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Rudder Angle at lock |
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Dogscout
Captain Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 161 |
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Posted: 09 January 2021 at 15:01 |
So I installed a new B&G NAC-3 Autopilot Controller and I was going through the setup and the computer needed the rudder angle at port and starboard lock position. Sure this is not too hard to assess when the boat is out of the water, but mine is in and I cannot see the rudder very well due to lots of debris in the water around me.
Just to get started I put in 45 deg. but I am hoping that someone out there knows what angle the rudder is at when at full lock to one side. If you know then please reply. otherwise I'll leave it at 45 until I get clearer and warmer water. |
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Arcadia
Rear Admiral Joined: 27 November 2017 Location: Sag Harbor, USA Status: Offline Points: 656 |
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It’s probably in the 30 to 35 degree range.
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Leon / ARCADIA
2018 Hanse 588 Sag Harbor, NY |
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Yeoey
Commander Joined: 22 August 2016 Location: Australia Status: Offline Points: 121 |
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good morning to you
On my 415, removal of the covering case over the rudder reveals the self steering components and the angle could be determined accurately by observation of the movement of the helm from side to side - perhaps it is the same on your 400? Peter
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Peter
Sea Rambler 415 # 137 |
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Dogscout
Captain Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 161 |
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Great Idea there Yeoey. I'll pull off the cover for the emergency tiller and take a look.
Edited: For the record, 2007 Hanse 430e. 35 degrees off center at full lock. Eyeballed with my nav protractor. Edited by Dogscout - 13 January 2021 at 15:44 |
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StavrosNZ
Rear Admiral Joined: 24 October 2014 Location: New Zealand Status: Offline Points: 556 |
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on my 2010 twin helm 400 its 35 deg, plotter/AP computer should tell you to turn the wheel lock to lock during the set up and will tell you what the angle is.
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Stephen
2010 H400 #691, Auckland, New Zealand |
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colinc
Captain Joined: 08 May 2019 Location: UK Status: Offline Points: 169 |
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It needs to correlate to the rudder angle sensor. So put it hard over and see what the sensor says. You can see the raw data in the network diagnostics part of the menus. |
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Mark_J1
Rear Admiral Joined: 12 March 2013 Location: Dover&Medway UK Status: Offline Points: 526 |
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You sure it doesn’t auto detect max rudder angles? Even my old AP25/AC10 setup does that as part of the ‘dockside’ setting process. Or have you maybe got a rudder angle sensor misbehaving and the NAC-3 thinks it’s operating without one?
Mark
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Hanse 400e "Grey Goose" Hull #31
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Dogscout
Captain Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 161 |
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During the setup for the NAC-3, the computer wants to know the rudder angle at full turn(lock) and you need to enter that angle to complete the setup process. It also asks you to center the helm, and to turn the wheel to each stopping point. This is all for the dockside setup and is likely for the calibration. I have not yet performed the sea trail setup and cannot until Greece lifts the lockdown restrictions.
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Mark_J1
Rear Admiral Joined: 12 March 2013 Location: Dover&Medway UK Status: Offline Points: 526 |
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That's curious, the NAC-3 Commissioning Manual suggests the Dockside rudder centre/rudder limits process is an automated action. Even warns you to keep clear while the wheel is spun. Setting rudder limits manually is part of the User settings area for tuning to suit conditions. Time to talk to Navico/Simrad/B&G?
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Hanse 400e "Grey Goose" Hull #31
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