On this topic,   The mast which I want to build and is being built for/by Rob has the core/carbon section running full length and is a single piece without needing to lap over or use redundant extra material as is the case in the stub mast. You have the stub going up the inside and need the overlap sdiastance where the loads transfer from the mast to the stub. The mast I have (from harrigami) is basically the one pice mast which simply gets the nose and tail fairings added on as shaping. This is coming along and I have cut the slot and started Q cell fairing,.   I haven't followed the topic, but was recently cutting up and throwing out the old two schooner jobs that were real heavy and also I think this other way should be quicker /cheaper/lighter to build than a stub. I am assuming this is what the topic is about, as the mast still has a stub section which is round to fit the hull tube. Harrigami's has polystyrene nose and I have added the 6mm foam and glass tails. It is a trick to keep it all straight and even, but a good workshop layout and flat tables should make it easily done.   Another hot day and swim at Maylands. The boat is anchored and shows no roof which was blown off it's hinges recently - so I will fix it back on as it didn't float very far away but was lying up at the side on the bank.   Doug   Is there a concensus among builders that you use special fairing filler (the dark brown fgi or fti or whatever company it is) eg to do a blade?     --- On Mon, 23/11/09, Gardner Pomper <gardner@networknow.org> wrote: From: Gardner Pomper <gardner@networknow.org> Subject: Re: [harryproa] Wing mast on stub? To: harryproa@yahoogroups.com.au Date: Monday, 23 November, 2009, 13:44   It would seem that you would have a hard time getting to the bottom bearing, when it is down in the lw hull if you don't have a stub mast. Do you make removable bearings there too? I also wonder if I am being too concerned with fitting the mast in a container. Would it be reasonable to just chop off the top 8' (or so) of the mast when shipping, and then just epoxy it back together at the destination? The very top portion of the mast should not have all that much stress on it (other than the halyard tension). Another idea is to build the boat with taller masts, and if I ever decide to ship it, just have shorter ones made. I imagine that pretty much anywhere I go will have more wind than the Chesapeake Bay. I might even be able to use the same sails, just always reered down one reef. I assume this is a pretty expensive solution, especially if I am looking at a schooner rig. I guess all of this could be solved by a 2 part mast. I figure I can get the same sail area from a ballestrom rig with a 55' luff than I can from a schooner rig, with 2  33' luffs. - Gardner On Sat, Nov 21, 2009 at 9:53 PM, Rob Denney <harryproa@gmail. com> wrote:   I don't like stub masts (heavy, can't get to the top bearing), but where height is limited, they may be worth the effort.   Easy enough to make, as long as the bearing assembly for both bearings is installed in the mast prior to joining it together.  Not a big deal.  Could make the assembly removable pretty easily too, which solves some of  the maintenance issue. His bearings are spherical, mine are plain. We have had no trouble with these so far.  Suspect you could get a spherical one made for a lot less than 5 grand.  Half a wishbone is ok if you can stop it twisting, or live with it interfering with the lee side of the sail on one tack.  Not a big deal.  rob On Sun, Nov 22, 2009 at 7:32 AM, Gardner Pomper <gardner@networknow. org> wrote:   Hi, I was just http://www.sponberg yachtdesign. com/ looking at his wing masts. The idea of a stub mast with the wing mast rotating on it appeals to me for my containerizable boat, so that I can get more sail area. Will this work with your mast build methods and bearings? I like the sound of your $350 bearings alot more than his $5000 bearings. Also, what about his idea of a half-wishboom boom? If I angle the boom up like that, I could have the clew above the hardtop over the ww hull, and still have the sail low enough to work on at the lw hull. Still thinking... - Gardner York, PA