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22-02-2010, 13:01
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#1
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Senior Cruiser
Join Date: Dec 2008
Location: Between Caribbean and Canada
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 8,492
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Interesting Aluminum Construction
I ran into a fellow who is building an aluminum boat with a very different method than any I have seen. I thought some here might find it of interest.
I know almost nothing about what he is doing other than what you see here.
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22-02-2010, 13:38
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#2
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cruiser
Join Date: Mar 2004
Posts: 1,167
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Looks like he is going by the "Be reasonable and do it the hard way" philosophy. What a horrendously complex and labour intesive way to go about it! Must love extra welding and fitting. I'd rather be sailing.
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22-02-2010, 13:42
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#3
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Registered User
Join Date: Oct 2009
Location: Placida, FL
Boat: sold our IP, now motoring along on the dark side in a Heritage East Sundeck 36
Posts: 228
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To my untrained eyes, it looks like he's building a wooden boat out of aluminum...
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22-02-2010, 13:53
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#4
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Senior Cruiser
Join Date: Dec 2008
Location: Between Caribbean and Canada
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 8,492
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Brent, we just bought a 1985 44' steel Pape design boat. 4 chines. It has no stringers. The chines appear to be but welded but also have about 3/4" pipe or conduit on the inside, welded top and bottom. So the "rounds" are the stringers. It is kind of neat in that there is no place for water to accumulate.
I have seen pipes on the chines before but always on the outside where they sort of double as rub rails. So this was a new detail to me.
Being a 1985 boat she has "been around" and is showing no signs of wear and tear. It looks to me to be a plenty good construction method. But, it also looks to involve a lot of welding, though not as much as this fellow.
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22-02-2010, 15:10
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#5
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Registered User
Join Date: Sep 2008
Location: Toronto, Canada on Lake Ontario
Boat: Roberts Offshore 38
Posts: 1,287
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His name is Zeyang, and he's building an aluminum copy of an 1800s wooden lapstrake design used in the North sea and the Arctic. I've been chatting with him on and off for about 6 months. Right now he's in the process of turning the hull over. He has a build thread going on this site:
alu sailboat buliding - WeldingWeb™ - Welding forum for pros and enthusiasts
Anyway he's a nice guy to chat with, working on a boat. Have a look at the thread, it goes into more detail on the boat design n such.
Sabre
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22-02-2010, 15:12
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#6
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Registered User
Join Date: Oct 2008
Posts: 223
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22-02-2010, 15:32
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#7
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Moderator Emeritus
Join Date: Sep 2006
Location: Chesapeake Bay
Boat: Bristol 35 Bellesa
Posts: 13,564
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__________________
Sing to a sailor's courage, Sing while the elbows bend,
A ruby port your harbor, Raise three sheets to the wind.
......................-=Krynnish drinking song=-
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22-02-2010, 15:41
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#8
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CF Adviser
Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
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wow. lapstrake. welded lapstrake.
how does he plan to fair this hull? that's gonna take A LOT of grinding.
__________________
cruising is entirely about showing up--in boat shoes.
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22-02-2010, 16:26
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#9
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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Seen a couple of steel boats welded this way. Why not alloy.
b.
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22-02-2010, 18:25
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#10
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Registered User
Join Date: Oct 2008
Location: Puget Sound
Boat: Irwin 41 CC Ketch
Posts: 2,878
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This is the same boat as The Girls thread...for some reason I though this was an all Woman project...which I find very cool for some reason...I guess I get all worked up seeing chicks all dirty grinding away..
__________________
"Go simple, go large!".
Relationships are everything to me...everything else in life is just a tool to enhance them.
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28-02-2010, 01:41
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#11
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Registered User
Join Date: Nov 2009
Location: 中国
Boat: Homemade double ender
Posts: 114
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Quote:
Originally Posted by Brent Swain
Looks like he is going by the "Be reasonable and do it the hard way" philosophy. What a horrendously complex and labour intesive way to go about it! Must love extra welding and fitting. I'd rather be sailing.
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Hi Brent. Im the guy building that 100 year old lapstrake boat. Lapstrake boatbuilding has been out there last 1000 years shaped with iron-axe and some bendingforce and iron nails. (just look at some of the old viking boats) I just swapped oak and pine planks for alloy planks instead (+ added a welding machine instead of iron nails)
its not complex and probably less labour intensive if you compare to shaping plates for a cravel hull, especially if you want a real nice looking looking wineglass shaped hull. (not radius chine which is more or less a fake way of try to have a boat look like a wineglass shaped hull)
You also avoid using pyramid roller and english wheels to shape the metal. ordinary woodworking tools is enough..
For me I like nice looking traditional wooden boats, so I prefer this style of building.People who want a hull built faster should probably use another technique. (hard chine planks etc)
It would be an interesting exercise to compare how many manhours we use on different boatbuilding techniques, then people could decide for themselves how much time they are willing to spend.
I rather like sweet looking curves on a lady. :-)
zeyang
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Sailing the Farm - Come join our boatbuilding and sailing coop!
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28-02-2010, 03:43
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#12
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Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
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Interesting build How are you sealing the "lands" where the planks overlap.
Tapering the lower plank so that the upper lies flat, as in wooden boats?
Where will you run your bead. inside, on top of your lower plank?
Would solve your moisture problem.
I would think, in the final analysis, this hull will not be more labor expensive than a similar wooden lapstrake or carvel planked hull.
You will however, have to be mindful of the electrics in your marina.
__________________
so many projects--so little time !!
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28-02-2010, 08:53
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#13
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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Quote:
Originally Posted by zeyang
It would be an interesting exercise to compare how many manhours we use on different boatbuilding techniques, then people could decide for themselves how much time they are willing to spend.
zeyang
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"we use" - ???
Once you introduce the "we", you can no longer compare (the man-hour requirement of) one technique with another.
Based on the ratio at which a boatyard can spit out hulls, I would guess the building speed order (that may be related to man-hour requirement) looks more or less like this:
-roto,
-laminate,
-welded metal,
-wood.
But note that the tooling and the level of skill in just these 4 samples escape any comparisons. Apples vs. onions.
b.
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28-02-2010, 09:22
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#14
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Registered User
Join Date: Sep 2007
Location: Annapolis, Bahamas
Boat: 1983 Gulfstar 36
Posts: 1,253
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Having spile'd (fitted) many planks on wooden double enders it takes a wide board to get a long plank. as they look stright when in place but in fact are curved when laid flat. How much waste do you get wth the ALuminum? How long s your average plank? Very cool stuff! am now thinking of this for a 4 -5 meter tender project.
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Will & Muffin
Lucy the dog
"Yes, well.. perhaps some more wine" (Julia Child)
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28-02-2010, 09:40
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#15
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Registered User
Join Date: Jan 2010
Location: Wells, Vt
Boat: 42ft Colvin Gazelle - TLA HLA
Posts: 503
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Wow, to judge someone for undertaking a project that he chooses to seems a bit much. There is no question that Zeyang will have enough linear feet of weld in his boat to have built many single chine hulls. But so what? It's his project and he has his reasons. It is a beautiful boat! It'll be strong and tough and will probably be around for longer than anyone here. I don't think man hours is his primary concern. Craftsmanship is something that we seem to have lost appreceation for. Damn! Look what he's doing!
Carry on Zeeyang. Beautiful job!
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