IS20 Wind: wrong direction

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   My 350 is just under 2 years old. It sails so well - by far the best of my 4 boats. But quite a few quality issues (including window replacements). However, several problems with the Simrad package. First was loss of cumulative log (see separate thread). Then Auto pilot needed motor replacement (Jefa, not Simrad part).  It had jammed on a couple of times, but I managed to free it, then it just stopped working, but allowed manual wheel steer.
Latest is: I replaced auto pilot motor unit after motor/clutch replaced and on first test trip, I found True Wind was missing - just dashes. In Marina I went through set up, and when I reset "Sources", true wind re-appeared.
However, on second trip. I found wind direction is incorrect. It is out by approx 150',  but that is not consistent for all wind directions.
Speed seems correct.
I reset the wind (using the "Offset" facility) several times. No effect.
I noticed a very quiet "tick tick" when motor off, but instruments on. 
Not sure if the sound corresponded with direction change or speed change, due to damping effect.
I am not sure, when the "True" wind was missing, if wind direction was correct or not, as I was more thinking about what might have happened to the True Wind indicator.
Any comments or suggestions?
Can anyone confirm if there is normally a "tick tick" from the IS20 instrument? Or whether this is a sign of the problem?
I have reported this to Hanse and Simrad/Navico, and am waiting for response. Their service is usually good.
Thanks

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RoyP Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Joined: 03 February 2008 Status: Offline Points: 28	Post Options Post Reply Quote RoyP Report Post Thanks(0) Quote Reply Topic: IS20 Wind: wrong direction Posted: 09 March 2010 at 19:55
	My 350 is just under 2 years old. It sails so well - by far the best of my 4 boats. But quite a few quality issues (including window replacements). However, several problems with the Simrad package. First was loss of cumulative log (see separate thread). Then Auto pilot needed motor replacement (Jefa, not Simrad part). It had jammed on a couple of times, but I managed to free it, then it just stopped working, but allowed manual wheel steer. Latest is: I replaced auto pilot motor unit after motor/clutch replaced and on first test trip, I found True Wind was missing - just dashes. In Marina I went through set up, and when I reset "Sources", true wind re-appeared. However, on second trip. I found wind direction is incorrect. It is out by approx 150', but that is not consistent for all wind directions. Speed seems correct. I reset the wind (using the "Offset" facility) several times. No effect. I noticed a very quiet "tick tick" when motor off, but instruments on. Not sure if the sound corresponded with direction change or speed change, due to damping effect. I am not sure, when the "True" wind was missing, if wind direction was correct or not, as I was more thinking about what might have happened to the True Wind indicator. Any comments or suggestions? Can anyone confirm if there is normally a "tick tick" from the IS20 instrument? Or whether this is a sign of the problem? I have reported this to Hanse and Simrad/Navico, and am waiting for response. Their service is usually good. Thanks
	Salsa, Hanse 350 #104

Idelfix Members Profile Send Private Message Find Members Posts Add to Buddy List Commadore Joined: 01 February 2009 Location: Sweden Status: Offline Points: 396	Post Options Post Reply Quote Idelfix Report Post Thanks(0) Quote Reply Posted: 09 March 2010 at 20:27
	Hi Do you have an analog vind? Do you have an digital too ? if its not the same problem here it can be, and It happen some time that the needle get loose from the axle and often you can fix it by go downwind and then push on the glass of the instrument so the needle get stock again.
	"Keep sailing in free wind" http://suhrfa.blogspot.se

shaukaas Members Profile Send Private Message Find Members Posts Add to Buddy List Commadore Joined: 04 August 2008 Status: Offline Points: 395	Post Options Post Reply Quote shaukaas Report Post Thanks(0) Quote Reply Posted: 09 March 2010 at 20:48
	My guess is that you also need to be sure that the GPS is giving the SOG speed, so that the IS20 is able to calculate the true vind? Another thing: It says something in the IS20 manual that you should motor against the wind, full power, and then reset the 0' - to take into account any misalignment of the wind vane. I've got similar experience with the sumlog, AP24 (Jefa motor) and IS20 Wind. How did Navico/Hanse take action to rectify it?
	S/Y Nadun - Hanse 320#171 LG3600 - NOR13510

Johan Hackman Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral of the Fleet Joined: 24 August 2005 Location: Sweden Status: Offline Points: 4361	Post Options Post Reply Quote Johan Hackman Report Post Thanks(0) Quote Reply Posted: 10 March 2010 at 07:36
	IS20 uses Speed Through Water to calculate True Wind which gives you Wind over Water as opposed to Ground Wind, which is the wind blowing over land. The former is more useful when you are sailing. The problem with the needle of the Wind instrument showing the wrong angle is an issue known to Simrad. I am currently having my third Wind instrument replaced. The more people reporting the problem to Simrad the better though. It will help them look deeper into the problem. I have an IS20 Graphic which displays wind information digitally. I can thereby check the information on the SimNet network with what is displayed by the needle on the Wind intrument and my conclusions have been that it is the needle that fails. I think new Hanses are equipped with the cheaper IS20 Combi which doesn't have this feature. There is a "tick tick" sound coming from the Wind instrument while it is working. On my latest instrument that sound got noisy and I could hear that something was wrong with it. Johan
	http://www.johanhackman.se

RoyP Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Joined: 03 February 2008 Status: Offline Points: 28	Post Options Post Reply Quote RoyP Report Post Thanks(0) Quote Reply Posted: 10 March 2010 at 11:53
	Thanks for comments. Simrad/Navico have now said they will post a replacement instrument, which I will fit. So that suggests that comments about the needle are correct. That quick response/service is excellent! I only reported problem at weekend. when I have fitted, I will confirm if problem is cured. I only have the Analogue Wind. The GPS is showing correct SOG. Shaukaas asked about the other problems and their solutions. The problem with the Cumulative log losing distance (ie distance run suddenly becoming a lower figure) was cured by a soft ware update from Simrad/Navico. I returned the IS20 and they fitted a new chip and returned it. Turn around time was very quick - all in one week. Again, good service. However, it had taken many months for the problem to be first believed (I think!) and then diagnosed. The Auto pilot problem. First (after 15 months) the AP jammed on full lock as I was leaving marina. That was another occasion when I was glad I had a bow thruster to help avoid other boats! I managed to free it by loosening ram joints. Agent thought reason was that, in one position, the AP linkages might make a perfectly straight line and so lock. I have checked this, and I do not think that is hte case. But, it may just be possible that if the rudder swings to quickly (as can happen when reversing and then turning from a marina), one joint may go too far and then not return until it is straightened. It is hard to explain that, but I may take a photo and see if others have had this problem. However, it then jammed again. Under guidance, I freed that by loosening and lifting the motor cover a little bit. Apparently that freed the clutch. Then I started getting the message "Clutch By Pass Overload" regularly. It did not coincide with any manouevre or strain on the AP. Usually it disappeared and the AP unit would start working. Simrad/Navico then sent a replacement computer. You need to be rather agile to change this, through the small hatch in the rear of the port cabin. This did not solve problem. Eventually the AP stopped working completely. The AP motor is Jefa, not Simrad. I returned the unit (Hanse paid carriage - weighs 15 kg). It was eventually returned and I believe the clutch was seized and a new motor was fitted. I have sailed twice since its return, and so far so good! Despite these (and a surprising number of other quality problems) I am delighted with Salsa!
	Salsa, Hanse 350 #104

Peter-Blake Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral of the Fleet Joined: 04 March 2008 Status: Offline Points: 2471	Post Options Post Reply Quote Peter-Blake Report Post Thanks(0) Quote Reply Posted: 10 March 2010 at 12:28
	May be this helps: http://www.myhanse.com/forum_posts.asp?TID=2832&KW=noise&PN=2 As your boat is the same age as mine (april 2008), i assume you may have the same problem. On my boat there was a not shielded cable inside the mast. Simrad told me, that there was a production series with the wrong cable. I added a Simnet Noise Filter Product Number 24006934. It was send to me by simrad. Since this time the winddirection is correct. Se my post from 02 March 2009 at 10:28 Edited by Peter-Blake - 10 March 2010 at 12:29
	Blake 370



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