Ex Machina
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Posts posted by Ex Machina
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8 hours ago, ynot said:
My cylinder has a tempering valve to avoid being to hot out of tap.
Also I would have thought that the relief should not vent at engine temp/pressure on a modern marine small engine which should be a low psi header tank cap which usually is only about 7psi vs a car which is up 13 psi.
Seems wierd...maybe some fuckery going on for it to relieve?
The HW cylinder has a pressure relief valve and it definitely opens on mine when the water gets to the temp as the engine which I’m guessing to be 80-90 degrees ?
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Installed a 40L one and copied bad kitty ? By putting an inline tap in the loop from engine to tank . It gets stupid hot otherwise and relief valve wastes water too , it will open and stay open if you are motoring for long periods . Also put a 500W 230V element in and hope to run it off the inverter via solar on sunny days .
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3 hours ago, Frank said:
I had a read, do we have any members who are experienced or legally qualified on the mechanics and legalities of charitable trusts ?
Na you will have to head over to RAYC
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12 hours ago, K4309 said:
Question, what do people do on the prevention front?
I'm on a mooring so don't have direct access to fresh water to flush the whole system every time I leave the boat. I do put 4 cups of fresh water in so that the pump and seals are in fresh water and don't get calcified (which stuffs seals and makes the pump fail).
White vinegar sounds very easy, and is cheaper than water fairly much.
I do see a heat exchanger clean in my future, meaning I need to get some Rydelyme or Barnacle Buster, I wonder if a pre-emptive flush with one of those will prevent any future risk of blockages?
Apparently a dose of vinegar once a day will prevent calcification of the pipes . I have had good success eleminating holding tank stink with no-flex digestor . After researching the heck out of it it’s basically an oxygen bleach , flush a tablespoon once a day through your system and it neutralises the sulphur dioxide ? Stink . It has the added bonus of dissolving organic solids but it won’t shift calcium deposits . Once it runs out I will be using off the shelf supermarket oxygen bleach for a fraction of the price . It’s nice opening up the boat and not being greeted by a potpourri of rotovegas and diesel .
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What Carpe Diem said . I had a similar issue to you just a few weeks ago , calcified uric acid caused by reaction with salt water .
Unfortunately it was so blocked the Hydrochloric acid couldn’t get to the standpipe in the holding tank and there was no safe way to let the acid back out . Manual removal of the pipe was the only way to clear it .
Highly recommend a downloadable book called “getting rid of boat odours” by Peggy hall . She knows her sh*t and marine heads , there’s plenty of info on maintaining pipes and systems so they don’t block …vinegar and acid based flushes feature regularly .
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4 hours ago, motorb said:
Given the reverse sensitivities around Western Springs, Panuku shutting down Mt Wellington via a backroom deal, and Pukekohe raceway being torn up for terraced housing I'm not sure Motorsport is going to fare any better.
Really best to just walk around your neighborhood and join a Golf club, because that's all that will be left before long.
Yeah or bail from Auckland . Plenty of yachting in the regions just not as many boats or black sails .
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4 hours ago, Psyche said:
To pretty much everyone who isn't experienced, every shark is a great white, I do tend to agree with the overreaction and cotton wool approach but overall it's better for everyone.
Take OSH for example, NZ used to have shocking workplace injury rates and as much as everyone complains workers in general have more fingers, better hearing and live longer now than in previous era's. The stories from the good old days when you could catch a snapper from the end of the sh*t pipe, drink 6 Waitemata Bitters, light up a fag and get into the Phase 3 Vanguard with no seatbelt (or brakes), drive home to re-roof the house with supersix that you cut with a skilsaw up a ladder with no mask then head to work on Monday where you operated the steel puncher with no earmuffs or eye protection, yeah the good old days!
In this case YNZ has advised clubs directly to not run any racing until the repair is made and the harbour has flushed (so to speak)
No one is stopping anyone from swimming, boating or even drinking out of the harbour, its your choice
Yeah I remember those days too …you left out the bit where you died of silicosis , asbestosis , lung cancer , random types of cancer or a combo of 1 or two of the above .
K3409 and Carpe Diem are missing from that picture . Need a couple of blue hats with tablets peering into the hole
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1 hour ago, harrytom said:
According to the guys who work/paint the bridge ,they are hammeheads,come up to the warm shallows to drop their pups,now f you want GW go to tipitai island (cake) on the Manukau,its their breeding ground. Theres a good book out by Mavis Brambly "sea cockies of the Manukau" her family use to catch them for the livers and render down for oil.
I remember this one caused a stir because they filmed themselves “riding” the shark as they towed it to shore .
I used to regularly surf not far from tipitai on the north head and we used to sh*t ourselves to be honest . Most of the northern harbours and inlets on the East and West Coast are nursery areas for GWs .
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2 hours ago, Steve said:
Despite all the scaremongering, none of the sailors (or triathletes) got sick at the Rio Olympics. City of 13 million v Parnell suburb of 8000.
It's a bit like all these fronts coming through being described as "atmospheric rivers".
Over reacting is now the norm.
Or the collective gasp when a great white is spotted in the Waitemata . They’ve been breeding in Auckland since the beginning of time
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43 minutes ago, Psyche said:
Its pretty clear the Rahui is an expression of a specific cultural approach to hundreds of tons of sh*t pouring in the harbour as a result of dilapidated infrastructure, 110 year old pipes anyone? They not saying no boating or any other activity, they are lending weight to a pretty common sense position based on e coli levels in the Waitemata. I am sure you can go for a dip if you want or race a yacht but showing a bit of solidarity from time to time isn't the end of the world. What really needs to happen is a massive upgrade of our infrastructure which is groaning under the load of massive population increases, anyone remember the power cable debacle a few years ago?
You mean the CBD one in the early 90s ? With the container ship plugged in providing power to restaurants and the like .
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12 minutes ago, CarpeDiem said:
Hmmm lets see...
- E. coli levels in the Waitematā are at record highs
- all 23 monitoring stations, from Herald Is, down to St Helliers are reporting "very high risk"
- watercare has urged that people refrain from recreational activity on the water
- the water around the overflow outlets is black, it's absolutely wreaking of sh*t and are in the worst condition I have ever seen them - I am surprised that we have not had an algae bloom yet
People can and do fall overboard, gear can and does end up in the water...
If you have never dragged your sail or your sheets through the water, if you have never taken a face full of water over the bow when setting up for a sail change then you aren't trying hard enough.
Committee's have a responsibility to their club members to weigh the available information, assess the risk and make decisions.
I am no water scientist, but given the information, the visible untreated untreated sewerage exiting the overflow pipes and the advice publicly available, I think the decision to cancel is the right one.
Where can the coastal classic start be shifted to that’s safe from poo ?
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2 hours ago, GFT said:
If you can, find a Yammie 8hp 2stroke with the high thrust leg, shifts along an SR26 at 7 knots. Best out board I've ever used on a race boat. 90% of the 8.5 multi fleet use them. Mines never been flushed or had a water pump replaced in my ownership. Motored to Auckland and the bay a couple of times in no wind. Bonus is it has a rectifier so I charge the battery and use the auto pilot. Only thing to ever break was the gear shift lever. The key is to run them 50:1 and run them out of fuel after use.
What about the 4hp outboard on my raceboat ? That got your ass to Auckland for the last coastal !
But yeah I’ve had the same model yammy 8hp with high thrust prop on a previous boat . Did multiple 12-14 hr trips to Auckland and it never missed a beat . Also a bonus is Yamaha parts service , they are very good .
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18 hours ago, Priscilla II said:
Sound track will give you a headache.
Imoca style foils would maybe betterer.
Yeah dunno if you want to do ass dragging and porpoising in a 111 ft cruiser ? You’d have a massive interior tidy up to do when you got to your destination .
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Seems like it was a medical emergency and mast was entire before tying up to the ship , broke the top off from hitting the ship by the looks .
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14 minutes ago, Jono G said:
Anyone know the boat with the broken mast in the news this morning? Looks reasonably fast. Was it abandoned?
Don’t know the boat but it looks like a later model Beale 30 something with the single continuous window
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Well it did start .
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29 minutes ago, Psyche said:
Boards are one thing, foiling doesnt scale all that well, plus in the ac there were combined closing speeds of 60-90kts. Assume that everyone is apparent wind sailing at 20,30 kts multiplied by x number of boats in a sport where crossing your opposition whenever you can is tactics 101...
Then there’s insurance ….
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15 hours ago, ynot said:
Yep used that form and bent by hamd.. Only had to use an extension bar once when the tail got short.
I used my mockup pvc to make to jog about right and marked 100 mm graduations along it after the main bend and used the opposite direction to create the bow bit by bit.
I brought t 6m lengths of stainless so had plenty of leverage but a bit wasteful... Anyway had to try it and it worked.
I'm sure if I went for a tighter radius I think sand filling would be required to stop kinks in this form. Of Bending or maybe a groove in the form and the opposite on a roller with lever on the outside.
I practiser with aluminum tube first cause I have it.
Easier to bend than ya think.
Make sure to clamp the offside to the table so it doesn't roll.
Oh and don't slip and hit ya head on the drill press.... Duh.... And knocked me bloody beer off it.
Excellent work man !
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11 hours ago, Romany said:
Has anybody used Durepox marine paints?
I'm near to repainting newly glassed decks and cabin top - plus topsides repair ( full top sides next year) and at the decision point. Ive no idea cost comparisons/ application differences. At this stage just interested in suitability and mostly - durability
Yep got it below the waterline on a trailer yacht . It’s apprently 12 years old and still looks like new . Also have it in black on the gennaker prod and on the rudder too . I didn’t apply it myself I have a clever mate that’s good at that sort of thing , he has a trick of mixing fairing compound into the primer coats so it works as a highbuild . 2 years out in the weather and the prod still looks like new .
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4 hours ago, raz88 said:
In contrast, we had an Elliott 10.5 with an 18hp, and it motored beautifully. Very similar boat and probably the exact same engine (volvo 2002). Never had any issues like that and motored/maneuvered in plenty of bigger breezes than 30kn.
There was a y11 I know of that only had 13hp, on a shaft, and it was a bit gutless, but has so far survived over 40 years on that motor and been and done a lot of places/stuff.
There are a lot of variables here. Sail drives tend to be more efficient than shaft. Prop size, type and pitch. Is the engine operating properly etc.
To provide some reassurance to the OP, the beneteau first 40.7, of which there were 700 or so built, were 40 feet and sold standard with a 30hp (optional 40). If it was wildly under what was needed to drive the boat in a blow they'd be going on the rocks all over the world.
Yeah sorry It was the 13hp engine and it’s still pop popping
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This topic reminds me of the time we nearly ended up on the rock wall behind the squadron inside the marina ….Y11 with an 18hp and 30 knot SW .
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I got lambasted on SA by a Texan boatbuilder for using the term pushpit . Apparently they called it the aft pulpit/aft safety rail or some other things. He really hurt my feelings
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6 hours ago, Luigi Vercotti said:
We don't have a local sailmaker that I know of, but we have Oborn Marine that does sail repairs. I'll give them a try. I'm just concerned about the 3D to flat nature of a Dodger window, but Oborn's won't say they can do it if they can't.
Uk sails Whangarei was in Christchurch doing clears last week for that cat that came out of Davie Norris shed recently . Shame you hadn’t tee’d up with them being in town .
This Weekend's Achievements
in MarineTalk
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I installed a quick . Nearly got an isotherm but read many forums and they seem to have a leak issue with element gaskets . The quicks were a bit cheaper too and have several element wattage options . Bought it from Tenob in Auckland .