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Showing content with the highest reputation since 12/03/24 in Posts

  1. Don't get me started on boat values. What do they say when you want to fix / replace or upgrade stuff? Over-capitalised... As long as you use your boat and enjoy it for it's intrinsic value, rather than it's financial value
    4 points
  2. If, and it's a big if, there was a biological solution then just maybe, you can control it. The big vacuum cleaner thing, while it may be a stop gap to slow things down, is going to have it's own issues. First, the Caulerpa fragments that are ending up in the water column will be pretty interesting. Second, what environmental damage is scrubbing the seabed doing? I'm not saying don't try this, but having watched first-hand the spend on trying to eradicate Undaria, and the lack of success, I'm more than a little skeptical about how all this will play out. Asian seaweed
    4 points
  3. It such a busy calendar it hard to find a free day for our race. We tried really hard to avoid any clashes this year and we were the first event in the AYBA and YNZ calendar but looks like the Gulf Classic have had that date for a while and we just didn't know. We (NZ Multihull Yacht Club) want to work with the other clubs to grow this event into something huge, so please let us know your feedback and ideas.
    3 points
  4. I'd put your battery switch / isolator on the positive side. Just cause that is what you do. The negatives go to what ever ground you have. The positives have the control (switches) on them. Helps in the future when you start adding more sh*t, you know which way round everything is. Why would you put switches on the negative / earth?
    2 points
  5. Not sure how you can compare it to the M.bovis outbreak. In that case, MPI went and shot cows that belonged to someone else. What would you do here? go and shoot all the snapper? Cows are easy to find, they are normally in paddocks and stuff. And not excessively mobile, assuming the paddock is fenced. They don't move twice a day with the tide (unless of course, they are dairy cows, then they move twice a day into and out of the milking shed, but I digress). I found the Sunday programme to be highly emotive. But it skipped some key facts. What is the actual impact of caulerpa, as oppo
    2 points
  6. Maybe I'm taking that too personally, but I don't actually see myself as complaining about everything, just pointing out that scrubbing the seabed will have it's own consequences? There's a difference between whining about everything and applying some thought & analysis to what the media serve up every day. Sorry if that's offensive to you.
    2 points
  7. When changing from A3 to Masthead Kite after Sail Rock I left front hatch open to ventilate the boat as it was champagne sailing. However; after several beers and another 10 or so kts of breeze it would appear it wasn't the best move!
    1 point
  8. These boys had a pretty good weekend
    1 point
  9. Grand old log 5knota all the usual trimmings, oozes past adventure and old world charm, and with new fangled colour cordinated isolating switches! Um, do they make em half red and half black for the ultimate single throw DP? Guaranteed to solve your loops.
    1 point
  10. About the only benefit I can see is a doubling of the value of the boat!
    1 point
  11. Well, that didn't age well. How many of those are available retail in NZ? I've only seen (and got) red ones, accept for the parallel, which is yellow. PS, I'm only considering lead technologies (lead acid, lead carbon). If you want lithium, then yeah, the requirements and redundancies increase substantially. I'm still to understand the benefits of lithium, esp as retrofits in boats the age of Aardvarks and mine. I'm sure the need for additional isolation is more easily justified in more complex installations you get on these new fandangelled boats. Next you'll be discussing coffee ma
    1 point
  12. Double pole single throw, switch that functions as name implies. After toing and froing I decided three +ve switches on the three batteries in two banks, and two -ve automatic voltage/current/temperature sensitive switches on the LiFePO4 right next to the -ve post courtesy of bms’s was enough isolation for me and I considered it done. The start battery -ve post could do with one to be consistent but seeing as cars are permanently wired to starter motor without any isolation switch and have multiple earth paths I don’t think I can be bothered. Lithium is another level or two of paranoia t
    1 point
  13. Had a real fun day out on the water for the race, apart from shredding our kite somewhere off Long Bay. Did lots of transom watching as the proper racers showed us how it's done. Really appreciated the generous start line, even though we were a smidge late the amount of room made for a stress free experience. Be back next year.
    1 point
  14. I assume DPST refers to : Double Pole Single Throw Switch
    1 point
  15. I'm sure there are dozens of ways to configure everything, and each way has a logical argument behind it somewhere. But I just like to keep things as simple as possible. Anyway, here is some logic. The isolator switches are always red. So shouldn't they go on the positive? PS, what are these DPST things you speak of?
    1 point
  16. I have the isolator on the negative side ,why??Last yacht had a wire(presume earth) to the prop shaft. So in my mind ,even though the battery has no earth it self to the outside world.I am picking with salt crystals etc(boat are always damp even though feel dry) that somehow the earth/negative would be connecting to the water and creating a circuit Now comes a problem,auto bilge pump via float switch needs to be hard wired in,if isolator off ho does pump work?
    1 point
  17. It depends on what you want to achieve. But ultimately doesn't matter. Some standards recommend that both sides are isolated. Is the objective an emergency off, that isolates everything in the event of smoke? Or is the objective short term storage (1-2 weeks) to minimise all parasitic loads on a single battery? In a dual battery system, with solar, lithium BMS, voltage senses and all the extras you find hanging off the positive terminal and as close as possible to the battery I recommend a DPST on the negative side, that fully isolates both batteries in the event of smoke. T
    1 point
  18. Great to hear that Actionaire and Titus are racing against each other once again. They had many a great battle in Wellington, usually with Actionaire in front!
    1 point
  19. This presupposes that the only relevant impact is the impact on the economy. We are very good at disregarding social and environmental costs to our detriment. A thought-provoking point made on the program was the potential for maritime exports from NZ to be blacklisted or for those ships to have higher levels of scrutiny (read: cost) when arriving at other ports. Maybe M Bovis was the wrong comparator. Maybe gorse or invasive grasses are a better choice. Even there, we see better funded and more aggressive approaches to management of these invasive species. I suspect the issu
    1 point
  20. The other thing to add with the comparison to M. Bovis, is that there was a direct and quantifiable reduction in milk production due to M.Bovis. That could attach a dollar value to it quickly and be used to justify a business case for spending large sums of money to erradicate it. As far as we can tell, there isn't any economic impact from caulerpa. Just environmental and cultural. We haven't heard of fishing companies going bust cause they can't catch anything. We haven't even heard of fishing charters having trouble. They are still catching crayfish no issue on the west coast of Barrier
    1 point
  21. Probably no damage compared to the weed.The weed smothering all shellfish beds,fish unable to get too food source etc But lets do what we are good at,complaining nothing be done and when we try we complain some more
    1 point
  22. I accept that might be the case, but you stand a much better chance of getting it to a controllable level if you are prepared to put in the investment. In the program the comparison was made to the microbovis outbreak response - it was a sobering thought. M Bovis was identified in 2017 and by 2021 we had spent $350m controlling it (https://www.rnz.co.nz/news/country/455548/review-finds-mycoplasma-350m-bovis-eradication-efforts-on-track) By 2023 we had spent $650m of a predicted $800m to eradicate it. (https://www.farmersweekly.co.nz/news/milestone-for-m-bovis-programme/) At the
    1 point
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