Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-08-2016, 11:38   #1
Registered User
 
the_alpine's Avatar

Join Date: Dec 2011
Location: st petersburg, fl
Boat: O'Day 302
Posts: 260
Raymarine AP slowly drifting 1 direction

So my RM wheel pilot has started slowly drifting to port. I've recalibrated it twice, but that does not seem to help.

The compass heading is correct, but when I engage pilot it constantly slowly veers off course. Would prob complete a loop if I left it?

I did notice the rudder indicator on the control head indicates a good amount of starboard rudder (no rudder ref is fitted and the wheel is actually slightly to port).

Any thoughts?
__________________

__________________
the_alpine is offline   Reply With Quote
Old 03-08-2016, 18:50   #2
Registered User
 
TheOffice's Avatar

Join Date: Jun 2012
Location: Annapolis
Boat: Hylas 44
Posts: 445
Re: Raymarine AP slowly drifting 1 direction

Did you put any metal near the fluxgate? If not I'd guess it is failing but I would use the Ray forum to get an answer


Sent from my iPhone using Cruisers Sailing Forum
__________________

__________________
TheOffice is offline   Reply With Quote
Old 03-08-2016, 20:48   #3
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in the Caribbean
Boat: Beneteau 393 "Sea Life"
Posts: 12,569
Images: 25
Re: Raymarine AP slowly drifting 1 direction

Yep, check what junk youve put next to the Fluxgate.
__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 03-08-2016, 21:03   #4
Registered User
 
the_alpine's Avatar

Join Date: Dec 2011
Location: st petersburg, fl
Boat: O'Day 302
Posts: 260
Re: Raymarine AP slowly drifting 1 direction

Flux gate is the same as its been for 5 years.

Only difference is I did add a NMEA to wifi box, which is within 5' or so.
__________________
the_alpine is offline   Reply With Quote
Old 04-08-2016, 01:45   #5
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 1,184
Images: 1
Re: Raymarine AP slowly drifting 1 direction

Quote:
Originally Posted by the_alpine View Post
So my RM wheel pilot has started slowly drifting to port. I've recalibrated it twice, but that does not seem to help.

The compass heading is correct, but when I engage pilot it constantly slowly veers off course. Would prob complete a loop if I left it?

I did notice the rudder indicator on the control head indicates a good amount of starboard rudder (no rudder ref is fitted and the wheel is actually slightly to port).

Any thoughts?
If you have no rudder ref. sender,how does the control head indicate stbd rudder?
Have you tried increasing the rudder (yaw) control?
/ Len
__________________
My personal experience & humble opinions-feel free to ignore both
deblen is offline   Reply With Quote
Old 04-08-2016, 03:19   #6
Registered User

Join Date: Oct 2009
Posts: 127
Re: Raymarine AP slowly drifting 1 direction

You mentioned the WiFi box added just prior to this issue started. Could you disconnect the WiFi temporarily to verify this has nothing to do with the issue? Shouldn't have anything to do with it, but stranger things have happened. Should be easy and doesn't cost you anything.

Sent from my SM-N920V using Cruisers Sailing Forum mobile app
__________________
gulfstar37 is offline   Reply With Quote
Old 04-08-2016, 08:53   #7
Registered User

Join Date: Jul 2012
Posts: 55
Re: Raymarine AP slowly drifting 1 direction

I had the same problem with a raymarine ST4000. Kept on turning to Port and at the same time showing that it was going off course. Eventually the off-course alarm would go off but it would continue to turn to port. So it knew it was wrong but kept doing it. It never did it early in the season and some guy told me that something in the control head was overheating (probably the boost transitors). Anyway I could get a second hand control head of dubious quality or invest in a new autopilot - I did the latter.
__________________
Nadezhda is offline   Reply With Quote
Old 04-08-2016, 09:04   #8
Senior Cruiser

Cruisers Forum Supporter

Join Date: Dec 2013
Boat: Jeanneau 54 DS
Posts: 71
Re: Raymarine AP slowly drifting 1 direction

I have heard of people who put metal objects in the lazarette in the cockpit and found that affected the autopilot. Rick Moore had a segment on his youtube channel about that.
Chex out all those lockers.
__________________
bjymd is offline   Reply With Quote
Old 04-08-2016, 09:38   #9
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in the Caribbean
Boat: Beneteau 393 "Sea Life"
Posts: 12,569
Images: 25
Re: Raymarine AP slowly drifting 1 direction

Quote:
Originally Posted by the_alpine View Post
Flux gate is the same as its been for 5 years.

Only difference is I did add a NMEA to wifi box, which is within 5' or so.

Turn the bloody thing off and test again!


My fluxgate is in a wardrobe: Sure, like, really, really sure you havent put a metal clip from a safety harness near yours? Really, sure? Have you looked? Really looked?

Friends of mine in the Pacific upon leaving Panama, same time as me, started going in circles. Wifey said "what about stuff near the Fluxgate?" Husband said "Get back to the kitchen, Bozo"
For 2 days he refused to look as they went in circles. Circles in the ocean!
2 Dayys!!!! I was 2 days ahead of them by this time.

2 days before he looked and removed the new spare alternator that he stored next to the fluxgate compass.

So check
__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 04-08-2016, 09:42   #10
Registered User

Join Date: Aug 2015
Posts: 86
Re: Raymarine AP slowly drifting 1 direction

Same problem and the end result was a new fluxgate compass. All solved. Metallic/magnetic stuff is usually obvious and if not there, then I suspect it will be the compass.
__________________
out42 is offline   Reply With Quote
Old 04-08-2016, 10:52   #11
Registered User

Join Date: May 2016
Location: Currenty in Hurghada, Egypt...Boat is in the US though
Boat: 81 Hunter Cherubini 27
Posts: 265
Re: Raymarine AP slowly drifting 1 direction

In a previous post, the OP stated that all worked well until he added WiFi. WiFi is a radio signal in the 2.4 Ghz range (UHF) and around the 5 Ghz range (SHF). These are elecromagnetic frequencies being constantly emitted from a sending unit. Fluxgate compasses are, unless fully protected from outside interference, are susceptible to electromagnetic interference. Disconnect the WiFi (as has previously been suggested here) and test the system again.

Remember one day sailing the Ches Bay years ago on a friend's boat while on AP. Friend got a call on his cellular phone and the AP took a automatic 90-turn to port! Once the phone call ended, AP worked just fine. Dude calls his wife....and 90-degrees to port we go again.

So, fluxgate compasses are susceptible to RF interference.

MarkJ mentioned alternators, additionally a faulty voltage regulator can also emit an RF signal (I know when a taxi passing my flat here in Egypt has a faulty regulator....if I am watching local channels my satellite signal is disrupted).
__________________
Teknishn is online now   Reply With Quote
Old 04-08-2016, 19:44   #12
Senior Cruiser
 
Symphony's Avatar

Cruisers Forum Supporter

Join Date: Jul 2011
Location: Ct
Boat: Tartan 4100
Posts: 374
Re: Raymarine AP slowly drifting 1 direction

1) calibrate the system again. if it still has the problem, calibrate it again. the Calibration Wizard makes it easy.
2) If no metal by the fluxgate, I am betting something wrong with rudder position indicator (from my ample experience).
3) Raymarine Forums are quite useless. Unsupported by the company. Useless is actually too positive a descriptor for the Raymarine forums. You'll get no support until you telephone Raymarine and wait in line. then you'll get good tech support.
__________________
Symphony
Tartan 4100
Symphony is offline   Reply With Quote
Old 05-08-2016, 08:18   #13
Registered User

Join Date: May 2007
Posts: 6
Re: Raymarine AP slowly drifting 1 direction

Check to see if your drive belt is occasionally slipping in one direction. You can hear it. If so, try increasing tension or get new belt if needed.
__________________
CHRISBENJES is offline   Reply With Quote
Old 05-08-2016, 10:31   #14
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 1,298
Images: 7
Re: Raymarine AP slowly drifting 1 direction

I now have a problem with my Raymarine autopilot wandering about after I replaced my solar panels for larger capacity ones. The extra current through the cabling, which runs fairly close to the wiring for the fluxgate and past the fluxgate itself is sufficient to generate a magnetic field which causes the autopilot to wander about as clouds vary the current output from the panels. I'll get around to moving the fluxgate to fix the problem one of these days.
__________________
RaymondR is offline   Reply With Quote
Old 05-08-2016, 11:50   #15
Registered User
 
Marksman's Avatar

Join Date: Apr 2009
Location: Kingston, Wa.
Boat: 1966 Buchan 37
Posts: 300
Re: Raymarine AP slowly drifting 1 direction

I had the same problem with my 5000. Compass display is correct, off coarse alarm, yadda yadda yaddy.Tried everything no results. Finally removed all the connectors off the back of the control unit and slid them back on several times. This fixed it. They didn't appear corroded or dirty but as a last resort it was the only thing left to do. I can't explain it but that's what worked and is still working. Hope this helps.
__________________

__________________
Fred Guy
Maelstrom
Marksman is offline   Reply With Quote
Reply

Tags
marine, raymarine

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hydraulic Steering Drifting idpnd Construction, Maintenance & Refit 4 06-05-2011 03:00
Just Drifting In... JustDrifting Meets & Greets 2 18-06-2009 20:00
Drifting on in Intentional Drifter Meets & Greets 11 24-04-2006 14:58
Earth's Magnetic Pole Drifting Quickly CaptainK Polar Regions 0 09-12-2005 23:59


Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:17.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.