Thanks for the PDFs. Under the deck plate, the 'well' for the quadrant (for the 311 single
rudder) is much shallower than the fairly deep well under the deck plate for the 323. There is not enough vertical clearance to mount the rudder angle sensor in the 311. (Maybe someone has a more compact rudder sensor design?)
The ram wouldn't fit through the well wall either. That's why I decided on the wheel
pilot instead of the linear pilot.
Without the rudder sensor, my wheel pilot goes out of calibration - sometimes it will stay calibrated for half an hour or more. Sometimes it becomes uncalibrated within a couple of minutes depending on the wind/wave conditions.
I put it in (new) about three years ago. Has the newer gray plastic cover on the wheel pilot mechanism. For me, it is still better than nothing for solo sailing as it gives me time with both hands to do other things or go briefly into the cabin
. Would be much more useful, by a lot, with a compatible rudder sensor.