Is it possible that your GPS is set to show True heading, while the fluxgate is showing Magnetic? Ten degrees west variation is probably about right, depending on where you are in PA.
Rick Brass Washington, NC -----Original Message----- From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Bill Coleman via CnC-List Sent: Saturday, July 09, 2016 3:07 PM To: cnc-list@cnc-list.com Cc: Bill Coleman <colt...@verizon.net> Subject: Stus-List ST4000+ WheelPilot heading Calibration I have just done my turns to calibrate my fluxgate, and when I correct it down 10 degrees to agree with my GPS heading shown on my i70 Display, that heading drops 10 degrees. So between the two of them, I am always 10 degrees off. I think I am now around 40 degrees low, by the time I figured what was going on. Has this happened to anyone else, and if so does anyone know what is going on? I assumed the heading shown on the i70 was coming from my e95 plotters GPS heading. If it is actually coming from my fluxgate, why would the two be 10 degrees off? Puzzled in PA, Bill Coleman C&C 39 Erie, PA _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated! _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!