 or 80 degrees. Yes I have done the go around in circles thing but still have the problem, no I have not been on any Raymarine forums, I didnít think I would get much support for a 25 year old wheel pilot, but maybe Iíll check it out. Iím at a point where Iím happy to just replace it, but was wondering if there were any pros or cons to consider between the previously mentioned models.

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post #13 of 17 Old 07-29-2018
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Re: Wheel pilots - which one?

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FYI, Iíve 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.
I have read about the ST4000. It appears to be a problematic unit. Even a decade ago people were replacing it. If it works for you no reason to replace it but if it gives you fits no reason to work too hard to get it running.

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post #14 of 17 Old 07-29-2018 Thread Starter
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Re: Wheel pilots - which one?

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I have read about the ST4000. It appears to be a problematic unit. Even a decade ago people were replacing it. If it works for you no reason to replace it but if it gives you fits no reason to work too hard to get it running.


Thatís pretty much what I was thinking. If all it needed was a belt then fine I would fix it but I think my issue is deeper than a simple fix. We went on a day sail today and I tried it in the wind vane mode and it was fine so it still has some usefulness, but I still want to replace it.


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Re: Wheel pilots - which one?

When it suddenly goes off course by 80 degrees, does the autopilot direction setting change to the new course? You really should post your issue on their support forum. Iíve never had a problem getting diagnostic help due to age of my instruments.

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post #16 of 17 Old 07-30-2018
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Re: Wheel pilots - which one?

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Originally Posted by timangiel View Post
It happens under any conditions including perfectly flat seas motoring. It will run flawlessly for maybe a couple of hours. Then suddenly without warning will make a hard turn and go off course like 70 or 80 degrees. Yes I have done the go around in circles thing but still have the problem, no I have not been on any Raymarine forums, I didnít think I would get much support for a 25 year old wheel pilot, but maybe Iíll check it out. Iím at a point where Iím happy to just replace it, but was wondering if there were any pros or cons to consider between the previously mentioned models.

Regards


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watching this post because I have the same issue with my ST4000.
It works fine for 1 hour or 2 then stops and the off course alarm goes off. Push stand by, then auto again it works for 10 seconds then stops. Hard to diagnose what the issue is, getting hot? The motor (drive unit) is fine.
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post #17 of 17 Old 07-31-2018 Thread Starter
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Re: Wheel pilots - which one?

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watching this post because I have the same issue with my ST4000.

It works fine for 1 hour or 2 then stops and the off course alarm goes off. Push stand by, then auto again it works for 10 seconds then stops. Hard to diagnose what the issue is, getting hot? The motor (drive unit) is fine.


You can still get a replacement flux gate compass but that doesnít sound like a compass issue. I thought I read somewhere that the newer drive units work with that control unit, but if youíre sure your drive unit is ok that wonít help you. If anything goes wrong with the control unit, you either can try to find a used one online and and take a chance or spring for a new wheel pilot. I believe my issue is in the control unit, and I have no interest in a used one. Let me know what you end up doing.


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