Autopilot and Rudder Position Sensor - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 09-19-2008
jbondy's Avatar
Senior Mumble
 
Join Date: Mar 2001
Posts: 320
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
jbondy is on a distinguished road
Autopilot and Rudder Position Sensor

I installed Raymarine's S1 Wheelpilot this year and have been having a problem with it as compared to the Autohelm 3000 it replaced. Pokey exhibits a good amount of weather helm, probably due to the 160 genoa. When sailing to a heading, the Autohelm, which did not have a rudder position sensor, would steer to that heading automaticallyy compensating for any weather helm. The S1, with a rudder position sensor, seems determined to keep the rudder straight rather than steering to compensate for the weather helm deviation. There is a setting on the S1 to tell it that it's in a sailboat, and that's how it is set. I had thought this was exactly the kind of thing that setting would be for. Does anyone know if this is a controllable aspect of the functioning of the S1?

TIA
Reply With Quote Share with Facebook
  #2  
Old 09-19-2008
Living & Cruising on Dana
 
Join Date: Apr 2006
Location: on my boat
Posts: 574
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Robby Barlow is on a distinguished road
Although I'm not sure how to explain this in English, or whether my line of thinking is correct or not, but my first impression is that the sensitivity of the self steering is set too 'tight', resulting in course adjustments being too vague, late & indirect. Try to set it for a quicker / more direct response as this may solve the problem.
__________________
Your pleasure is my business !!!
________________________
Reply With Quote Share with Facebook
  #3  
Old 09-19-2008
Junior Member
 
Join Date: Jul 2000
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
peter_ms is on a distinguished road
There should be a setup routine in the Operating Manual. As you go through this, it includes parameters like type of boat. If you dont have the manual you can download it from the Raymarine site. If all else fails, they have a 1800 help my busted ass Raymarine product number you can call while under sail from a cell phone and work out the details real time

I installed the S1 with rudder position sensor... It tracks ok given the tendency of my boat to round up under weatherhelm as well.
It wanders about 5 deg in flat water under motor as well.
Reply With Quote Share with Facebook
  #4  
Old 09-19-2008
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,411
Thanks: 0
Thanked 28 Times in 25 Posts
Rep Power: 12
Omatako will become famous soon enough
Sounds like calibration is required

I'm not sure what comparisons can be drawn between the wheel pilots and the under-deck hydraulic types (mine is a Raymarine ST6001) but mine has a calibration routine that has to be performed if the fluxgate gets messed with in any way. This routine (for mine anyway) can be found on the Raymarine website.

Not an informed thought but my take on the thing is that once the fluxgate is given a heading by the operator the AP will try to hold that heading until knows it can't and then an off-course alarm will be set off. I'm not sure that the rudder position sensor has any influence on this process.

Good Luck

Andre
Reply With Quote Share with Facebook
  #5  
Old 09-19-2008
trantor12020's Avatar
Senior Member
 
Join Date: Mar 2006
Location: Singapore
Posts: 674
Thanks: 2
Thanked 10 Times in 10 Posts
Rep Power: 9
trantor12020 is on a distinguished road
I kinda think the S1 is a great stuff (compared to my ST4000MKII) when I sailed on my friend's boat. I think its a matter of adjust to the right parameters which you have to try one at a time. Maybe you could set AP to Wind mode i.s.o. Bearing, that way it won't round up easily.
__________________
Ken
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fine-Tuning the Autopilot, Part Two Dan Neri Gear and Maintenance Articles 0 10-13-2003 08:00 PM
Emergency Steering John Kretschmer Seamanship Articles 0 03-08-2002 07:00 PM
Emergency Steering John Kretschmer Gear and Maintenance Articles 0 03-08-2002 07:00 PM
Emergency Steering John Kretschmer Cruising Articles 0 03-08-2002 07:00 PM


All times are GMT -4. The time now is 07:25 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.