All new Dufou 41

flaming

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Saw this boat in the flesh at the Boat Show yesterday. Went on board out of curiosity compared to my Dad's old 40.

Strewth it's a big old beast! So, so much bigger than the 40. Honestly, you cannot compare them from an interior volume point of view. Accommodation / length seems to have taken another massive leap forward recently.

Sales chap confirmed that they have a performance version in the works with a bigger mast, proper main traveller etc. That could be an interesting prospect as a performance cruiser. I suspect then the old 40, as much as I really, really loved that boat, would only have the edge upwind in less than 15 knots.

The looks will of course be a matter of personal preference. I'm not a massive fan, but I suspect I could live with them given the interior....
 

dune16

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They just get bigger and bigger. I bought a Dufour 430 new in 2021 but I have to say, after living with it for 12 months i was left very disappointed with overall build quality vs my previous Jeanneau 389. We bought the 430 on the basis that interior felt more roomy than the equivalent new Jeanneau model... but I wish we'd bought the Jeanneau instead. We sold the 430 and are now loving being back on a Beneteau group product (Lagoon). Not a single thing has broken since we got it in October last year. Perhaps we just got a "lemon" but I won't be buying another Dufour 😕
 

Baggywrinkle

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If it doesn't feel like a man-cave, with a distinct smell of diesel, mildew, and stagnant seawater - then it doesn't deserve to be afloat. Bah Humbug!!!

Incidentally .... for all those that can't grasp the properties of modern adhesives, and feel bolts or screws would do a better job fixing windows ... bolts and screws create localised stress points which are not desirable for large window installations or important joints. Modern adhesives and sealants far outperform traditional fixing methods, from attaching windows to anchoring bolts in concrete.

Here is a snippet from Sikaflex about deck to hull bonding ....

The naval architect can be confident that a deck and a hull that have been built separately of differing materials can be brought together to form a single unit that is both strong and durable. The tolerances in alignment between the two parts need not be quite as close, because minor discrepancies can be taken up by the gap filling property of the adhesives. The strength of the adhesives makes mechanical fixings redundant and the resilience absorbs much of the stresses and strains from temperature changes, impact shocks and torsion forces.

https://nzl.sika.com/content/dam/dm... - Structural Bonding Marine Applications.pdf

It is materials like this that enable modern designs to depart from tradition, which is a good thing as it gives the designer more design freedom, and the buyer something new and different. I quite like the look of the Dufour and the interior ambiance is excellent.

Just like in housing, where we can now have oodles of structural glass and thermally efficient windows enabling light to flood in, whereas in the past windows were smaller due to construction constrsaints and thermal efficiency, making interiors dark and devoid of light.

But .... the products of today will look dated tomorrow ... it was always so .... and there is a corollary ... the products of today will look fugly to the man who lives in the past. ;)
 

flaming

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If it doesn't feel like a man-cave, with a distinct smell of diesel, mildew, and stagnant seawater - then it doesn't deserve to be afloat. Bah Humbug!!!

Incidentally .... for all those that can't grasp the properties of modern adhesives, and feel bolts or screws would do a better job fixing windows ... bolts and screws create localised stress points which are not desirable for large window installations or important joints. Modern adhesives and sealants far outperform traditional fixing methods, from attaching windows to anchoring bolts in concrete.

Here is a snippet from Sikaflex about deck to hull bonding ....



https://nzl.sika.com/content/dam/dms/nz01/4/Sika Marine Application Guide - Structural Bonding Marine Applications.pdf

It is materials like this that enable modern designs to depart from tradition, which is a good thing as it gives the designer more design freedom, and the buyer something new and different. I quite like the look of the Dufour and the interior ambiance is excellent.

Just like in housing, where we can now have oodles of structural glass and thermally efficient windows enabling light to flood in, whereas in the past windows were smaller due to construction constrsaints and thermal efficiency, making interiors dark and devoid of light.

But .... the products of today will look dated tomorrow ... it was always so .... and there is a corollary ... the products of today will look fugly to the man who lives in the past. ;)

Yeah.... Shall we say my faith in what sikaflex have to say about window bonding is being somewhat tested by the persistent drip onto my chart table from my sikaflex sealed window....?
 

Baggywrinkle

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Yeah.... Shall we say my faith in what sikaflex have to say about window bonding is being somewhat tested by the persistent drip onto my chart table from my sikaflex sealed window....?

Is that a manufacturing fault or a sikaflex fault?

I do agree that fixing it will be a bu66er of a job, but the boat manufacturer not having a bulletproof assembly procedure is more likely than a problem with the adhesive IMO.

We glue all the vehicle windows in place on the cars we manufacture, millions of them per year, they don't leak. Occasionally some muppet will park one on a kerb when the adhesive hasn't cured ... so it cures with twist in the body .... when the car is then returned to level and driven around for a few months, the windscreen is prone to crack at the slightest provocation.
 

flaming

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Is that a manufacturing fault or a sikaflex fault?

I do agree that fixing it will be a bu66er of a job, but the boat manufacturer not having a bulletproof assembly procedure is more likely than a problem with the adhesive IMO.

We glue all the vehicle windows in place on the cars we manufacture, millions of them per year, they don't leak. Occasionally some muppet will park one on a kerb when the adhesive hasn't cured ... so it cures with twist in the body .... when the car is then returned to level and driven around for a few months, the windscreen is prone to crack at the slightest provocation.
Sikaflex fault.

There has been lots of dialogue... They now admit that the adhesive degrades under UV. So using it to fit a window where UV can get to the part bonded means it eventually fails. We now have instructions to refit the window including protecting the bonded part from UV. That's a change to the previous instructions....

So yeah... Adhesives are great, until they aren't.
 

Baggywrinkle

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Sikaflex fault.

There has been lots of dialogue... They now admit that the adhesive degrades under UV. So using it to fit a window where UV can get to the part bonded means it eventually fails. We now have instructions to refit the window including protecting the bonded part from UV. That's a change to the previous instructions....

So yeah... Adhesives are great, until they aren't.

Ah, very true .... the windows are supposed to have a shade band on them to prevent the adhesive from being exposed to sunlight. That is what the black dots and black surface around car windows do.

The black surface is where the adhesive is applied, and it shades the adhesive from UV, the dots provide for a gentle heat gradient across the glass when in full sunshine.
 

SaltyC

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Yeah.... Shall we say my faith in what sikaflex have to say about window bonding is being somewhat tested by the persistent drip onto my chart table from my sikaflex sealed window....?
But then a Salesman would blow the company trumpet. I too am sceptical of bonded windows. OK when newbut in 15 years time? May be an irrelevant question as the manufacturers claim beyond design Life.

Very environmentally friendly.
 

Frogmogman

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But then a Salesman would blow the company trumpet. I too am sceptical of bonded windows. OK when newbut in 15 years time? May be an irrelevant question as the manufacturers claim beyond design Life.

Very environmentally friendly.

I’m not totally convinced by bonded windows either. We’ve already had to remedy a leak on one of the bonded coach roof windows on our Sun Odyssey 349. No leaks on either of the windows in the hull so far (thank goodness). They didn’t stop us buying the boat as it ticked so many boxes for us, but I’d have preferred the boat not to have them.
 

lustyd

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I’m not totally convinced by bonded windows either. We’ve already had to remedy a leak on one of the bonded coach roof windows on our Sun Odyssey 349. No leaks on either of the windows in the hull so far (thank goodness). They didn’t stop us buying the boat as it ticked so many boxes for us, but I’d have preferred the boat not to have them.
It's not like traditional windows don't leak, and in both cases it's equal pain of cleaning goop off of everything and re-sealing. As long as the glass/perspex/whatever is flat and easy to source I don't see an issue. The various moulded and impossible to replace windows were the real issue.
 

ashtead

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The only time I’ve seen the Rustler of that length was when we followed one into Bembridge -it made its way safely to the hammerhead pontoon -I think it was on way to home in east anglia. The problem with a 57 in Solent at least might be finding a berth in many places but would certainly have a look - . My impression from seeing the 42 is that the layout below isn’t perhaps suitable for us though even if you can find one without teak decks etc.
 
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