Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-07-2011, 07:46   #1
Registered User

Join Date: Mar 2011
Location: Maine
Boat: Irwin Citation 34
Posts: 137
Challenge: Autopilot Drive Wrecks Compass Direction

Sorry if this has been addressed before. I searched for several hours trying to find a thread that addressed this problem. My awesome Raymarine Wheel Pilot motor, mounted on the pedestal, throws my pedestal compass off by 11 degrees. I can't rely on my fluxgate compass, that would require having the auto pilot system on all the time, a heavy load on my feeble battery capacity. As this effect is there with the system on or off, my options seem to be relocate the compass or shielding the motor somehow. There is an additional option to adjust the compass but that is something, for me, that poses many questions: Though the magnetic interference source would be fixed and stable, would adjusting the compass to compensate mess with it as the boat turned ? The shielding would be an ugly mess, the relocation to the bulkhead would be a new hole, new wires, and inconvenient location, and the hole in the pedestal. All bad solutions. Help me sort this one out guys...
__________________

__________________
TomandAnitas34 is offline   Reply With Quote
Old 30-07-2011, 19:39   #2
Registered User

Join Date: Dec 2008
Location: ontario canada
Boat: grampian 26
Posts: 1,743
Re: Autopilot Drive Wrecks Compass Direction

Install a new compass away from all the bad influences.
__________________

__________________
perchance is offline   Reply With Quote
Old 30-07-2011, 20:08   #3
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,775
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Autopilot Drive Wrecks Compass Direction

can you place a protective plate of some kind between the autohelm and the compass or place a spacer there to relocate your compass farther from the autohelm drive????
zeehag is offline   Reply With Quote
Old 30-07-2011, 21:42   #4
Senior Cruiser
 
FSMike's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Bahamas/Florida
Boat: Solaris Sunstar 36' catamaran
Posts: 2,654
Images: 5
Re: Autopilot Drive Wrecks Compass Direction

Get a professional to swing the compass. They will compensate for all degrees of the compass. Or, if that's not possible for some reason, they will at least know what to try.
__________________
Sail Fast Live Slow
FSMike is offline   Reply With Quote
Old 30-07-2011, 21:51   #5
Registered User

Join Date: Mar 2011
Location: Maine
Boat: Irwin Citation 34
Posts: 137
Re: Autopilot Drive Wrecks Compass Direction

Hi Zee, Nice to see you ! As I'm in the middle of rebuilding the whole boat I guess I could do just about anything. I know there are about 10,000 boats out there with the same drive I have, that also have a compass on the pedestal. Someone, somewhere, has addressed this problem. I just cannot believe all those guys and gals just IGNORE the fact that their compass is completely twisted by the magnets in the drive ! I have not "tried" anything yet as I'm busy installing the new cabin interior. I just was hoping someone who has dealt with this would stop by and comment something like " Yeah, you fix it this way... or Nope, gotta move the compass..." The compass seems to have a two foot distance to eliminate the magnetic interference. I guess the next thing is to bend up some sheet metal to see if it helps. It would be a lot better to have the compass on the pedestal where I can see it, rather than 8 feet away on the bulkhead. My best to you Zee, and enjoy your adventure out there !
__________________
TomandAnitas34 is offline   Reply With Quote
Old 30-07-2011, 21:54   #6
Registered User

Join Date: Mar 2011
Location: Maine
Boat: Irwin Citation 34
Posts: 137
Re: Autopilot Drive Wrecks Compass Direction

Hi Mike, so it can be adjusted for...
__________________

__________________
TomandAnitas34 is offline   Reply With Quote
Reply

Tags
autopilot, compass

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
Route Properties, Missing Functions James Baines OpenCPN 13 13-07-2011 05:31



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:23.


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.