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Magnetic interference from mast affecting AP?
Ok. Before I waste a whole bunch of time troubleshooting I figured I ask if anyone every saw something similiar.
I have a CPT autopilot that last year was working awesomely. I went to use it this year (first trip of the year) and it's all screwy now.The only change from last year is that I have my mast down as I will be transiting the Erie canal shortly. It's strapped on deck.
Is it possible the mast is interfering to the point my autopilot doesn't work? The CPT's compass is in the control unit directly. I've tried moving it into every position I could reach in the cockpit and everywhere gives the same result. As soon as I turn on the "hold heading", it turns hard to port (like a good 1/4 turn of the steering wheel), and then keeps turning the wheel every second further to port until I'm clearly driving in a circle.
It will be a long trip if I can't use my autopilot :O