RLWP Posted December 21, 2016 Report Share Posted December 21, 2016 (edited) I see that the hull of Acacia is described as "coppered steel". I'm not sure I understand the term. Does it mean that the six Yarwoods' joshers made like this are less prone to corrosion? Copper clad steel is definitely a thing. No idea if Acacia was built with it, or how much copper would be left now Otherwise, copper in steel is usually a contaminant Richard Edited December 21, 2016 by RLWP Link to comment Share on other sites More sharing options...
James Owen Posted December 21, 2016 Report Share Posted December 21, 2016 Coppered steel is steel with a high copper content. Link to comment Share on other sites More sharing options...
Rob-M Posted December 21, 2016 Report Share Posted December 21, 2016 According to HNBC web site they have 7 FMC boats listed as being of Coppered Steel composite construction. Link to comment Share on other sites More sharing options...
Captain Pegg Posted December 21, 2016 Report Share Posted December 21, 2016 (edited) Copper clad steel is definitely a thing. No idea if Acacia was built with it, or how much copper would be left now Otherwise, copper in steel is usually a contaminant Richard Copper-clad steel is a bi-metallic product i.e. two layers, as the name suggests. I doubt that's what it means. I think the correct language is copper bearing steel which as is hinted above is an alloy steel with a high copper content that has superior corrosion resistance properties and is easier to work. I am pretty sure Laurence Hogg and/or Alan Fincher have previously stated that the middle Northwich boats were constructed using such steel, possibly for anticipated use in estuarine waters. It could equally have been to assist the manufacture of the rounded chines. As for the seven composite FMC boats I would guess the term composite still applies to what we would conventionally understand i.e. metallic sides and wooden bottom? JP Edited December 21, 2016 by Captain Pegg Link to comment Share on other sites More sharing options...
zenataomm Posted December 21, 2016 Report Share Posted December 21, 2016 Does that give them bi-metallic strip qualities? So in the Summer they go round bends easier, or do they tend to hog like a wooden boat does? Link to comment Share on other sites More sharing options...
AMModels Posted December 21, 2016 Report Share Posted December 21, 2016 I remember Acacia coming through the town arm to a Walsall rally just after coming off the dock at NC. The Gardner, if she had it at that time, made a lovely noise. Link to comment Share on other sites More sharing options...
RLWP Posted December 21, 2016 Report Share Posted December 21, 2016 Does that give them bi-metallic strip qualities? So in the Summer they go round bends easier, or do they tend to hog like a wooden boat does? If it gets too hot, they turn inside out Richard Link to comment Share on other sites More sharing options...
Jrtm Posted December 21, 2016 Report Share Posted December 21, 2016 (edited) Does that give them bi-metallic strip qualities? So in the Summer they go round bends easier, or do they tend to hog like a wooden boat does? Wooden boats dont hog there just having a stretch. I belive coppered steel was an attempt to reduce corrosion in very corrosive waters like the wever is. Isn't that an st3 though?It is but not bad price if the box is any good. There was a jp on there not so long ago for just under 5 with box was a bolinder 1113 think it was. I know of a lister ts2 15hp marine unit for 1k for sale Edited December 21, 2016 by billybobbooth Link to comment Share on other sites More sharing options...
dave moore Posted December 21, 2016 Report Share Posted December 21, 2016 When I first knew Acacia she was fitted with a JP3 (2)? The then owner, Frances Beechey, put the Gardner in after a very near miss with an oncoming boat in a bridge hole....the JP was slower to pick up in an emergency! At the time, he dealt in motors in a small way. Dave Link to comment Share on other sites More sharing options...
RLWP Posted December 21, 2016 Report Share Posted December 21, 2016 It is but not bad price if the box is any good The gearbox is an LM100, not a Blackstone Richard Link to comment Share on other sites More sharing options...
Jrtm Posted December 21, 2016 Report Share Posted December 21, 2016 The gearbox is an LM100, not a Blackstone Richard My mistake Link to comment Share on other sites More sharing options...
RLWP Posted December 21, 2016 Report Share Posted December 21, 2016 My mistake Not only yours. If I remember correctly, the engine was originally listed as an HA3 with a Blackstone box Richard Link to comment Share on other sites More sharing options...
Bee Posted December 21, 2016 Report Share Posted December 21, 2016 Coppered? Coopered? just a thought, to achieve the fore end slightly barrel shape maybe also a slightly rounded chine. Can't say I've ever seen copper plated steel of any type and I've never heard of teredo worm attacking narrow boats steel sides or wooden bottoms. Link to comment Share on other sites More sharing options...
alan_fincher Posted December 21, 2016 Author Report Share Posted December 21, 2016 I believe it means "copper bearing" rather than having a coppered layer? I can't recall the Middle Northwich boats using it, (I may be wrong though!), although some GUCCCo ones were specified to. When we had a lot of steelwork done on "Sickle". (Middle Northwich) recently Graeme Pearce at Stockton Dry Dock described the original steel as being more like wrought iron when he worked on it, and quite unlike modern steels, particularly when welded. I see the advert for Acacia no longer claims it is a "Fish" class boat (!) Link to comment Share on other sites More sharing options...
Derek R. Posted December 21, 2016 Report Share Posted December 21, 2016 Copper bearing it is. Seemingly the percentage of copper in the steel is between 1% and 2%. http://ispatguru.com/copper-in-steels/ http://www.nssmc.com/en/tech/report/nsc/pdf/6406.pdf Link to comment Share on other sites More sharing options...
MtB Posted December 21, 2016 Report Share Posted December 21, 2016 I see the advert for Acacia no longer claims it is a "Fish" class boat (!) A "wood" class boat, presumably. Link to comment Share on other sites More sharing options...
Captain Pegg Posted December 21, 2016 Report Share Posted December 21, 2016 I believe it means "copper bearing" rather than having a coppered layer? I can't recall the Middle Northwich boats using it, (I may be wrong though!), although some GUCCCo ones were specified to. When we had a lot of steelwork done on "Sickle". (Middle Northwich) recently Graeme Pearce at Stockton Dry Dock described the original steel as being more like wrought iron when he worked on it, and quite unlike modern steels, particularly when welded. That sounds consistent with an alloy steel containing a high copper percentage. Wrought iron is more malleable than mild steel at an equivalent temperature. JP Link to comment Share on other sites More sharing options...
Athy Posted December 21, 2016 Report Share Posted December 21, 2016 A "wood" class boat, presumably.Or an "Avenue" class, built for use on nice suburban routes? Link to comment Share on other sites More sharing options...
MtB Posted December 21, 2016 Report Share Posted December 21, 2016 Or an "Avenue" class, built for use on nice suburban routes? Or maybe built from acacia timbers... "Maid of Acacia" doesn't have the same ring to it though, duzzit... Link to comment Share on other sites More sharing options...
Athy Posted December 22, 2016 Report Share Posted December 22, 2016 Or maybe built from acacia timbers... "Maid of Acacia" doesn't have the same ring to it though, duzzit... Wasn't there a Springer called 'Maid Of Gasholder'? Link to comment Share on other sites More sharing options...
mykaskin Posted December 22, 2016 Report Share Posted December 22, 2016 Victoria, and presumably the other Yarwood Royalty boats were made from Coppered Steel. As people have said, it's an alloy. There is a stamp on the steel on Victoria, however I have lost the image from the last paint stripping. Mike Link to comment Share on other sites More sharing options...
Derek R. Posted December 22, 2016 Report Share Posted December 22, 2016 Wasn't there a Springer called 'Maid Of Gasholder'? I don't know about a Springer, but feel sure there is/was a cruiser made from gas holder plate. Blow'd if I can remember the name though. Link to comment Share on other sites More sharing options...
Laurence Hogg Posted December 22, 2016 Report Share Posted December 22, 2016 I don't know about a Springer, but feel sure there is/was a cruiser made from gas holder plate. Blow'd if I can remember the name though. Was built by Roger Sharpe at Shardlow and moored there for years, very likely still extant. Link to comment Share on other sites More sharing options...
MtB Posted December 24, 2016 Report Share Posted December 24, 2016 Wasn't there a Springer called 'Maid Of Gasholder'? No. Link to comment Share on other sites More sharing options...
monkeyhanger Posted December 29, 2016 Report Share Posted December 29, 2016 When I first knew Acacia she was fitted with a JP3 (2)? The then owner, Frances Beechey, put the Gardner in after a very near miss with an oncoming boat in a bridge hole....the JP was slower to pick up in an emergency! At the time, he dealt in motors in a small way. Dave I bought a load of JP spares from Francis when I was building up my engine in the late 80s/early 90s.On the last occasion I spoke to him, he was waxing lyrical about Acacia with its 4LW. It was a sad day for me when I heard he had passed away. He was a veritable mine of information,always willing to help, and a great guy. Link to comment Share on other sites More sharing options...
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