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Smelly Contessa!!!

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Colin Pritchard View Drop Down
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Post Options Post Options   Quote Colin Pritchard Quote  Post ReplyReply Direct Link To This Post Topic: Smelly Contessa!!!
    Posted: 11 Oct 2009 at 7:22pm
Doug
I don't know how to post an image on the forum, but if you email me (find the address in the online handbook) I will send you a sketch.
Colin Pritchard
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George Isted View Drop Down
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Post Options Post Options   Quote George Isted Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2009 at 1:14pm
Colin, some pictures on the forum would be great. it would tell a thousand words and all that.
 
You can post a picture either by cut and paste or click on the "Insert Image" button as the top of the "post reply" screen.  It should be the 7th button from the left.
 
In particular a pic of the gap as the aft end of the bilge would be handy.  I'm not aware of having a gap here on Concerto but then I don't have an overly smelly bilge (yet).
George Isted
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James Moore View Drop Down
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Post Options Post Options   Quote James Moore Quote  Post ReplyReply Direct Link To This Post Posted: 19 Oct 2009 at 5:46pm

Doug,

I could possibly do better than that! I see you are located in Plymouth - as am I - I could meet you and show you if you would like. Otherwise I could draw a picture and either send it or attempt to load onto website - not sure how but I could try!

James Moore
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doug View Drop Down
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Post Options Post Options   Quote doug Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2009 at 9:29pm
Colin....
 Thanks very much for the offer.  It looks like I could get the inside information from James.
 
James....
 If you could post a rough sketch to the address in the handbook I would be most grateful (Brian Bird - Genie).   I see we live pretty near each other. 
  My swinging mooring is lifted at the end of the month so I have come out of the water just today. The boat will be ashore in Millbrook until March.
                            ..........Regards  Brian


Edited by doug - 21 Oct 2009 at 9:30pm
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James Moore View Drop Down
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Post Options Post Options   Quote James Moore Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2009 at 5:52pm
Brian,
 
Sorry to delay in replying - been away.
I am going to write a fuller description of what we did for George to post on website.
I am in St Germans so would be happy to meet up either at my boat or yours. I think my details are in the members list - phone etc - give me a ring.
James.
 
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Colin Pritchard View Drop Down
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Post Options Post Options   Quote Colin Pritchard Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2010 at 1:38pm
An update on this for anyone interested.
Having thought about this for a long time I decided that the best job was to fill the void with epoxy resin. The job is now done, method as follows:
I sealed the gap at the aft end of the bilge using epoxy putty, accessed from inside the boat, then drilled a 10mm dia hole at the highest point on each side of the forward end of the keel on the outside. With the lower drain holes (drilled earlier to drain the void) covered with duct tape I then filled the void via the upper holes with water. The volume of water that drained back out, after removing the duct tape gave an idea of the volume of the void at around 7 litres, and it showed that the void was connected port to std at the forward end of the keel
I then flushed out the void using degreasers etc to try to clean the inside as much as possible.
Things were then left over the winter to allow some measure of drying out.
Last week, I built a temporary tent around each side of the keel and set a fan heater going inside to get things as warm as possible and to aid the flow of the epoxy. The lower drain holes were sealed with duct tape and epoxy was mixed in 0.5 litres batches. This was squirted into the upper holes using old 0.5 litre domestic hand soap dispensers and fairy liquid bottles via short lengths of 10 mm tubing pushed into the upper holes.
Progress of void filling could be monitored by tapping the void area. As predicted, 7 litres of epoxy went in before it got to the top holes.
After the epoxy had hardened the upper holes were plugged with epoxy putty and all holes have been further sealed by cutting back over a small area of the gel coat around each hole and rebuilding with epoxy and glass mat.
We should now have a non smelly boat!!


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JohnF View Drop Down
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Post Options Post Options   Quote JohnF Quote  Post ReplyReply Direct Link To This Post Posted: 20 Feb 2014 at 11:40am
Hi, now in 2014 I'm just in process of doing the same with my boat, having tried all sorts of other ways to eliminate smells I'm following James Moore's "technical paper" and your notes - very helpful and giving me the confidence to drill holes in the hull! As predicted several litres of horrible black fluid were released and we're now working through a cycle of cleaning and flushing in preparation for filling the void. My question is what epoxy might be recommended?
Factors I think are - sufficiently liquid to be easily injectible and flow to fill all spaces, not too hot in curing, permanent seal (particularly from inside bilge) and providing a solid base for hull repair (to be completed with mat and resin). I have wondered about injectible closed cell foam but suspect that if a reasonably priced standard epoxy is the answer - but would really grateful for suggestions of the particular epoxy to use.
Thanks.
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Colin Pritchard View Drop Down
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Post Options Post Options   Quote Colin Pritchard Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2014 at 10:54am
Hi JohnF
Apologies if this reply is not soon enough after your query.

We used Wests epoxy, and took some time researching the best kind of hardener to use with it. We needed a hardener that would allow the mixture to be as runny as possible, bearing in mind we were doing the job outside in March. I can't remember which hardener (fast or slow) we ended up with, but it worked fine and I think we used around 10 litres of epoxy (which is expensive so look for someone who can supply a large tin!). Waiting for a warmish day was frustrating and in the end, to get the job done I built a temporary polythene enclosure around the keel, to keep the cold out while we injected the epoxy. We mixed the epoxy in small quantities, around .5 litre at a time, and injected it via a narrow tube inserted into predrilled holes in the keel side, working our way up from the lowest point. A hole is needed near the highest point to allow air to escape. I plugged each hole with a small wooden plug, as we proceeded, these were drilled out and plugged with epoxy after the main job was finished. Planning was key! The whole operation including erecting the polythene tent to finishing injecting was about 3 hours. Removing the plugs and finishing off was done a few days later. Hope this helps.
Colin P
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Post Options Post Options   Quote Colin Pritchard Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2014 at 10:58am
Just realised that some of my reply doesn't match my earlier post, describing what we did, sorry about that. I should have read through the previous posts first! The earlier post is the more accurate. I hope there's no confusion.
Colin P
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Post Options Post Options   Quote JohnF Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2014 at 12:38pm
Many thanks, this is useful - and great timing as we're just waiting for this dry warm weather to complete drying out the bilge (vented via the drain holes and the original interior hole) and curing. Thanks.
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