bertram31.com

Yannis

Science is still unable to explain why jealousy so vividly manifests itself each time the unique benefits of Bertram's all-time best seller are brought forward... The accompanying use of pejoratives such as "Hyena", combined with dubious games of eloquence, further complicate this psychological cond...

Yannis

Tony,

It would be a 28!!

Yannis

Bob,

You may consider going to BMW or some other car manufacturer, and ask for a vibrating seat/eye lid detector, combo, LOL !!

Yannis

Rick, That's what I used, XPS foam, extruded polystyrene. However, I was told that had I used expanding foam (not XPS), the insulation would have been better, but then you run into other problems like bulging sides etc. I was also told that there is a foam product that does not expand, you spray it ...

Yannis

Thanx Rick, Perfect, that's how I would imagine it too. When I built my custom refrigerator/freezer, I had my glass guy construct an outer and inner shells with a void for insulation. The shell is only a few millimeters thick glass construction with gel coat on the visible sides. In the void we put ...

Yannis

Does this box have any insulation?
I mean, any foam, or construction type foam (or other) panel? Sandwiched inside the ply sheets?
If not, how does it retain temps, as you describe?
Thanks.

Yannis

Shannon, I have a 1000w windlass which is screwed through a ply backing plate and I’m sure the job was done from below. Furthermore, I had the top glassed to the hull around all the bow area for rigidity but also to avoid water seeping into the anchor locker when during very bad weather the bow dive...

Yannis

I thought he meant glass underneath, but youre right he meant on top. Strange.

Yannis

Francesco, With all your dogs, it’s understandable you don't like cats LOL!! They probably don't like them either! As for coosa, I have nothing against it as neither me nor anybody who I know has ever heard of this name. Perhaps it sells under a different brand name but irrespective of all this, pla...

Yannis

How about simplifying the whole project as follows: Use the ply or coosa of your choice (Id use ply, bc coosa is unknown as a material here). Clean the deck underside as shown in the video with the scraper and pass the alcohol for a full clean. Apply sicaflex on the ply, around the edges and in a ra...

Yannis

I had the same question when I wanted to refresh my 28, by renewing the dull and tired aluminum trim all around the bridge lip, with a shiny stainless new trim. It appears that there does not exist a stainless trim, of any width or thickness, with a similar profile curvature…they all come in rectang...

Yannis

Holy crap, that could have been deadly!!...that's why owning a Bertram is dangerous!! I have a variation of your ply under my gunwales and, contrary to you, I once decided to not ever give it a second thought and forget it forever. Which is what I did. At times, when I rinse underneath to get rid of...

Yannis

Rick,

As these scupper covers receive no stress, you could just prep the surrounding area with a sand paper and bond them with sikaflex. They will not budge until the end of time. No drill no screws.

Yannis

Rick,

There is this tool that attaches to your drill and allows to reach into areas at an angle, like the scuppers' lower screws.

Yannis

So, the answer is yes.

Why do I understand that the more words you use in your reply, the more expensive these windows become! LOL.

Yannis

Great work!
I wish I had your knowledge and skills to carry out such a quality work.
The flying bridge, now that it’s wider, is...almost as roomy as the 28’s, hoho ho !!!

Yannis

This is the holy grail of questions... I had the same question back when I bought my boat. Whoever I discussed it with, each had a very strong oppinion on their choice. Finally, I remained with the waterline decision because my boat was painted "sky blue" and in order to pass bottom paint up to the ...

Yannis

Francesco,

When you will insert these new windows into their frame, do you plan to leave a gap all around within the frame - probably filled in with silicone, or similar - so as to allow for heat expansion AND any downward pressure from the flybridge above?

Yannis

Wil, The construction of the anchor bulkhead (material, thickness, fastening method) is a function of the volume AND weight of the chain/rope that you will carry. From what I can understand from the pictures, the depth of the existing locker is too shallow to safely carry a lot of chain, due to the ...

Yannis

Thank you, Danny, I added the hyphen you suggested.

Yannis

When you say enclosed anchor locker, do you mean completely sealed on the cabin side? What you may find very useful is a glassed vertical surface of around 10cm height, across the bottom of the opening. This will prohibit any chain or rope to slide back during serious wave conditions. It will also p...

Yannis

I envy the emptiness of this bow. The first thing I would do is a bed of... Olympic dimensions!! After the bed, I would place the galley, head, etc where they fit. PS: Do you plan an anchor/windlass combo ? I do, and I hated that each time I pulled up the anchor all the water would drip into the bil...

Yannis

Tony, you're right...electricity has not reached us yet...LOL

I was thinking to not always use the fans - I have two - because they consume electricity and they are a bit noisy.
I'm thinking this hole/duct project quite some time now...who knows, one day it may come true!

Yannis

Carl, stringers, not strakes, you’re right…
Oh well, so long as stupidity stops right there!!

Yannis

Wil,

I hadn't seen separate little strakes forward, like this.
And I haven't seen strakes not symmetrical to the keel line, either!

Yannis

It will be in the way... Imagine wanting to get up at night and stumbling on the rope that ties it down...haha! Alternatively, similar to the idea of the duct, a hole on the cabin roof or the salon ledge above the pillow area, with a scoop that directs the breeze down below. Only problem is that the...

Yannis

Carl, I have the fwd hatch and it creates enough breeze, even on calm days. The problem is that this breeze is funneled from the hatch directly to the door, and the corners of the two beds (where most of your body and head are) are not influenced by it. These two corners remain hot, hot! I have anot...

Yannis

I'd take a good photo, yet better a paint flake, directly to Alexseal. They would know.

Yannis

Interesting points! There exist though in the 35 and above. In the 33 they are placed on the sides of the step, on the bow area above deck. The 28 has a similar step, only it is too narrow to place a porthole, let alone an opening one, where the frame should be more significant. I have seen some ova...

Yannis

Has anyone installed/do you advise in general, to put two small OPENING portholes on the sides of the bow - where your head pillow would be (that is just fwd of the cabin bulkhead) on either side? It gets very hot in the summer and these additions would probably create a draft in the cabin. My fear ...

Yannis

Moving the anchor locker will most probably lead to very minor change. The gain will come from the moving of the main bulkhead aft. I moved mine by 15cm and its a real comfortable difference. You don’t necessarily have to do both sides. If the bulkhead provides structural support to the topsides, th...

Yannis

For heavy/voluminous items that we want to ship within the mainland, we go to the central bus station and ask to put it in the bus’s loading bay, for a small fee. The recipient awaits for it at the other side. As a matter of fact we do the same with ferries, if it is an island destination. For a sma...

Yannis

Do you plan to ever sleep in the boat?
If yes, now is the time to position the new bulkhead aft of its original position, at least on one side.
This will be at the detriment of the settee or the head plus galley side, whichever you choose, or both.
I’ve done it in my 28 and it’s a whole new world!

Yannis

My thought is that a through hull is a hole. It always was. So, the higher from sea level, the better. There are nevertheless some parameters, such as the higher they are placed the more is battery consumption, or the less is the output, however, the stains on the hull is not a parameter. Is it desi...

Yannis

In a small rig the valise type is much better because it can fit where the container type cannot. It is also lighter. Some caution however must be given to not wash/rinse the boat with caustic/chlorine based chemicals that might reach the area where it sits. A friend who has a 8 person container typ...

Yannis

Tony, I agree with the yearly use. That’s why I wanted to test it, as I did. However, I believe that your furnace, any furnace, is a much friendlier environment for scale buildup. Firstly, because it always operates at high temperatures, after all that is its purpose, and we know that scale deposits...

Yannis

Thank you Shannon,

So if the coper got rid of its rust and became all shiny inside, does this mean that the calcium scale has been eliminated too?

We do not have barnacles, at least not inside the heat exchangers, nor worm tubes.

Yannis

I went down yesterday with a friend to see how to tackle the vinegar project. I started the port engine and let it run until the temp reached the usual normal temperature when idling on the hard, Id say around 65-70 C. Despite that temperature (on the temp meter), the water was coming out almost col...

Yannis

Yes, but how did they manage to insert ply between two layers of glass, of which the top one was the original sole?
Unless if the top glass was not original. In which case its outline can be clearly defined and gutted.

Yannis

Tony, thanks.

For us here who are not in the least concerned about freezing, how important is it to make sure that even the exhaust is full of antifreeze or vinegar?
How much should one be concerned about scale deposits alone, in the exhaust tube ?

Yannis

Rick,

Is all the hull sandwiched with this rotten ply? The sides too?
If yes, how will you establish the degree of rot? Will you be cutting through the inner glass until you find dry?
Holy hell, that's some job...

Yannis

Tony, the boat is on the hard so there is no water suction from the seacock. I will turn the intake shut, so that the vinegar doesn't drain under the boat. I agree with the antifreeze quantity, however here we are talking about the raw water circuit, not the antifreeze closed circuit. I have no idea...

Yannis

I have seen two different variations of the above layout:

One with a longitudinal bench, in continuity to the engine box, where the double seat is,
and, another with two longitudinal benches on either side and the wheel on a tower.

Yannis

Perfect! Here’s the plan: Start the engines with water provision through the flush tap, as usual. Let it get hot to over 60C. Turn engine off and remove water source. Connect the 4 liter vinegar jug with a hose, after I shut the seacock. Restart the engine till vinegar is sucked. Turn engine off and...

Yannis

The 31 Bahia only has the forward V berth and a small galley at port and a head at starboard, inside.

There is no salon inside, the salon space is taken up outside by the commanding post on one side and a bench on the other, just forward of the engines.

Yannis

At idle the garden hose without reinforcement doesn’t collapse. I wouldnt touch on the main seacock hose, that is remove it from through hull and stick it into the pail, I will need a monkey to go down there and undo the ring screw and then, as we all know, I will not be able to put it back together...

Yannis

You mean to say that instead of holding the jug high above the engine and let gravity do the rest, I could fill a bucket with the vinegar and drop the hose in it - the other end attached to the intake flush tap? Does the engine suck by itself without the need of gravity? I assume I should turn the p...

Yannis

Carl, Rick, Tony, There is a 4 liter vinegar jug sold in supermarkets at 6% acidity, that I use as is in the washing machine prior to leaving for the summer vacation. It keeps the machine clean of scale, or so i think, because I can't open it to verify. I also use it in my espresso machine and there...

Yannis

If the CLR or any other barnacle buster can sit in there for hours, I don't see vinegar posing a problem. After all vinegar is much less caustic than any barnacle buster. On the other hand, there is no barnacle issue here, just calcium deposits. Now if I manage to get this vinegar into the system wi...

Yannis

Carl, The Yanmar pink cooling liquid is not affected; I'm talking about the raw water which circulates from the intake to the exhaust. So instead of raw water, replace it temporarily with vinegar. Now, I'm not too sure how this can be done but if someone has done it I would like to know if it works....

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