K4309
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Posts posted by K4309
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3 hours ago, Psyche said:
Here they are using their state of the art equipment just before impact
They were still using lead lines on the last survey boat. They even make one of the ratings taste the mud. Apparently silt tastes more bitter than sand or regular mud.
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5 minutes ago, Priscilla II said:
Well it most certainly “ found a submerged object”so that part of the mission was a success.
I note that the crew muster was 75 but the bunk capacity was 66 so some crew must have been on watch.
not sure if percussion hydrography was in the design spec's...
They stated they 'evacuated 75 crew and passengers'. Didn't realise NZ defense assets took passengers. Saturday night, more people onboard than bunks, carrying passengers, yet they say they were working.
Several things don't add up.
Core crew is 30 something. Not 75.
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4 minutes ago, Priscilla II said:
“Missions that the ship enables include coastal and harbour survey, underwater explosive disposal, underwater search and recovery, and limited mine countermeasures,” the NZDF said. The ship supported Navy operations “across the maritime domain”.
“The ship can survey harbours and approaches prior to larger support ships landing support equipment and personnel, whether for combat or disaster relief. It can support the ongoing mission to eradicate explosive remnants of war in the South Pacific.
“And it can undertake salvage operations to find and recover submerged objects.”😀
Think you need to go through your post and change the present tense for the past tense
'Can' should now be 'Could' or 'Did'
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1 hour ago, Psyche said:
Great vantage sport at stokes reserve, think they'll block public access?
Just had a suss on Streetview, and it appears the view is already locked by trees. Same trees you can see in the aerial photo.
Happy to be proven wrong though.
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Wonder how they'll make that work if its a northerly?
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1 minute ago, CarpeDiem said:
there is no link. it's an image...?
Oh dear, my computer is definitely saying 'no' then.
Just a long two lines of text that looks like a broken url.
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2 hours ago, CarpeDiem said:
Westhave Berth holders got an email with this in it:
The link isn't working for me.
Is it a map of the exclusion zone?
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The BYOB was for 2 days, where as the grandstand is for 1 day.
Would have been $628 BYOB for the family, $750 to take the family for one day. Kids are more interested in watching it on TV and me putting that cash into their bank accounts... Especially since they are getting their heads around compounding interest.
Disappointed the sub 49fter sold out so fast. Logged on about 3pm and it was gone (once I worked out how to get the website to go).
Anyone know if / how you can watch the practice day? We are keen to see these boats in person doing their stuff, doesn't have to be racing, in that the coverage is better on TV for watching the racing, but be great for the kids to see these things on the water.
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3 minutes ago, Black Panther said:
I've never understood the word presale. Makes no sense.
It is a way of gaging interest, so they can work out how much to rheem you for on the pricing...
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Do you guys want to get compensated every time there is a road closure somewhere as well?
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3 hours ago, El Toro said:
You also have to pay to have your boat near the course, I believe all the slots, or the presold tickets have been filled already. Was around 800 per day
Presales open on Monday.
But yes, you need to buy a ticket to "Bring your own boat"...
Or there is the waterfront grandstand and the waterfront premium.
In saying that, I am just a pleb, so the presales I'm signed up to may not be the presales for important people / high net worth individuals etc. It is possible all the boat tickets have already gone to corporate hospo and high net worth types.
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1 hour ago, CarpeDiem said:
That is against the laws of physics. Namely ohms law.
If it is against the laws of physics, how come the OP's charge controller is doing it?
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30 minutes ago, CarpeDiem said:
That is against the laws of physics. Namely ohms law.
This is your first misleading statement.
It's physically impossible for a charging circuit to go straight to the absorption voltage regardless of its SoC.
The key word here that you've used is "regardless".
If the battery is "substantially" charged then the absorption voltage "could" be reached within a matter of minutes or maybe even seconds. However if the battery is "substantially" discharged then the absorption voltage will take substantially longer to reach, hours or even days.
Your second misleading statement is that a normal absorption voltage would be 13.8v. This is misleading because you are implying that the bulk phase termination voltage and the absorption voltage are somehow different when infact they are not.
I would need to understand what 'partially charged" meant and the chemistry to be able to assert if this is normal or not.
Eg, assuming a 100ah AGM at a psoc of 99% then yes it would be perfectly normal for the absorption voltage to be reached in a few seconds.
Assuming a 100Ah AGM at 70% SoC then this would be impossible unless the battery was short circuited internally and thus naffed.
While both of these are partially charged batteries the behavior will be different depending on the actual psoc.
Christ you can be argumentative. And splitting hairs.
It is normal for a controller to call for 14.4v in the bulk phase. Weather or not the circuit achieves that voltage is entirely dependent on the battery. BUT THE CONTROLLER CALLS FOR 14.4v. In this thread we have no idea about the battery at all. That doesn't mean what I am saying is misleading. It means we have no idea about the battery.
You can split as many hairs as you want, my point was simply that the OP thought it was a problem that the controller goes to 14.4v, as far as I can tell that is doing what it is supposed to do.
There is so much missing context around what the actual question is, I can't really accept you telling me I'm being misleading in this context. Just trying to answer the guys question, not wanting to be exposed to a physics exam by your uptight and clearly superior self. Get over yourself.
EPever MPPT controller programme settings for context bulk charge = 14.4v.
②Battery Voltage Control Parameters Below parameters are in 12V system at 25 ºC, please double the values in 24V system
Battery type Voltage
Sealed
Gel
Flooded
User
Over Voltage Disconnect Voltage
16.0V
16.0V
16.0V
9～17V
Charging Limit Voltage
15.0V
15.0V
15.0V
9～17V
Over Voltage Reconnect Voltage
15.0V
15.0V
15.0V
9～17V
Equalize Charging Voltage
14.6V
——
14.8V
9～17V
Boost Charging Voltage
14.4V
14.2V
14.6V
9～17V
Float Charging Voltage
13.8V
13.8V
13.8V
9～17V
Boost Reconnect Charging Voltage
13.2V
13.2V
13.2V
9～17V
Low Voltage Reconnect Voltage
12.6V
12.6V
12.6V
9～17V
Under Voltage Warning Reconnect Voltage
12.2V
12.2V
12.2V
9～17V
Under Voltage Warning Voltage
12.0V
12.0V
12.0V
9～17V
Low Voltage Disconnect Voltage
11.1V
11.1V
11.1V
9～17V
Discharging Limit Voltage
10.6V
10.6V
10.6V
9～17V
Equalize Duration
120 min
——
120 min
0～180 min
Boost Duration
120 min
120 min
120 min
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57 minutes ago, CarpeDiem said:
This is misleading.
During bulk phase the current will decrease or stay constant as the voltage increases to the absorption voltage.
When the voltage reaches the absorption voltage the bulk phase is said to have completed and the absorption phase begins.
During the absorption phase the voltage is held at the maximum and the current decreases.
Absorption voltage could be 14.4v.
13.8v is a common but high float voltage and is too low to fully charge any 12v chemistry except LFP.
In the context of this thread, I'm not really sure what is misleading about it. It's not like I've said vaccines are safe and effective, or anything that could be genuinely misleading.
So I may have mixed up some of the finer points of what the current does, I don't think I have, but the main point is the OP thinks there is a problem with his charge controller going to 14.4v. I can't see a problem with that and understand that is what it's supposed to do in the bulk charge phase. Moreso, many charge controllers and smart alternator regulators go directly to the bulk charge voltage at the start of a charging cycle regardless of the SoC of the battery.
Do you see any issue with the OP's charge controller going straight to 14.4v when the battery is only partially charged?
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That photo is handy and explains a lot.
Good to understand you already have a controller (my misunderstanding).
Most batteries undertake bulk charge at 14.4v. If you battery is far from fully charged, then the controller ramping the voltage up to 14.4v is exactly what it is supposed to do.
There should be a chart in the manual with the charging stages and voltages. Or at least a table with voltage settings for charging of various types of batteries (Flooded lead acid, AGM, Gel, Lithium etc) Bulk charge is typically 14.4v, with as much current as you can get in. Absorption stage is typically 13.8v and the current declines as battery resistance increases until it is fully charged, then it will flick over to float stage (maybe 13.2v and basically no current).
Obviously all those voltage settings are user programmable so can be varied to match the exact requirements of the type of battery. It is important to match the exact requirements of the battery. They are also adjusted for battery temp, assuming you have a temp prob on the battery linked into the controller. I'd be surprised if a system of this cost / quality did not have one. Anyway, that means that if the batt temp is substantially different form 25 deg, you will get slightly different voltages for each stage, compensated for temp.
If you aren't running the wind genny at the time of the photo, I'd say the controller and the volt meter are showing your 'resting' battery voltage, those numbers look typical for a partially charged battery.
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Edit above, sorry, I only saw the 100w at 19knts, not the full rated power of 420w (29knts). You will need a 35amp or 40 amp solar controller, not the 10 amp stuff I priced above. 40 amp models are in the $220 (EPever) to $310 range (Victron).
Noting that on the website the 24v and 48v options show a Silent Wind branded charge controller supplied with the wind generator. There isn't a picture of one with the 12v option, but it is listed in the product discrition:
- External hybrid boost charge controller for wind – and solar- energy with multi-function display and integrated electronic/manual stop switchSilentwind PRO 12V - Silentwind (silentwindgenerator.com)
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I was a little bemused at this thread, wondering how the supplier isn't providing technical support. I know sometimes technical support in Eglish as a Second Language can be a tad sub-optimal on occasion (me trying to understand whoflungdung brand cheap but effective lectronic components I've got off Ali Express).
Anyway, on having a look at the website, my understanding (which could be wrong, it has been before) is that you need an external charge controller. Exact same item as for a solar panel. They list them separately on the silent wind website.
The below is the exert from the 'marine' page of silent wind. The voltages you are reporting out of the wind unit sound similar to the random voltages you get out of solar panels. Run them through a solar controller, like an MPPT version, and they will convert them to the ideal voltage for charging the battery, and vary the current dependent on the power (watts) produced by the wind unit.
Disclaimer, I have never had anything to do with wind turbines, so my apologies if I'm wrong.
PS, you can get a basic but reliable 10a EPever Tracer solar controller for $107 EPEVER TRACER 1206AN MPPT Solar Charge Controller - 10A (micromall.co.nz)
or a Victron 10a unit that has a whole load of additional functionality, monitoring and battery preservation / protection features with intergral bluetooth for $110 SmartSolar MPPT 75/10 (12/24V-10A) – AEP Victron Energy Store
PPS, reading that again, should the charge controller come with the Silent Wind?
The Silent Power Blades are produced in carbon fiber, hand-laminated, with great resistance and minimum noise emission, which is the great differentiator of the Silentwind.
The charge controller is external, hybrid (wind and solar energy), has multifunction display and integrated stop switch (electronic / manual).
The parameters can be adjusted directly in the controller or through the application that is available in IOS and Android. Among the available parameters are the brake module, which allows the maximum current adjustment, and the load cut-off voltage module, which regulates the maximum charge voltage of the batteries.
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5 minutes ago, khayyam said:
Penalties can be overcome, but if one boat comes off the foils they might as well just stop the race.
Yes, but as far as I can tell, the whole point of match racing is to try and mess up the other boat, rather than to try and go as fast as you can. Hence, if you count the penalties, you get a get a handle on who is messing with who the most.
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1 hour ago, Addem said:
While the old 12m races were long and slow by comparison, the technical difficulty of sailing them well was demonstrable which made them compelling viewing for the purist but not much so for the novice.
I think the catamaran version took viewer engagement to another level for both novice and purist
But these boats are hardly worth watching. We can't see what's going on and can't appreciate the tech or tactics. The graphics on screen are uninformative and commentators don't know much about sailing. Mostly it's about watch who wins the start and then wait for the next race.
But I suppose we can never go back
My whole family will sit down and watch sail GP together, including Miss 11 and Mr 9. Miss 11 will go find the pre race previews / video blogg thingies and we consume all media that Sail GP can produce. She keeps track of where and when the next event is and we look forward to a race weekend, checking time zones for what time the coverage will be live, etc.
Unfortunately Sail GP is taking a break while the AC is on, so we tried watching some the other day.
The onwater graphics don't even tell you anything about the wind. Not which way it's going, nor its strength or speed. We watched the start, most of the time we didn't even know where the line was, then, just as they crossed the start line, they cut to an ad break.
The onboard footage shakes so bad I can't watch it, where as SailGP just go some Go-pros so the images are stabilised...
They have a wind graphic that shows you a heat map of wind strength on the course, but still no speed or direction.
I've not been able to work out the tactics, noting it is match racing and not fleet racing. As far as I can tell the best thing to do is keep score of the numbers of penalties, but they don't track those on the coverage either.
The highlights footage is simply incomprehensible to watch. It jumps around from incident to incident, but there is no context if it is even the same race, if they are at the top mark or the bottom, how far through the race, etc.
The foiling boats mean nothing, as we have no comprehension of speed on screen. There are no crew to see as they are all hidden under fairings. At least on the Sail GP they still need to actually swap sides when they tack or gybe.
All together incredibly frustrating trying to follow it.
Anyway, both kids declared the AC as boring, Miss 11 started reading a book straight after the first start it was that dull. It's getting to the point that if Mr 9 doesn't do his jobs (empty dishwasher etc) I'm going to threaten him with making him watch some America's Cup with me.... As in watch AC is some sort of punishment.
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2 hours ago, LBD said:
Has the incident been captured on video?
The crane I watched free spool down from 15m until the drum was empty, well after the load hit the ground in the middile of a dozen or so staff, some suffering minor injuries was far from boring, it was.....very very exciting!
Having to dismiss the crane driver after he tested positive for Methamphetamine did not trouble me in the least...
No,
But strangely I've been on a site where the crane driver turned up basically still pissed from the night before, and his work mates dobbed him in before he could even get in his cab. Funny how the people that are at risk of having the sky fall on their heads take a keen interest in the health and wellbeing (or otherwise fitness for work) of the one that holds heavy objects up in the sky.
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2 hours ago, darkside said:
Any word on what failed? 6m is some drop.
Yep that was some pass on the Italians
Reading the official statement on the AC website, sounds like it was the wire, as in the crane lifting wire.
The crane is supplied by a third party and is operated by ETNZ staff, but that a representative of the crane supplier was going to have a meeting with ETNZ.
Being the wire, there is of course questions around sabotage. My first thought was that, surely security around getting into the compound would be high. If a bad actor got into the compound, wouldn't you just go and bugger with the boat itself? I'm assuming it is the very boring and less newsworthy poor maintenance.
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20 minutes ago, CarpeDiem said:
What did you use and get signed off/certified for the leak proof bulkhead fitting where the flexible hose exits the locker?
I haven't actually done that yet, as have a few jobs ahead of it, but the two options my gasfitter gave me was A), a proper grommet, or B.) any kind of sealant I want, as in Silicon, Dowsil etc.
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22 minutes ago, Psyche said:
and every bulkhead it passes through requires a fitting with two joints (one either side) if I understand the regs correctly?
It gets a bit murky.
If you have a single appliance you can use the flexible gas hose, available from Burnsco at $12/m or from the gas fitter at $4/m. (AS/NZS1561 class C by memory) You have to protect it from chafe at all points, so anywhere it does anything, like go through a bulkhead, you put it in some cable duct (the black plastic flexibly one, not rigid PVC).
If you have a 'complex' system as defined by the regs, then you need copper pipe. That is a system with more than one appliance. The copper pipe needs a different style of protection at bulkheads. As my system is 'simple' I didn't go down the rabbit hole to find out what that is. That, and I don't have any bulkheads on my 2.5m pipe run, just the exist hole out of the gas locker (which is still considered a bulkhead I believe, that one needs to be leak proof.
The only issue I had with the 'simple' system and flexible pipe is that 3 out of 4 gas fitters told me I still needed copper pipe and stainless flexible sections at each end. Even when I queried the regs and quoted the clause to them.
The great irony is that, when discussing gas certificates with my insurer, all they said was "as long as it's not copper, cause that corrodes and leaks and we don't like copper"... I understand to get the copper pipe up to the same performance standard as the $4/m flexible pipe, they now anneal it in a rubber sheath, so it looks, err, like the flexible pipe.
The only issue with the $4/m flexible pipe is it needs to be replaced every 7 years. Which is the validity of the gas certificate anyway. I don't really have a problem with that requirement.
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NZ Navy aground in Samoa
in MarineTalk
Posted
That would be even more embarrassing, the guy with all the gold braid and fancy dress (can't remember his official title, something like supreme rear commodore sea lord) said that Manawanui had just completed a 'maintenance period' before this deployment, AND passed all of their testing before being signed off...