|
|
Post by alessandro1975 on Dec 10, 2019 8:15:23 GMT
|
|
|
|
Post by MalcolmP on Dec 10, 2019 11:16:14 GMT
|
|
|
|
Post by alessandro1975 on Dec 10, 2019 11:26:23 GMT
edited , sorry
|
|
|
|
Post by alessandro1975 on Dec 10, 2019 15:22:29 GMT
|
|
|
|
Post by alessandro1975 on Dec 10, 2019 15:23:32 GMT
|
|
|
|
Post by alessandro1975 on Dec 12, 2019 7:26:35 GMT
up..have you seen an equal problem?
|
|
|
|
Post by MalcolmP on Dec 12, 2019 8:29:04 GMT
Hi Alessandro
Surprised no-one else has yet commented.
The photos do indeed show it is a serious issue. I have not in the now 19 years of running this site seen or heard of anything similar.
It would be well worth inspecting the mast step both at deck level and where the compression post stands on the keel. Many Jeanneau of this era had plywood inserts that if frequently immeressed through bolt leaks rotted slowing the mast rig to become loose and flex
I think though you must seek an expert opinion from either a well regarded surveyor or respected boatyard.
Bulkheads can be repaired in situ as the original will have been installed before the deck was bonded to the hull. I don't know on the SO40 if the bulkhead was glassed to the hull and deck or if it is simply slotted into mouldings then bonded as is the case on boats like the 39i
One technique for joining bulkheads with an epoxy bandage see this Sailife video
Please do keep updating us on what you find
Malcolm
|
|
|
|
Post by jy51 on Dec 12, 2019 9:18:56 GMT
Malcolm,
I think no one replied simply because the photos are quite shocking! There is very little one can say, clearly a surveyor would be the best person to respond. My thoughts are, that to break a bulkhead in this manner, considerable flexing of the hull took place, wether or not this has caused catastrophic damage I and probably most of us are not in a position to say. I can only wish Alessandro1975 all the luck in having the problem diagnosed and possibly repaired.
|
|
|
|
Post by alessandro1975 on Dec 12, 2019 9:46:07 GMT
 www.23hq.com/grisolfa/photo/63438564/originalThanks for the comments I did inspect the damage to a technician. his report is that the rigging connected to the bulkhead pulled very hard and the wood gave way at that point the technician has dismantled the floor, dismantled carpet, dismantled furniture, and everything is perfect and healthy. the bulkhead under be resined to the hull. he says that jeanneau after 2000 modified the bulkhead with a new design, to be stronger at that point. in fact jeanneau post 2000 are different. I mean to be correct that the day I suffered the breakdown all the rigging was not well adjusted, I was sailing with motor, without sails and I hit a series of waves, then I changed direction. thanks again to everyone. |
|
|
|
Post by jy51 on Dec 14, 2019 11:49:15 GMT
www.23hq.com/grisolfa/photo/63438564/originalThanks for the comments I did inspect the damage to a technician. his report is that the rigging connected to the bulkhead pulled very hard and the wood gave way at that point the technician has dismantled the floor, dismantled carpet, dismantled furniture, and everything is perfect and healthy. the bulkhead under be resined to the hull. he says that jeanneau after 2000 modified the bulkhead with a new design, to be stronger at that point. in fact jeanneau post 2000 are different. I mean to be correct that the day I suffered the breakdown all the rigging was not well adjusted, I was sailing with motor, without sails and I hit a series of waves, then I changed direction. thanks again to everyone. I'm probably the last person to give an opinion, but I still find it difficult to understand why Jeanneau or any boat builder would secure standing rigging to a wooden bulkhead. I was under the assumption that all sailing boats had re-enforced structural points that took the load. This can clearly be seen on many boats with S/S plates bonded to the hull to spread the load and in some cases meant steel rods past through and were not attached to the wooden interior structure. |
|
|
|
Post by rene460 on Dec 15, 2019 10:59:16 GMT
Hi Alessandro,
Like others I am dismayed to see such damage. I think you are right in your assessment of the direction of the force. I would have thought the bulkhead would normally be sufficiently strong, but that corner detail for the door and its location are not helpful.
It is hard to estimate the dynamic forces in the rigging in sailing, but crashing over waves with loose rigging, forces would certainly be very high if the mast is able to whip around and be pulled up to a sudden stop when the shroud becomes tight. Certainly, loose rigging is never good.
I can think of some ways to strengthen that bulkhead if I was caught far from the needed services, but I think it would be best to talk to a marine architect for a properly informed solution.
rene460
|
|
|
|
Post by alessandro1975 on Dec 16, 2019 7:56:14 GMT
the technician has prepared a project to repair. must remove 5mm per side. and double carbon fiber reinforcement it is not complicated. explain that many sun odyssey40 pre 2001 have this problem.  |
|
|
|
Post by johannes on Dec 16, 2019 10:59:41 GMT
I'm probably the last person to give an opinion, but I still find it difficult to understand why Jeanneau or any boat builder would secure standing rigging to a wooden bulkhead. I was under the assumption that all sailing boats had re-enforced structural points that took the load. This can clearly be seen on many boats with S/S plates bonded to the hull to spread the load and in some cases meant steel rods past through and were not attached to the wooden interior structure. There are steel reinforcements that take the point loads from the shrouds, but the entire hull-deck-bulkhead structure takes the distributed load from the rig. It is not uncommon for the wooden interior to contribute to the loadbearing structure. |
|
|
|
Post by so40gtb on Jan 2, 2020 2:38:37 GMT
The pictures show the attachment of the shroud base to the bulkhead, which I believe to be a later modification to the SO40, which our boat has. The point of this modification was to transfer loading from the side decks and coach roof to the bulkhead, but as your pix show, this merely relocated the point of failure. The dynamic action that might have caused this is not something that we've seen on our '00 SO40, in 7 years of ownership. I suspect that the rig tuning may have not been optimal, causing a resonant loading that amplified the forces to the point of bulkhead failure. We experienced something of this sort when we chartered a Delphia 37 a few years ago and it went into severe mast pumping when tacking into >20 kT winds. The best case is for all upward rigging forces to be attached to the stringers via steel connections, with the rig maintained in a state that precludes pumping and other destructive dynamics.
--Karl
|
|
|
|
Post by colorado on Jun 22, 2020 15:53:15 GMT
the technician has prepared a project to repair. must remove 5mm per side. and double carbon fiber reinforcement it is not complicated. explain that many sun odyssey40 pre 2001 have this problem. Hello Alessandro1975, I am looking at a 1999 SO40 with the same pattern of bulkhead cracking, I love the boat but want to make sure that I have it repaired correctly. I am wondering what I can expect for a repair cost assuming all things are equal. Above all I want this boat to be as safe as possible. Please let let me know, thanks |
|
|
|
Post by tomina on Jun 23, 2020 15:56:21 GMT
Hi everybody.
I have a 2001 SO40 with this same problem. While it’s reassuring to know others have the same fault I am not too worried about it. In my case I first noticed this some ten years ago and formed a couple of Metal bracket repairs out of sight I have added a ‘cover’ over the visible crack so I don’t have to look at it! And in all this time have never noticed a worsening of the problem so I just accept it as is..
Michael Solano & Julia Too
|
|
|
|
Post by alessandro1975 on Aug 28, 2020 9:13:44 GMT
il tecnico ha preparato un progetto da riparare. deve rimuovere 5 mm per lato. e il doppio rinforzo in fibra di carbonio non è complicato. spiegare che molti sun odyssey40 prima del 2001 hanno questo problema.
sorry if I answer only now
the repair in Italy costs 1000 euros + or -. with guarantee of perfect work.
it is good if you put the photo of your bulkhead |
|
