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Everything posted by wheels

  1. Please do not take any of the following as me patronising you. None of your post is wrong, I am just expanding on some points because it's not quite so simple. Sort of. In this "tug" situation, it is about getting the charge back in to the Gel as fast as possible while as you correctly state, not causing gas in the Gel. However, simple chargers, or those specified for FLA/AGM can also be used, providing the charge current remains below the threshold of Gassing. Only in some points are they better. There is also a big advantage over AGM. Gel can dissipate heat much better th
  2. Don't panic. They are nothing special. If the picture of those are the original of course. Just a 20Ahr Sealed Gel is all they are and any sealed Gel of same size will suffice. The problem is that these are not great at a continual everyday deep cycle situation. These kind of Gels are designed for Standby operation where they stay charged up for long periods and then if power goes out, they provide current for a time till the power comes back on and are topped back up again. You could get away with a deep cycle AGM or FLA even. But if you go larger capacity to get greater duration from the m
  3. The IUOU designation is the important point here. Actually the letters hould read IUoU. The charger may have 24V on it, but that is not just what it is. IUOU is actually DIN 41773 and designates the specifics required for 3 stage charging of the batteries. I =Current U =Voltage. ( U and not V will be make sense in my description below) oU= is also Voltage (as above) In this situation, the I is maintained as a constant current bulk charge. The Voltage is varied. oU is a constant Voltage stage and takes care of the absorption charge and trickle charge stage. The idea is to be able
  4. The person to buy from and ask those questions to is IT. He sells and installs the B&G gear and will be able to give you the advice on which transducer to use.
  5. I suggest there was an explosion. The sub is lying in three pieces. Implosion would not likely do that. They tend to crack and water violently and almost instantly fills the void. There may be hull deformations in places, but they don't suck in like an empty tank under vacuum does. Early on it was said they were undergoing Torpeedo firing tests and I would imagine one has detonated inside the tube or even inside the Vessel. Which has happened in the past. I really can't see water falling fast enough to overcome a Submarine surley. But that is just my opinion. Anyone have any knowledge of thi
  6. When I was involved with CRA, this was very much a discussion taking place in OZ and NZ (within the circles of those involved in making such decisions) and was one of the main reasons behind the Excel. Upon having a quick google, I see the types of moorings and restrictions to anchoring have been emloyed in Oz. I guess the discussion went no further re the types of anchors being restricted, which is a shame. Although I note that there is a lot of "suggestion" made, or outright ban and use of mooring only. Also the suggestion of the chain causing most of the damage, so maybe the restriction of
  7. If anyone is considering buying a new Anchor, this is a good point to suggest considering a design like the Excel. And it's not because I am biased. There is a very good environmental reason. The Excel came about due to restrictions imposed in Austrailia. Because they have large areas of Sea grass and other rather sensitive seafloors, they are now restricting the tye of anchor one can use to just the plough type designs. The designs like Sarca, Spade, Rocna etc cannot be used in many areas. There is murmor that this could become a thing in the future for areas of NZ like the Sounds etc. The de
  8. Thanks, didn't know they were that old.
  9. No the CQR was designed way before they existed. A very famouse Scotsman by the name of Sir Geoffry Ingram Taylor designed it in 1933. He was a very clever Physicist, Mathmatician and an expert in Fluid Dynamics and Wave Theory. He applied maths to it's design.
  10. Simpson Lawrence made the Delta, a fixed shank version of the CQR. Lewmar made CQR. While there are similarities, Manson have argued they never copied CQR. Only they know the real truth I guess, but they still have a great version, unlike many of the nasty copies of it out there. They certainly did not "copy" Rocna. But they sure improved on it. And besides, Rocna has a bigger story behind it's design than I wish to say. That is up to KM if he ever wants to tell the story. After all, how do you come up with a design different to another without being similar. There are dozens of differen
  11. Yes there are junk copies out there, but Manson wasn't one of them. They had licence to build the genuine real deal. The CQR is one of those anchors that seems to work great for many and work absolutely crap for a few. I think it is setting technique that makes the difference. Follow IT's advise. People make the big mistake of thinking they are setting the ancor, but never testing it. As said, you should be able to pull down at full throttle and the anchor should hold you. NEVER try that unless you have the chain/warp locked off though, or you will damage the winch. The Manson Suprem
  12. One thing made very clear in my 1st aid training was that it is extremly unlikely you will ever bring a non beating Heart back to beating by CPR. The only reason you do CPR is to maintain blood/oxygen flow. Hence why you never stop till a paramedic take over. The only way to restart a Heart is via a shock from a Defib unit.
  13. Yes the screw needs to be removed. A BIG screw driver is required and give the screw driver a good hard crack with the other "persussion screw dirver" (Hammer). Normally it should not be hard to remove because maintenance should be every 6 months to 12months at the most. Once the screw is out, the drum should slip off. But the same applies. It "should" slip off because it "should" be done once a yr at most. The clutch surface should always be kept clean and have a very slight smeer of grease on it. The shaft should also be greased ever so slightly to ensure easy removal of Drum/Gypsy. It
  14. Power boats have their place too BP. You may not like them, but many do. For those who have limited time and want to get out there on the water, or maybe just a fish, or maybe they don't like the boat tipping onto it's side to make it go, or have no idea or desire how to raise a sail, or don't like the slow speed, especially on a low to no wind day, the Powered Vessel is their dream.
  15. Well whaddaya know. I had always thought that by the name and quality they were naturally German.
  16. I was discussing it with a Fairly high up First Aid trainer and they had said that the dropping of the breaths part was in consideration and most likely going to be adopted at some stage, but they had no firm confirmation that it would be dropped or when.
  17. The reasoning now is that every time you do a compression cycle, air has been pumped in and out of the lungs in an amount that will ensure enough oxygen has entered the system. Heart compression and thus movement of blood is so essential that it is more important to maintain chest compressions and not to bother with the breathing part. Of course none of that is possible if the person is in the water. It is considered that the person when in water may have only just stopped breathing and the heart is still pumping, so resus by giving breaths may keep a persons heart pumping till you get them
  18. Expensive depends. Even with tools that "do the job OK" there is cheap and there is quality. It depends on the user. A pro doing lots of connections daily would be looking at the expensive end of the market. The likes of you and me need cheap as posible that can still get the job done OK. And of which, looking on trademe returned a great range of crimping tools, ranging from cheap through to mega expensive. The annoying thing to me is that there are so many different types of crimp pins in the World, each requiring a specific type of crimping tool, that if you are in the game, you need to ca
  19. Yes they are really common. You can use them without a crimper. Just twist the bare end and slip it into the jacket, place the terminal into the terminal and tighten up. These things stop the clamping screw from cutting through the wire end and add a little extra stress relief to the connection. However, if you want to crimp the jacket onto a wire, you need the proper tool and they are very expensive. It is best to not try crimping with anything else as it just does not work well. I also place a little heatsrink on the wire end and slip over that plastic jacket of the terminal just to give
  20. Very few around now because unless the facility has a waste catching/managing system, you cannot clean your hull. And as most want to clean the Hull for new Antifouling, you tend to need that catching facility. Thus we all forced to use a commercial yard.
  21. The big lesson for me when we first lived aboard was in the shift from large land based home to a small box isolated by water. And I had already been warned and thought I was prepared. In fairness, I am affected more than the average with such a life changes, but it still came harder than I was actually expecting. So once you move aboard, you need to be propared that this is a major change to how you live your life. You need to give yourself 3 months at the least to settle before making rash decisions. Be prepared that within those 3 months, your had may or may not on multiple occasions ask, W
  22. I thought I had replied to this thread. I typed a post and must have forgotten to post it. The important point when hooking up Series/ Parallel is to ensure the bank gets an equal charge across it. To ensure this takes place, ALWAYS connect the Positive feed from one end of the bank the the negative from the other end, so as the current is drawn equally across all the bank. So for the situation of seperating the bank to two different sides of the Boat, you need to take one feed across to the other pair. As the Negative feed should be running down to the Engine Starter motor mounting Bolt a
  23. KM has been quiet because he has big news of his very own. Or I should say, CRA has big news. I assume KM will have a " Media Release" of his own soon. Anyways, It's currently keeping KM's head down bum up. So hence the lack of stirring of our local natives. Congrats to the new owner. Are we going to get an introduction soon???? I do hope it is a Crew member taking over the helm and not just some faceless person that buys up Forums as an investment.
  24. I love these boats. There is something very similar for sale here in the Sounds. So many times I have thought about her, but also quickly follow my thoughts with the consideration of what it must cost to keep one afloat. The most beautiful craft on the water in my view has to be one of these. The mighty J Class. Similar design lines, but huge. I shot to Trademe to see if it was still listed, but sadly it's not. But I came across this beautiful Logan classic is for sale. https://www.trademe.co.nz/a/motors/boats-marine/yachts/keeler/listing/3039879011
  25. Firstly, the FET one IT has suggested has 0V loss, so you get full charge voltage to banks, There are two ways of connecting a VSR. Either a Disconnect and a Voltage threshold so as the Start bank is never fully drained. Or as you said, charge one, then the other. However, in either situation, the second is switched back in at an unequal charge state compared to the other. Thus even identicle batteries will present different charge loads. The Battery presenting the greater load hogs all the current. You would expect that the batteries would even out, but that is not often the case. So one en
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