so back in 2010 we bought this autopilot
from the guy who complained about it making zigzags or loosing control completely. It worked absolutely perfectly the first year.
Last spring we extended aft for around 1.4 meters (see the picture). After it, the autopilot
I tried experimenting with various combinations of 'steering wheel
turn' settings (the only knob on the Autohelm) and adjusting the actual turns (i'm not sure how to express myself, but there's plate on rudder
post where you can switch the cable between several holes, which will increase the radius and travel of the rudder). That didn't help.
My first guess was the rudder
was too small for the increased hull
length, so we cut a new solid piece of steel
and attached instead of the old one. We made the rudder a bit more balanced, for easier handling. That didn't help.
This year, we guessed that the solid piece might be bending due to the force of water
flow, so we welded horizontal lines running along the rudder. That didn't help.
has no calibration settings or anything. It's really simple piece of hardware
and we loved how it worked the first year. Now, sometimes it gets so out of touch, that it will turn the boat 360 and continue zigzagging.
guess is either something really changed after our boat conversion (personally I feel the steering
response slower) or something happened to Autohelm
during long, cold (-20) winter. Perhaps the 'fluxgate' compass
got damaged? Or was it just standing in the same position for too long?
Perhaps you will have some ideas