Raymarine Fluxgate Compass? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Electronics
 Not a Member? 
  #1  
Old 01-27-2011
Member
 
Join Date: Nov 2007
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
sapo is on a distinguished road
Raymarine Fluxgate Compass?

My autopilot won't correct properly for deviation, so I've bought a 'like new' fluxgate compass off e-bay, with hope that it will solve the problem. When this arrived it has a piece loose inside, that I can hear shifting when I (gently) shake it. Is this normal for these units, or a problem?
Thanks
el Sapo
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 01-27-2011
Senior Member
 
Join Date: May 2006
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
r.furborough is on a distinguished road
Raymarines fluxgate compass has a gimbled weight that rattles when shaken, this is normal. To test if the fluxgate is OK there is a simple resistance test.

Between the following cables measure the resistance, they should be

Red to Green: 4-10 ohms
Red to Yellow: 4-10 ohms
Green to Yellow: 8-10 ohms
Screen to Blue: 8-10 ohms
all other combinations are OC

When doing the circles to calibrate the compass, you need to turn cirles that take about 2 minutes to complete, choose a day that with very little wave action or wind and make the circles as near perfect as possible, you need a minimum of two circles but it can take more - Be patient

The location of the compass is very important, make sure it is not located near electrical cables or where tinned foods, drinks or cooking pots are located, this will change the magnewtic signature of the boat and make it difficult to calibrate.

Bob
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 01-28-2011
Member
 
Join Date: Nov 2007
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
sapo is on a distinguished road
Great response, thanks. I did my circles slow and as described, and it was unable to compensate for the deviation. The fluxgate was located close to the bilge pump, but when I removed the pump and re-ran the test, it still wouldn't come up OK. Will run the resistance test, on both units . . .
Thanks
Brian (el Sapo)
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 01-28-2011
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,449
Thanks: 0
Thanked 30 Times in 27 Posts
Rep Power: 12
Omatako will become famous soon enough
How far from your engine is the fluxgate?

If it is within a metre, the engine will present a different magnetic profile every time you run it that will influence the fluxgate.

I know this because I had mine located so and after buying a new one, it had to be moved to a new location where it is now perfect and I also have a working spare fluxgate.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 01-28-2011
Member
 
Join Date: Nov 2007
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
sapo is on a distinguished road
mine's about 10' from the engine, so . . .

how serious is it, to locate it close to the vessel centerline?

thanks
el sapo
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 02-06-2011
USCG 100T Master/Sail/Tow
 
Join Date: Apr 2002
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
sailndoug is on a distinguished road
I found this discussion and have the same problem. My seatrial calibration could not get past the first step. I went in a slow circle for 45 minutes. People must have thought the captain died at the wheel, ha! The screen never changed, just kept telling me to circle. After that long time I figured the system is locked up. How about it, any ideas? I'll call Raymarine tomorrow and see what they say but wanted to get "hands on" answers if possible. Thanks for any help!
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 02-07-2011
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,449
Thanks: 0
Thanked 30 Times in 27 Posts
Rep Power: 12
Omatako will become famous soon enough
The circling part of the calibration does take time and you have to be patient. The display will tell you if you're going too fast and if you maintain about a knot and a half you may have to to do two full circles before the system reacts.

Try it again and just keep at it. It will work. As long as the little circling arrows are still going, the system is still working.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 02-07-2011
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,449
Thanks: 0
Thanked 30 Times in 27 Posts
Rep Power: 12
Omatako will become famous soon enough
Quote:
Originally Posted by sapo View Post
mine's about 10' from the engine, so . . .

how serious is it, to locate it close to the vessel centerline?

thanks
el sapo
I don't believe that being close to the centreline is an issue. My fluxgate is about a foot off the centreline and works just fine.

10 feet from the engine is also OK. Mine isn't that far away now, it's about 6 feet.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 02-07-2011
Junior Member
 
Join Date: Apr 2008
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
BeachCruiser is on a distinguished road
Quote:
Originally Posted by sailndoug View Post
I found this discussion and have the same problem. My seatrial calibration could not get past the first step. I went in a slow circle for 45 minutes. People must have thought the captain died at the wheel, ha! The screen never changed, just kept telling me to circle. After that long time I figured the system is locked up. How about it, any ideas? I'll call Raymarine tomorrow and see what they say but wanted to get "hands on" answers if possible. Thanks for any help!
I just went through this with a friend on his boat. The fluxgate compass was DOA. Check the compass using the Raymarine's troubleshooting document. We replaced the fluxgate and it only took 2 circles to calibrate.

Barry
s/v Beach Cruiser
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 02-07-2011
Senior Member
 
Join Date: Oct 2009
Location: Cape Cod
Posts: 639
Thanks: 6
Thanked 21 Times in 21 Posts
Rep Power: 6
capecodda is on a distinguished road
I had a similar problem on a new installation of a Raymarine system. Root cause(s):

1. The compass was located by the builder near a deck wash pump.
2. The internal gimbal was broken (DOA).

We needed to replace and relocate, then everything worked fine.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Datamarine Fluxgate compass alternative? sailingdeac Gear & Maintenance 12 01-04-2014 08:47 PM
fluxgate compass replacement navico ph8000 autopilot joeledbetter SailNet FAQ 3 11-18-2010 03:44 PM
Newbie Impressions of Radar overlay (Raymarine c80) without electronic compass, etc. Northeaster Electronics 5 07-08-2009 09:43 AM
Fluxgate Compass bob77903 Electrical Systems 2 02-26-2009 05:43 AM
Location of fluxgate rate/gyro compass Pub911 Gear & Maintenance 13 04-28-2008 03:03 AM


All times are GMT -4. The time now is 06:00 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.