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Post by Jim on Feb 6, 2020 19:38:52 GMT
Beware of Badgers, they are legion
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Post by naughtyfox on Feb 6, 2020 20:26:22 GMT
beats a bleeding fox any day, innit? I wonder if we will see you in your little electric boat this Summer. Have just made a phone call and that kicks our summer adventures into action. We have the 10-weeks plotted on paper with a few possible scenarios pencilled in, but can't make any firm plans until we get the dry dock dates/possibility knocked into shape. This is the result of our hull survey last June - just minor work but gotta get it done. Couple of shoe plates to make our sacrificial edges wider in two places. And perhaps to get some other minor welding done, such as two new scupper tubes (old ones rusted through but duct tape around them has worked fine for the past 3 years). After that our boat should be in pretty good shape, well, almost perfect. I do worry about our tiller stock tube (also known as rudder stock tube) but what can one do about that? Drain the fuel tank and cut the back of the boat open? How can we even know what kind of condition it is in - might be fine. Don't other people think about their tiller stock tubes and how corroded they are? (not ours, just an example)
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Post by Deleted on Feb 6, 2020 20:41:23 GMT
If it goes through the diesel tank itself I think it would be ok as the oil in the tank would tend to prevent internal rusting. I have seen a boat sunk by the elum tube rusting through but that was one which did not go through the fuel tank so was subject to corrosion from inside.
It's a bit of a hazardous area yes.
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Post by Isambard Kingdom Brunel on Feb 6, 2020 23:32:03 GMT
If it goes through the diesel tank itself I think it would be ok as the oil in the tank would tend to prevent internal rusting. I have seen a boat sunk by the elum tube rusting through but that was one which did not go through the fuel tank so was subject to corrosion from inside. It's a bit of a hazardous area yes. Might be the inside, that is in the water that rusts, just a thought. Easy fix, rudder stock out and new tube inside the old one welded top and bottom.
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Post by Deleted on Feb 6, 2020 23:40:24 GMT
Yes the wet bit is going to be prone to corrosion but if the inside bit is exposed to damp it's going to go through faster than just from one side. Plus the inside bit, if it doesn't go through the tank, is a hidden area definitely exposed to damp and depending on the angle of the uxter plate it could well end up with water sitting around it which would be a nasty situation and probably not noticed as it is not a very accessible area.
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Post by naughtyfox on Feb 7, 2020 5:13:20 GMT
Ours goes through the tank, but water can get up the tube, I guess. Never having seen the whole thing cut open, I don't know. Will ask the welder his thoughts.
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Post by Deleted on Feb 7, 2020 8:41:19 GMT
Easy fix, rudder stock out and new tube inside the old one welded top and bottom. How are you going to get the rudder stock out if it's a welded on blade? I assume it would drop down beside the skeg due to the clearance in the tube. Once you have welded a (smaller diameter) tube inside the old one as suggested is there still going to be clearance to get the rudder stock back up or will the skeg now be in the way...
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Post by bodger on Feb 7, 2020 10:28:23 GMT
Easy fix, rudder stock out and new tube inside the old one welded top and bottom. How are you going to get the rudder stock out if it's a welded on blade? I assume it would drop down beside the skeg due to the clearance in the tube. Once you have welded a (smaller diameter) tube inside the old one as suggested is there still going to be clearance to get the rudder stock back up or will the skeg now be in the way... you are over-thinking this. once fabrication and welding is involved anything is possible.
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Post by Deleted on Feb 7, 2020 10:36:47 GMT
How are you going to get the rudder stock out if it's a welded on blade? I assume it would drop down beside the skeg due to the clearance in the tube. Once you have welded a (smaller diameter) tube inside the old one as suggested is there still going to be clearance to get the rudder stock back up or will the skeg now be in the way... you are over-thinking this. once fabrication and welding is involved anything is possible. Yes but it's still nice to be able to drop the rudder and stock down beside the skeg to help with removing the tailshaft for example. It's a basic part of the design that there is enough clearance in the tube to let you do that. I suppose the next size down would only reduce the hole size by about 15mm or so but it -could- made rudder removal more awkward in future. Yes I always overthink this sort of thing but having removed a narrow boat rudder in this way I realise why the tube is as wide as it is and not much closer to the size of the rudder stock.
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