Calabration of raymarine ev100 autopilot

Mar 27, 2016
89
Catalina 30 Hingham
Just installed a raymarine ev100 autopilot on my Catalina 30. Does anyone know how to do the calabration and setup for this . It doesn't come with the greatest directions
 
Mar 27, 2016
89
Catalina 30 Hingham
It is the P70 . With no rudder reference. I'm not sure how to get the rudder limit setting or hard over time . Or if I should set it for leisure, cruising or performance
 
Aug 1, 2011
3,972
Catalina 270 255 Wabamun. Welcome to the marina
The good news is that it's infinitely adjustable. Since you have no idea how this particular unit will make the boat perform, pick the middle settings and run through the calibration. Chances are the AP will probably perform best in the mid or upper settings. Mine is set to Race, and of the 5 levels of adjustment on the p70, it's usually at the lower end, most often at 2. This offers the flexibility to wind the thing up to be really responsive if asked, and dialed back so as to not be making adjustments every 20 milliseconds if cruising.
If the settings don't work well for you, or your style of sailing, change it. Start in the middle and go from there.....
 
Aug 1, 2011
3,972
Catalina 270 255 Wabamun. Welcome to the marina
The calibration will deal with the rudder. Not as well as a reference input would, but the only time it's a real pain is downwind with a nasty following sea.
 
Jul 14, 2015
840
Catalina 30 Stillhouse Hollow Marina
Performance and slow turn. Otherwise it wanders too much
 
Mar 11, 2015
357
Hunter 33.5 Tacoma, WA
Not as well as a reference input would, but the only time it's a real pain is downwind with a nasty following sea.
Everyone seems to agree that having a rudder reference unit is best. Why in the world would you NOT install one when CLEARLY it is a safety issue in a "nasty following sea"? This is when you REALLY need your AP to work, and work perfectly.
 
Aug 1, 2011
3,972
Catalina 270 255 Wabamun. Welcome to the marina
How about when 90% of you time is spent on shallow inland lakes that boast a weather advisory when the waves get around 3 feet?
Personally, I thought about one and passed.
 
Mar 11, 2015
357
Hunter 33.5 Tacoma, WA
Personally, I thought about one and passed.
There will come a time... Maybe you made a poor decision and thought everything would be OK, but now you are stuck in dangerous conditions. It happens to everyone who is serious about this sport. Maybe you need to make an adjustment on the mast, leave the cockpit momentarily, and suddenly the AP loses it's track. The boat wildly swings, stuff falls, your passengers panic. They look at you with wonderment and silently lose faith . It's not worth it.

I always use my AP. It holds the helm better than I can, and I know I can depend on it in any condition. I EXPECT it to work, not always wonder "is it going to work?". No thanks.
 

JamesG161

SBO Weather and Forecasting Forum Jim & John
Feb 14, 2014
7,745
Hunter 430 Waveland, MS
There will come a time... Maybe you made a poor decision and thought everything would be OK, but now you are stuck in dangerous conditions. It happens to everyone who is serious about this sport. Maybe you need to make an adjustment on the mast, leave the cockpit momentarily, and suddenly the AP loses it's track. The boat wildly swings, stuff falls, your passengers panic. They look at you with wonderment and silently lose faith . It's not worth it.
Very True!:thumbup:

Since RM make this AP for just about any boat, you see an almost infinite adjustment.

I am only chiming it (since my Hunter 430 is different than a Cat 30), to point out a couple of considerations.
The controller gets info from...
1) Flux compass (course)
2) Rudder position (feed back of sensitivity)
3) Chart plotter ( Tracking mode, auto tacking ) ... thus GPS ( I wouldn't use this in foul weather or high sea states)

IMHO You can't have just one setting.
I would recommend you do what the others have said (with Cat 30), and do minor adjustment for your general needs and comfort.

Learn how to adjust quickly (practice) for changing sea states, if you do solo sailing.

Any AutoPilot is not a substitution for a Captain. It is basically a "steady on" course controller.

My rudder is so big that when I do a manual "hard over" my 43' turns in a 50' circle, but not if the sea state causes part of my rudder to come out of the water (manual or AP).

Of all my "add ons" the auto pilot is top on my lists of luxury for cruising.
You will love it!
Jim...
 
May 20, 2016
3,015
Catalina 36 MK1 94 Everett, WA
Calibration changed quite a bit with the latest firmware version (May 16) - lots fewer questions.
 
Aug 1, 2011
3,972
Catalina 270 255 Wabamun. Welcome to the marina
There will come a time... Maybe you made a poor decision and thought everything would be OK, but now you are stuck in dangerous conditions.
The comment is well founded, but somewhat moot. The AP will work without the rudder reference, but the rudder reference will not work without the AP. If it were a question of safety, I wouldn't risk lives on 2 little ball joints and and a pair of plastic bushings. This is, after all, consumer grade product and should never, ever, be considered as anything more.
That said, the reference is on our "toy" list, only because we like toys. For us, it's in the "diminishing returns" column, as we know quite well what the performance characteristics of the AP are, and adding additional, breakable hardware won't increase the performance much beyond what's already known. The wind input was on the "must have" list, as it's exceptionally capable of providing input, allowing focus on trim and tactics. Nobody I know can keep our big asym full as well as Ray can.