Compass Calibration

boatliker

Member
Joined
Jan 4, 2023
Messages
17
Fluid Motion Model
C-28
Vessel Name
Messin’ About
So, we’re trying to calibrate the Reactor 40 compass on our 2022 R27 OB and we can’t seem to get a quality value higher than 62. We’re attempting calibration in perfectly flat water with no wind or boat rocking. The boat is practically new and we haven’t added any components that would affect the magnetic field. Has anyone with an R27 OB achieved a calibration quality higher than 90? What’s the secret? Any recommendations will be greatly appreciated.
 
I had the same issue when i got my 27ob a few years ago. I installed a Garmin MSC 10 satellite compass. the one that comes with the boat must be getting interference from something. after using the MSC10 the autopilot could hold a straight line before it loved to do big s shapes.
 
Thanks for the feedback. I’m not crazy about breaking out another thousand when it’s something that should have been engineered properly to begin with. I wonder if moving the CCU would help.

On a related matter, if anyone with the R27 OB has run their own Sea Trial Wizard. I’m particularly interested in what settings you ended up with for Rudder Gain and Counter Rudder Gain. For that matter, I’d be interested un comparing my settings with anyone who’s willing to share. Garmin support recommended lowering my settings, but if someone with a 2022 is happy with their Auto Guidance performance, maybe I could try those settings w/o doing the full sea trial.

Thanks for any assistance.
 
My C30 CCU acts up on a pretty regular basis. On my trip south from Henry Island this past weekend, my boat was going in reverse on the chart plotter and my autopilot compass showed a heading of 263 degrees and my real compass showed a heading of 126 degrees (which was aligned with my bearing). I put it in dealer mode and adjusted the fine heading adjustment constantly to fix it for that leg of the trip, but I can't for the life of me figure out how this continues to go haywire. I am going to do the wizards again now that I'm back in fresh water for the winter and don't have currents and as much wind / waves to deal with to see if it fixes it. I have read that the CCU should not be near any wires that could cause interference, and i'm fairly certain this could be the case with mine as its near the inside helm in the crawl space.
 
We have had the same issue with our electronic compass so I called Garmin and they told me all electronics need to be 2 feet from the electronic compass and mine is maybe 3 inches. So I guess I live with it.
 
2022, Ranger Tug, R-31, I am having issues with my Garmin Auto Pilot. When I checked the Auto Pilot for magnetic interference I got a reading of 47 out of 100. Additionally, I have had instances where on engaging the Auto Pilot we do donuts.

Has anyone performed the Auto Pilot Calibration and if so which calibration did you perform? I am thinking
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://static.garmin.com/pumac/Reactor_40_Hydraulic_Models_Configuration_Guide_EN.pdf

Has anyone relocated the Heading Sensor? And where is the sensor located?

Has anyone tried a Ferrite Choke?
https://support.garmin.com/en-US/?faq=R ... MGVHYE8Uk8
 
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