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Autopilot 575

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Gale Force View Drop Down
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Joined: 26 June 2018
Location: Sri Lanka
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Topic: Autopilot 575
    Posted: 16 January 2020 at 09:13
Dear All
Can anyone explain to me the workings of the 575 autopilot system.I have the following questions
What make is the system?
Where do I find the parts to the system e.g. motors, cpu, fuses etc and where does it connect to the rudder or steering system?
Can it jam and if so how to unjam?
What to do in an emergency if it jams?
What faults I could expect from it

Any info would be great for at present I am clueless

Happy Sailing

Duncan

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SVZara View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SVZara Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2020 at 02:27
Hanses uses the B+G line of autopilots.  I am not sure the answer to all your questions, but from looking at their website it should give you an idea:

https://www.bandg.com/bg/type/autopilots/



Edited by SVZara - 05 February 2020 at 02:27
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2020 at 03:59
Hi guys.  B and G make only the computer (NAC-2 or NAC-3). The rest of the system including the steering is by Jefa. It is uses cable from the wheels to gear boxes near the rudder post. That is where the drive motor for the autopilot is. From the gear boxes, there are rods that push and pull on the tiller arms on the rudder post.  This arrangement is not prone to jamming since the steering is very separate from the drive motor. Also, the drive motor clutch completely disengages the drive gears when power is removed when on standby. Overall the system is very reliable and strong. Hope this helps.
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2020 at 04:11
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Gale Force View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2020 at 06:06
Hi
Many thanks for the replies which were very informative.
Maybe Leon you can tell me how to access the drive unit and gear boxes (location).I have had my 575 for two years and I am trying to learn and understand as much as I can about the systems on board.

Best regards

Duncan
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2020 at 14:13
Duncan, the drive motor is accessed from the aft cabins from both sides. There is a small door on the inboard wall near the back. The gear boxes can be reached through the garage hatches on both sides although itís pretty tight in there. 
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 06 February 2020 at 19:02
Duncan and Leon,

Access to the steering gear box etc is probably easier through the aft bulkhead of the stern cabins. The vinyl covers on the aft bulkhead are velcroed in place, pull these off and there is a hatch behind them with a press latch (like on all the cupboards). You can squeeze into the steering flat to get access to the steering cables and chains and the steering gearboxes. You can also get to the deckshower fittings on the port side and the duckboard hydraulics on the stbd side. You can check the steering by just putting your head into the access hole. I gather the 588 is different because it has the deck hatches and storage which intrudes into this space on the 575 there is just empty space. 
Wayne W
Cruising, currently in the Caribbean and will head across the Pacific early 2023
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Black Diamond View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Black Diamond Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2020 at 03:41
The aft bulkhead of the stern cabin is also where you check the cable's for the steering system.  A useful opening.

I've often thought there are other uses for all that space back there (the void), but you need to be a very thin alien with pliers for fingers to install things there. 
Rick
S/V Black Diamond
Hanse 575 Build #192, Hull# 161
Newport, RI
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Gale Force View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2020 at 08:25
Hi Rick,Wayne

Thanks for your input.I am going exploring when i am next on Gale Force in a couple of weeks time

Best regards

Duncan
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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2020 at 18:30
Rick, Duncan,
On the way across the Atlantic I had to get partly in the stbd side of this void to adjust the tension of the auto pilot drive motor chain whilst we were sailing and on AP. Escaped with all fingers and toes but only just. Not an area offering easy access but I have been in worse.  

Wayne W
Cruising, currently in the Caribbean and will head across the Pacific early 2023
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