Making the Yuloh

Have formed a yuloh from Matt's plan for the Paradox yuloh. Interestingly, the plan calls for the yuloh to be curved with 30mm of camber. I laminated a couple of tight grained douglas fir boards together to form the curved blank. After trimming the laminated boards to dimension on the band saw, I took the trimmed off scraps and laminated them back onto the blank to build up sections that were a few mm under dimension. The blade area needed to be a few mm wider and the handle needed to be a few mm thicker.

Here is the squared up blank with trimmed off strips laminated on to build up the low areas.










































Yesterday I shaped the yuloh with a hand plane, a fairing board and a sander. Then filled some nicks and sanded the yuloh today. The photos don't show the ingenious shape of the plan. I put it on the deck of the boat to see how it will stow. (blade alongside the deckhouse). I fits beautifully. The curve conforms perfectly to to the curve of the deck. How did he do that?

Stability Trial

With the ~220 lbs of steel plate ballast secured to the floor, it was time for a stability trial. The video shows 2 trials with the mast below water level.

In the first trial, there are also a couple of sand bags (~ 2 x 60 lbs = 120 lbs) lashed to the floor in addition to the steel plate (6 pieces, ~ 220lbs total).

The second trial is without the sand bags, steel plate only. The difference is pretty subtle.

We also did a couple of tests with me in the boat (no video) and from my view it didn't seem like there was much difference in observed stability.

It is noteworthy that I was able to enter the boat when the top of the mast was in the water. The cabin coaming was still a few inches out of the water even with my weight on it while entering. If the boat were heavily laden, this might not be the case, but the hull would likely be even stiffer in that condition.

The boat is pretty tender when upright but stiffens up remarkably when heeled. The second trial was in deeper water. The boat stiffens up even more as soon as the deckhouse is in the water. It is a very noticeable increase. You can see in the video that I was trying to push the mast to the bottom but was not able to do so. All very encouraging.

Note also that in these first trials, the sail is down. In a real knockdown, the sail would be up, there would be more weight aloft and the rig might catch water and dig in as the hull is pushed toward it by wind and waves.

Back in the Water

Fantasma is finally back in the water after a long winter! We had her out on Chilkat Inlet near Haines, Alaska for some light wind sailing over the weekend. I am still refining some of her features and capabilities.

I have been having an issue with the boat developing the light weather helm it should have when on the wind. At Matt's suggestion, I trimmed 75mm off the rudder (oh, I hated doing that!). That did seem to help just a little bit but hasn't solved the problem. Next step is to fit a gripe (wood strip) on the forefoot. I will post on this and the results.

The other development is that I have secured the steel plank ballast to the floor with a couple of 1x2 hardwood strips along the interior of the chine in the cabin. (I get some pictures up of this too).
This allowed some basic stability tests to be done this weekend.

Happy Holidays!

Fantasma is snowed in!

Pine Lake Video

Here is some wacky video from the recent sailing session.

Trials with More Ballast

I finally have arranged for more a trial with more ballast. Fantasma now sports about 220 lbs. of steel plate as ballast. The plate are fashioned into 6 removable planks held in by hardwood strips.

For this daysail in light to moderate winds, I also added 2 x ~ 80 lb sandbags at the mast. That brings gross up to the 800 - 900 lb range, which is in the ball park for what Matt recommends.

Also on board for part of the session were 2 passengers (plenty of room for 3) and this brought total weight up over 1000 lbs. She handled that fine, more than fine, as I think she liked it even better.

All-in-all she was well behaved and fairly stiff with this amount of ballast.

This jibing photo is singlehanded (8-900 lbs) and shows her level and getting down to DWL.







These close reach and close hauled photos show her slightly heeled and the chine digging in.



























There is still a bit of lee helm upwind in lighter breezes, but the additional ballast has helped.

Paint and Windows

Fantasma is sporting more paint these days. It has the waterline on it now. In addition, the lexan windows are in.
Next comes the internal ballast and back to the water for more testing.