That helps . I can understand why it is needed. it would be a great help to me . I do sail in the Beaufort / Broad / Morgan rivers more than anywhere else. I have to fight 7 to 9 foot tidal changes. I mentioned in a another post that I have been sailing real hard and doing real good with the water racing past the boat just to look at the GPS showing 3 knots. When I now I was doing at least 6 or 6.5? thanks This helps
On Tue, Jan 14, 2014 at 9:13 AM, Josh Muckley <muckl...@gmail.com> wrote: > Boat speed is very helpful for innumerable reasons. > > The speed wheel shows speed through the water. The GPS shows speed over > ground. If you take the differance then you can see the speed of the > current. > > The wind instrument uses boat speed to calculate apparent wind speed and > angle which is more valuable for sailing close hulled or preparing for a > jibe. > > Boat speed is a more appropriate choice when determining prop and engine > performance and hull cleanliness. > > Boat speed is also more valuable for motoring in a current. I lost > steerage in a narrow channel. I was moving faster than I wanted to hit the > dock but with the engine in neutral was still making 2 kts on the GPS. A > look at the boat speed told me I was going 0 kts. As little as I wanted to > I had to speed up. > > When preparing to reverse I always hold the wheel straight until the boat > speed comes to 0 then move 180° around the pedistal to drive backwards. > > To be honest GPS speed is way less useful to me and given the choice > between keeping only one would be the one to go. One of the only truely > helpful things that GPS will provide is ETA but while sailing so many > factors can mess with that number. > > You're right though you could do away with it all. For thousands of years > sailors didn't have fancy electronics and poor quality or no charts. > > I'll keep mine. > > Josh > On Jan 14, 2014 7:56 AM, "Rich Knowles" <r...@sailpower.ca> wrote: > >> Curtis, your ohm meter likely wont show anything. Plug it into the >> instrument to test it. >> >> Rich >> >> On Jan 14, 2014, at 8:31, Curtis <cpt.b...@gmail.com> wrote: >> >> I worked with the paddle wheel last night ad was able to clean it. It now >> spins freely but shows however it still has no activity on the ohms meter. >> All that being said, how much does this speed help you anyway? I mean it >> will tell me how fast the river is passing under my boat but not if I’m >> making speed? The GPS tells me distance over the ground, I have been >> sailing real good before and not making much distance over the ground. What >> are your thoughts on this? I will hook it back up and try it tonight after >> work. But if there is no activity on the meter It may have a bad wire or >> something. >> >> Thanks for you guys helping me out. I take no offence I know I’m green at >> all of this and expect a bit of new guy jokes and slapping around. It’s all >> good with me I’m just glad to have someone to ask help from. I am very glad >> you guys are her. >> >> Curtis >> >> >> On Tue, Jan 14, 2014 at 1:08 AM, Jim Watts <paradigmat...@gmail.com>wrote: >> >>> I had to knock the pin out of my paddlewheel and replace the wheel and >>> the pin, since I had whacked into something hard and it stopped working, >>> pretty much. Bent the pin, knocked one of the lobes off the paddlewheel. >>> Then I put the new paddlewheel on backwards, and it worked well enough >>> since I had a nice straight pin, but it took a lot of calibrating. I >>> noticed sometime the next year. >>> >>> It's a steep learning curve. >>> >>> Jim Watts >>> Paradigm Shift >>> C&C 35 Mk III >>> Victoria, BC >>> >>> >>> On 13 January 2014 22:02, Rich Knowles <r...@sailpower.ca> wrote: >>> >>>> Hi Curtis. >>>> >>>> Apologies for sounding frustrated. You are asking some simple questions >>>> for which there are relatively complex answers. I appreciate where you are >>>> as it's a place where most of us have been at one point, but it's so long >>>> ago we have forgotten:) I think we are all trying to answer your questions >>>> with the best we have to offer. I was under the mistaken impression that >>>> you did not have the manuals for the gear. Sorry! Bear with us. We all have >>>> the best of intentions! >>>> >>>> I looks like you have a well equipped boat, even if the gear is not >>>> brand new. A couple of comments: >>>> >>>> If your paddlewheel on your speed/temp transducer is not turning >>>> freely, you should be able to remove it inside the boat and push the paddle >>>> wheel shaft out to remove the wheel, clean it up, and get it going freely. >>>> If your boat is in the water, you can still pull the transducer out as long >>>> as you are prepared for a short spurt of water until you get a plug or the >>>> dummy transducer in the hole. The lack of continuity, however you are >>>> measuring it, may or may not mean anything. Try getting it rotating freely >>>> and spin it while it's in the boat to see if it's registering on your >>>> knotmeter. >>>> >>>> If the wind vane is working ok, you should be able to tie it into the >>>> autohelm and use it as a steering sensor. Your manuals should tell you how. >>>> >>>> Don't give up! We're here to help you out, and annoy the hell out of >>>> you occasionally just to get even:) >>>> >>>> Cheers. >>>> >>>> Rich Knowles >>>> INDIGO LF38 >>>> Halifax, NS. >>>> >>>> >>>> On Jan 13, 2014, at 11:09 PM, Curtis <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> 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> 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> 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 >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> This List is provided by the C&C Photo Album >>>>>> http://www.cncphotoalbum.com >>>>>> CnC-List@cnc-list.com >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> *At sea, I learned how little a person needs, not how much. - Robin >>>>> Lee Graham* >>>>> >>>>> _______________________________________________ >>>>> This List is provided by the C&C Photo Album >>>>> http://www.cncphotoalbum.com >>>>> CnC-List@cnc-list.com >>>>> >>>>> >>>>> _______________________________________________ >>>>> This List is provided by the C&C Photo Album >>>>> http://www.cncphotoalbum.com >>>>> CnC-List@cnc-list.com >>>>> >>>>> >>>> >>>> >>>> -- >>>> >>>> *At sea, I learned how little a person needs, not how much. - Robin >>>> Lee Graham* >>>> >>>> _______________________________________________ >>>> This List is provided by the C&C Photo Album >>>> http://www.cncphotoalbum.com >>>> CnC-List@cnc-list.com >>>> >>>> >>>> _______________________________________________ >>>> This List is provided by the C&C Photo Album >>>> http://www.cncphotoalbum.com >>>> CnC-List@cnc-list.com >>>> >>>> >>> >>> _______________________________________________ >>> This List is provided by the C&C Photo Album >>> http://www.cncphotoalbum.com >>> CnC-List@cnc-list.com >>> >>> >> >> >> -- >> >> *At sea, I learned how little a person needs, not how much. - Robin Lee >> Graham* >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com >> >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com >> >> > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- *At sea, I learned how little a person needs, not how much.- Robin Lee Graham*
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