Ray/M Tiller Pilot fails when connected to Windvane.

Aug 29, 2015
1
Hans Christian 37 Greece
Hi all, Have been an avid reader of this site for years and have solved many an issue by reading the forum, but today I have had to post my first question, in the hope of working out what a solution to what should have been a simple fix ! We have a rather heavy vessel for a tiller (37' and 10 metric tons), however it's quite well balanced and she sails well on all points. Having said that, hanging onto the tiller all day when it's just a breeze (we are in the med...so either a gale or becalmed dde01) and the windvane will no work is not fun either. So, after much reading and thinking I saw that one could connect a tiller pilot to the windvane and so the issue of having such a heavy displacement vessel with a tiller, and no tiller pilots on the market that would handle the direct loads was solved....so I installed the Raymarine ST 4000 and connected to the Fleming windvane...see photo. Unfortunately, despite reading the book backwards and searching the web, I can't work out why the system continues to not learn... I repeatedly get a message that says..."fail 1" after a short learning attempt...and yes, the boat does enter a turn as the ram extents or contracts. Have changed the setting and retried the learning process with the system programmed to .. Workboat, sailboat, displacement boat... And no luck. The pilot system was set up without issue through the other startup processes..like setting the compass etc. Has anyone had this issue and found a solution ? Or any ideas ? Thanks in advance.
 

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Jan 22, 2008
1
West Wight Potter P19 Camas WA
That is clever, using a tiller pilot attached inplace of your windvane.
I have two versions of the autohelm-800 and they have a Standby mode and a Auto mode. No matter what compass angle your pointed, that will be the referance point that Auto will try to steer you back to. If it Auto steers in the opposite direction, there is a multi button press to switch the action, or you can open the box and swap the motor wires.
I would think your tiller pilot would do the same thing?
 
Sep 29, 2008
1,976
Catalina 310 #185 Quantico
You mention you have a Fleming Windvane. Does the Fleming use the Seatalk protocol? I have the S1 Wheel and the ST60 Wind Instrument and both are Raymarine and they work great, but both talk Seatalk. Hans Christians are beautiful boats we used to have a 37 in Quantico.
 
Dec 2, 2003
766
Hunter 260 winnipeg, Manitoba
Are you sure its an st4000? I can't find mention of a learning procedure in either the st4000 or st4000+ manuals. - My st4000 has compass calibration but not learning. Do you have any other raymarine instruments connected to the autopilot? if so it could be a failure in the sea talk. It could also be the connection to the wind vane doesn't allow the ram to extend/retract far enough to function properly. From your photo it looks like the drive could only extend/retract a few inches. Perhaps a longer lever arm attached to the wind vane tube? (The manual lists an 18" measurement from the centre of the rudder post (or you wind vane tube in this case) to the pin that the actuator attaches to as the critical measurement for the lever arm.)