Behold the Fold

This weekend was the first time I've been able to assemble Shan Skailyn since I installed its hefty iako hinges some time ago. Works like a charm! That'll come in super handy.

Thought I'd throw in a picture of my 'land crew'; youngsters from the area who were all too pleased to help with the assembly process. Note the reefed sail. I've got the sail and rigging completely done now. The whole thing can be reefed in just a few minutes with relative ease. Same for the reverse.

This composite photo is my attempt to overcome the difficulties of sending pictures over email. Our HF radio system doesn't handle multiple pictures well. So maybe it'll handle this better.

Hinged Crossbeam

Today was one of those moments in Shan Skailyn's construction that I've been waiting for a long time! I got the crossbeam hinges mounted!

It was a scary thing to cut into the crossbeams knowing there was no turning back after starting with that. Since I originally had not planned on these hinges, the crossbeam section needed some modification to make it work. I had to chisel out the old spacer block after cutting the crossbeam. Where the hinges had to go just happened to be right where one of spacer blocks was put for spacing between the two stringers. That block, had it been big enough to take the hinge bolts would have been perfect. But alas it wasn't to be. So I had to carefully chisel that out, then dress up a new block that had the length that would be needed to properly secure the hinge. All that went surprisingly well. When installing the hinges the fit was just tight enough that I had to lube up the crossbeam to be able to get the hinge on. I chose to do that with epoxy so as to seal it all up and keep moisture from doing damage to the wood underneath the stainless steel. The fit was still tight enough that I still had to pound the things into place. But it wasn't so tight that it shaved any wood off or otherwise destroyed anything. In other words... perfect! Each hinge side has 4 flush mount machine screws that are epoxy bonded into the now solid wood core of the beam. Sometime after the epoxy completely hardens I'll clean up around the edges and touch up with some paint. What started out as kind of a scary project has turned out to be well worth it. These hinges are very stout... probably quite a bit stronger than they need to be. But better safe than sorry! One more good thing I noticed is that there is no room for any rattling in the hinges. Everything is tight fitting which should minimize annoying sounds while sailing.

All assembled... again

I've had Shan Skailyn set up out on our little helicopter pad for the last couple weeks. I just needed to have it assembled for a while so I could check some details that I otherwise would have a hard time checking. With the heavy rain we get I just kept it under a tarp until I would work on it on the weekend. I also made the discovery that both my ama sections are leaking somewhere! Ughhhh! I've checked them over for any bad joints... nothing. I'm pretty sure it's just the inspection ports. Gary recommended I grease around the o-ring seal. Will have to do that and set back out in the rain to see what happens.

Saturday morning I disassembled the whole thing again and moved all the parts into our little office building where I store it here in Mibu. Now that I have everything built, I'd really like to weigh everything and get a total rigged weight. Really curious what that is. Will post when I do end up doing that.

Really the only difference in these pictures is that I have Shan Skailyn's hiking seats installed. I took a number of other photos of details that I'll post throughout the week. So stay tuned.

Raise the Sail

Ugghhh, our email system keeps butching my emails... Trying again

Today was an exciting day! For the first time ever I got to see how Shan Skailyn's rigging is all going to work out. Raise that sail!

Seeing it all come together

We have the pleasure of a visit from our helicopter pilot, Mike, and his family this weekend. Coming in with them and with the helicopter today we got our supplies in... including our mail... which also includes the hex nuts that I've been anxiously awaiting for the bolts to connect the hull pieces together. I can finally assemble the hull!
Mike and I spent the afternoon putting all of Shan Skailyn's pieces together to see just how everything is looking so far. Such an awesome feeling to see all that come together!
Everything fit the way it was supposed to. That's a good sign! I was surprised at how strong those lashings actually are, joining the iakos (cross beams) to the hull. One helpful piece of information for anyone ordering parts for a similar project is that each lashing point on the iako to hull connection takes about 9 feet of small diameter rope. In my ignorance, I had only planned and purchased enough for one meter on each lashing point. By the time we had joined everything together, including the ama to iako connections, I had very little left of the mere 65 feet of rope I had purchased. Gonna have to buy more.
There was a lot of interest generated among our kids and the many Mibu kids that were up playing in the area as they saw this oddball project come together in this place with nowhere to sail!
Mike and I also took this chance to talk about how things will have to work out when the helicopter that you see in the background carries all this 12 miles out to the coast sometime next year for its maiden voyage.

Iakos (crossbeams)

Here are the finished iakos. My apologies for not getting pix of the process of making them. I went with the hollow box beam design. I'm really glad I did. They seem really lightweight. I increased the overall width and height dimensions by 10% from the solid wood version per Gary's advice and that of others as well. Oh yeah, still have to put a fiberglass wrap around the end where the ama attaches to keep from splitting.
A word of advice... if you're limited to buying JUST the 6 sheets of plywood recommended in Gary's book, make sure you maintain as much of the waste as possible! Don't be liberal if you rough cut things first. I just BARELY had enough plywood to build these iakos. I had to piece things together a little bit on the second one. Other than some small pieces of plywood it is ALL GONE now. Kudos to Gary for laying things out so efficiently in the plans in his book.

Beginnings of iakos and ama

Lots of little details that need working on lately. Most of my efforts last weekend went into the ama and the iakos. Along with those, I've also been working on the solid wood stub mast as well as it's mast step (the step with the square hole). Next to that you'll see the mast step for the luff spar (the step with the round dish carved into it. Saw the idea for that one mentioned somewhere by Gary on his website. This seems like a reasonably simple way to make a universal joint for the luff spar when you don't have access to windsurfing supplies. The base of the spar, which will have a rope passing through it, will sit in the cup, with the rope passing through that. With the rope pulled and fastened tightly on the other end, it will provide a great universal joint. And it should be easy and quick to drop the sail if needed. Just loosen the halyard and the rope passing through this mast step and the whole thing comes down.
Should be ready to finish gluing up the ama and the second iako this weekend sometime.

Response to comment

DaveP, thanks a TON for your comments regarding bamboo and the construction method of your iakos. Extremely helpful. Since I've got plenty of time to wait, I'm planning on doing some tests on the particular type of bamboo that I'm planning on using here. I'll do one piece with fire, I'll leave one bare, I'll clean one with acetone before varnishing, and I'll sand and varnish another piece. I'll try to do that soon. When they're done, I'll leave them out in the rain and sun to see what happens to them over the next half year or so.

I'm planning on having my stub mast made out of wood and my luff spar and boom out of bamboo. I do have the option to use solid wood spars all around. There are tons of spindly, strong, lightweight woods around here that are straight as an arrow. The Mibu people harvest them all the time to make their ridge poles in their huts. However, I think the type of bamboo I'm looking at surpasses in both strength and lightness of weight. I also like the look. I just don't want to mess with having to custom make the step for the fixed mast should the bamboo ever have to be replaced. I'm thinking I want to make sure the mast only ever has to be done once.

The more I go along, the more I'm thinking how much I like the idea of making the hollow box frame iakos. I'd love to see a picture of what you've done. If you can manage to get a pic and message under 80kb email me a pic sometime. geoff_husa(at)ntmdotorg. The size restriction is because I  pull all my emails over HF radio. It's SLOW and quite limited.

(You'll have to pardon my method of responding here. No internet from out here in the bush. But I can generate new posts via email. So welcome to my way of responding to comments!)

Sawdust-n-Sails

Yesterday, I was able to spend nearly the full day working on Shan Skailyn. Shannon (my wife) and the kids were all busy with other stuff and gone much of the day. Only restrictions had to do with baby Abigail and her naps. No tools during naps!
So I finished cutting and planing the chines and the last little bit on the gunwales. I sorted through a bunch of other lumber and pulled out what I'll be using for the bulkhead perimeters, stems, seat supports and the like. Will be using a bunch of cutoff pieces from when we installed our floor. It's all 3/4" x 4" mixed hardwood tongue and groove flooring cutoffs, including stuff like kwila (ironwood), mahogany, and other standard hardwoods found here in Papua New Guinea. I tried to divvy them up so that the hardest stuff (ie. kwila) is to be used for the ama struts and the sides of the bulkhead perimeters where the bolts will be passing through. Then I'll want the lighter weight stuff to be used in all the other places.
Still haven't determined what I'll use for the iakos. Actually contemplating using bamboo, but I remember reading that Gary Dierking's concern with using those is that unless a way is found to provide structural support at the lashing points, that may be a major weakness. The walls of bamboo can be prone to crushing under such strain as the iakos experience. Will have to think about that and also experiment with bending the bamboo. I'm perfectly happy to do the either the laminated solid iakos or the hollow box frame construction like in Gary's book, but it seems that bamboo would be the lightest option if it would be strong enough at the lashing points and formable enough to get the downward curve at the ends.
I also managed yesterday afternoon to cut the sail out of my tarp material. Moved all the furniture out of the living area in our house. The kids were around then and thought it was a blast! So we laid out the sail, cut it, and even sewed the leech seam as well as a single dart in the foot and one in the tack (for the equivalent of the broad seam).
One thing I'm very concerned about at this point, and would LOVE to get some feedback on before proceeding any further) is whether or not sewing is the best option on this tarp. This polytarp is not of the woven variety. It's a solid piece of plastic. Same material, just not woven. Well my fear has been that sewing the unwoven stuff would actually serve only to act as a perforation line, making for a weak spot in the sail where it will be likely to tear. Well on my test pieces, I'm finding that to be true. It takes quite a bit of pulling to make it happen, but it does tear right along the stitches. It does require strong pulling for it to tear, but it always tears along the stitch. One thing I'm thinking about (assuming I decide to keep this material for the sail) is taping over all the seams as a backup, using either duct tape or packing tape. But I really would like for this sail to look nice if possible. Any ideas or thoughts out there? I need some help figuring out what the best long term solution will be here! If you have thoughts, post your comments!