Tear them all out and send them to me, you'll never find any use for
them. In return I will send you my wind instruments, which mostly
consists of some cassette tape tied to the shrouds.
Cheers,
Paul.
On 14-01-13 09:56 PM, Josh Muckley wrote:
KEEP THE ELECTRONICS!
The speed wheel is probably full of the last seasons marine growth. A
tooth brush should straighten that out.
Yes you can get the autohelm to steer to the wind. On my symrad unit I
have to configure it for one or the other. Not too hard but certainly
not on the fly. Steering to the wind is conditional on having a wind
direction input...possibly from those instruments you were considering
tearing out.
Josh
On Jan 13, 2014 10:09 PM, "Curtis" <cpt.b...@gmail.com
<mailto:cpt.b...@gmail.com>> wrote:
Rich,
I have read and continue to read the manuals for all this
equipment. I note a bit of frustration with regards' to my lack of
understanding of this equipment. I have only owned my C&C30 for a
couple of years now, The boat came with a lot of st50 auto-helm
equipment
1) Tri-data
2) VMG
3) ST4000
4) Wind
5) Multi
6) Speed Trim
7) NAV-Data
8) I also have a 36" pole with a wind feather on the top of it? Z159
Transducers'= (wind speed true/app Direction)
(Water speed paddle wheel)
(Depth temp)
(Wind angle? Z159)
(Fluxgate)
Everything seams to power up, but the paddlewheel will not turn
freely. And there is no continuity in the cable? So, it's fair to
say the speed trans is no good.
The fluxgate I was able to swing in as the "Manual" instructed.
I'm able to set the clutch in place and hold the boat at the
heading I point it at using the st4000 so I know that works. But
reading the above makes sense that it would be independent of the
Garmin GPS. However I was told that's what makes the system so
cool is It would follow a courts set by gps. If I read Schiller's
post correctly I could set it to receive the wind vane so I might
steer a wind angle? Now that would be progress.
Moving forward I will hook back up the Fluxgate compass and
reconsider what else?
Thanks again its just so much to take in for someone that has
never been involved in marine electronics and new to boat
ownership as well.
I will get it. It just may take me more time than I was hoping for.
Thanks again for all the advice and help. With out you guys I
would flounder for months on this stuff. Maybe I should just cut
it all loose and e-bay it. Just use the Garmin and the depth
sounder. It would be a way to watch both ends of the boat in close
anchorages.
Cheers, Curtis
On Mon, Jan 13, 2014 at 4:26 PM, Rich Knowles <r...@sailpower.ca
<mailto:r...@sailpower.ca>> wrote:
Curtis:
The fluxgate compass is the primary source of heading
information for the autopilot head and should *not* be
disconnected.
When you push the "AUTO" button, the course computer locks on
to the compass heading the boat is on and develops internal
correcting signals as the boat yaws to either side of the
original heading and uses those cross-track error signals to
drive the wheel and hold the course steady. Once properly set
up, the course holding abilities of the ST4000 are quite good
and you should be on a constant course in the direction
originally set. This way of using the ST4000 is the standard
way of operating. It's just fine for relatively short legs
but, as it only uses the boat's heading as a reference, it
cannot compensate for current or leeway of the boat. In other
words, you could be doing 220 deg for several hours and be
miles of your intended destination if a cross current caused
by tide has pushed you away from the rhumb line.
To avoid getting pushed off course by factors that the
fluxgate compass cannot measure or compensate for, an external
source of cross-track error signals is needed that uses the
final destination point as the reference from which to
calculate whether course correction is needed.
When you have a "GO TO" destination set up and activated on
the GPS unit, the GPS will develop off course signals that can
be used by the auto helm computer to steer the boat to the
destination. That information is delivered to the ST4000 via
the NMEA signals.
Pardon me if you are aware of this already. I strongly
recommend reading the manuals and, if there are terms that are
unclear, Google them up.
Hook that compass up and RTFM!
Rich Knowles
INDIGO LF38
Halifax, NS.
On Jan 13, 2014, at 4:26 PM, Curtis <cpt.b...@gmail.com
<mailto:cpt.b...@gmail.com>> wrote:
I have a flux gate compass I disconnected it from the head
because I thought the auto-pilot head would now get its
heading from the GPS unit?
So I will take some photos and show you what I have.
How will I ever nap a nap in???
On Mon, Jan 13, 2014 at 2:19 PM, Michael Brown <m...@tkg.ca
<mailto:m...@tkg.ca>> wrote:
>Though something to consider is that the 0183
standard is for a total of 4
>wires to send and recieve. RX+GND and TX+GND. I
didn't see where you
>mentioned all those wires...sounded like too few.
The ST4000 control head is NMEA IN only, two wires marks - +.
>
> So now, If I understand you correctly. I first have
to create a route then to
> start navigating a course or to a way-point. That
should start
> broadcasting a course to steer signal. then I
in-gauge the st4000 by
> pressing the +10 and -10 at the same time and it
should start taking
> direction from the Garmin?
> does this sound correct?
>
With NEMA to the ST4000 it depends on what is being sent.
Autohelm describes two
scenarios, automatic acquisition and manual acquisition.
Automatic - both cross track error and bearing to waypoint
are sent
Manual - only cross track error is sent
With automatic get everything engaged and press +10 and
-10 together. The manual
requires that you get on course withing 5 degrees of the
bearing to the waypoint and
cross track less than 0.1 nm, then press +10 and -10 together.
My guess is, and strictly a guess, is that the ST4000 uses
its own fluxgate compass
for navigation and takes some error correction from NEMA
for cross track.
>I know it has probably been done by others but I am
not sure that I would
>ever let my ST 4000 plus steer a course unattended
based on transfer data
>from my chart plotter.
I wonder if that was what Autohelm was thinking, they seem
to use the fluxgate compass.
> Curt ? it?s been my experience that pretty much NO
equipment uses the same color wire for the same thing,
even among equipment from the same manufacturer.
>You need to connect the NMEA0183 output wires from
the GPS to the NMEA0183 input wires on the >
autopilot; TX+ and TX- on the Garmin to RX+ and RX- on
the Raymarine.
>I can guarantee that the chances of any two of these
wires having common colors is about zero.
Supposedly the + is Red and - is Blue, however Autohelm
agrees with you. They are marked + and - only.
Michael Brown
Windburn
C&C 30-1
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