DN sailing at Lapinjärvi

February 2nd, 2008

Last Sunday was my second time at Lapinjärvi. We were supposed to go to Pyhäjärvi but couple other DN’s went through ice on Saturday and we turned our wheels to Lapinjärvi. Conditions were near perfect: 1 to 3 cm’s of powder snow and enough wind to get past 25 knots. Rigging took about 30 minutes and then we sailed few hours.


Anssi and DN trying to hit me ;).

Anssi sailing

Anssi took few photos and even some moving pictures with my crappy digital camera. First one is me sailing upwind and second one is taken when I’m trying to stop.

Some sailing

January 11th, 2008

Late post as usual but this post is about last September and first test sailing with the Blade. It took quite amount of time to finish her to be ready for getting wet and after cutting some corners (i.e. temporary adjustments) everything was ready for some sailing.

Ready to be rigged
Setting up last bits of rigging on Saturday 15th of September she was ready to be launched on 16th with only main sail. Even with only one sail I was pretty happy with myself as the picture below shows ;).

First time on water

We sailed few hours, just trying to get some feel about new boat. Because the wind was pretty light we didn’t get to fly the hull just yet.

Some sailing Some sailing 2

Next weekend I got also the spi rigged. The jib was left for next spring because I didn’t have enough time to work with boat, I promised to my wife that sailing season ends at the end of September (our first child was born in early October). The spi snuffer was too tight and thus snuffing the spi wasn’t fast enough, so it needs to be replaced during winter.

Rigging spi

I didn’t have a camera with me when we tested the spi on water, but again on Sunday 23rd of September the wind was pretty light, maybe around 6 knots on gusts. We measured 12.3 knots on the GPS and flew some hull with the crew on leeward hull :). So the sailing tests were successful but there is still rigging stuff to do during the winter. I’m also committed to do some repainting so that the finishing will look better. On top of this I need to redo my bottom/rudder of my keel boat and do some DN sailing… Boy my winter seems to be busy ;).

Finishing up the hulls

October 10th, 2007

The update has been lagging for long time and the Blade has seen some water already. Maybe most biggest reason why it took so long time to write this post was the disappointment of my spray paint skills, I just couldn’t go through the paint pictures without getting upset.

After the fairing it was time to open the center cases and trampoline tube. The center case needed to be filled with some foam (light weight) and epoxy (needed support for dagger board). The glass tape covering the trampoline tube was also cut open and trampoline tested on them.
Making daggerboard cases Finishing trampoline tube
After finishing up it was time to paint the hulls. The painting was done in my parents car shed. I needed to cover the shed with some plastic because my dad had just painted the shed a week before I started to paint the hulls ;). The hulls was first painted with few layers of epoxy primer and then two layers of polyurethane top coat.
Preparing for painting Painting primer Painting polyurethane topcoat Topcoat part two
The painted surface was not that good and the hulls look spotty. This was my first spray paint job, so the last paint layer was first that I managed to do somewhat properly. I decided that I would repaint her during winter so that I can sail few times before it’s too cold to sail.


July 31st, 2007

After the last post I decided to move the hulls to our summer place and continue working there. First layer of epoxy filler was applied at the terrace where everything started year ago. After first layer there was still some high and low spots but after sanding and adding one layer the hull shaped started to look pretty decent.
First layer of filler Second layer sanded

The fairing however took so much time that my holidays started to be over. I decided to make beam landings before I had to go back to home so that it would be easier to transport the hulls. It took me one day to get everything aligned with spirit level but with help of an old pier I got everything sorted out.
Making beams

After the beam landings were done she started to look like a real cat ;).The front beam landings were done without the dolphin striker strap (I didn’t take it with me to our summer house) so I need to sand some epoxy to make room for it.
Side profile Bow Side profile 2

Originally I hoped that I would have finished fairing already but fairing the hulls took few extra applications (i.e. days) to get it right. Currently I still have to sand last epoxy layer on the hulls, fair the decks, mould the dagger board case and paint the hulls.

Shaping the hulls and some glassing

July 12th, 2007

Since last post I glued the main decks and after decking it was time for some trimming. I decided to start from the bows. The electric plane was again very useful :). The Blade has reverse rake in the bow so in the first picture the hulls have turtled.
Trimming bows Bow shaped

After the bows was trimmed, it was time to cut the decks and round the gunwales. Also fore deck was shaped from foam at the same time. At this point the hulls started to look like catamaran hulls, so maybe it will float after all.

Trimming decks

Yesterday and today I glassed decks and epoxied rest of the hulls. At this point only “some” fairing needs to be done before painting ;).
Glassing decks Epoxying hulls

Last interior work and decking

June 13th, 2007

I had too many pictures to sort out and so I didn’t write a post a week ago even though I promised to do so in my last post ;).

Last of the foam bulkheads were glued in May. At this point the plywood bridges were not trimmed so it looks like my foam bulkheads should have more height.
Foam bulkheads Foam bulkheads2

Before the decking I also had some repairing to do. I had a nasty crack on one hull just behind bulkhead five. The plywood had a hollow spot and also I might have been too hasty when inserting the bulkhead. I applied expoxy filler to the inside and layed glass on top of it. After it had cured I planed and sanded the crack from outside. I plan to put some glass on top of it after the hull is glued.

The main decks were cut out and the carbon tubes for trampoline were clued to them. I used some bricks to get the tubes tightly pressed to the main decks.
Tubes for tramp Tubes for tramp glued
Also the fore and rear decks were cut out. At first I measured the fore decks to be slightly shorter, but when fitting out they were luckily right size ;). I also decided to fill some screw holes while fixing the crack, so my hulls look little bit spotted.
Fore and rear decks Decks cut out

The fore decks have a lot of bend, so it was time to do some steaming again. The rear (and main) decks do not have the same amount so they can be glued directly without steaming.
Fore decks steamed Fore decks steamed 2 Rear decks glued

All in all, I’m slowly moving from interior work to outside work. I still have the target to sail in July, so let’s see what happens. Something that I have learned at this point is that even though I have good estimates about how long some task takes I tend to over estimate the time that I’m spending on working. I should have more time to work with the project in next few weeks, so I hope that my progress will be better.

Masts and stuff

June 5th, 2007

Yesterday I received a delivery from Holland, it contained two wing masts, rigging, one set of dagger boards and two sets of rudders. In the picture below the masts lying happily beside our house, looks good eh?
However there was a dent in one mast between the stay and diamond wire attachment. The transportation was insured and Hans from Catamaranparts is providing really good service to resolve this issue, so only thing lost was some time.

I’ll try to post tomorrow again with some building images, I have quite few of them lying around.

Deck support, glueing inside of the hulls and the foam bulkheads

April 9th, 2007

This post contains work from longer period of the time, it seems that my update schedule is once in a month. I decided to make the plywood bridges supporting the deck before coating the interior with epoxy (bad decision because they were on the way when sanding and coating). The gunwales were first notched and then the bridges fitted to these notches. First rough trimming was made based on deck curve template.
Plywood bridges Trimmed plywood bridges

After trimming the bridges they were ready to be glued. At the same time some western red cedar was glued around the beam landings and the center case to provide better support for decks.

Deck support Bridges glued

After sanding (yes I know, I should have removed the extra drops of epoxy when it was still wet) the interior was coated with two layers of epoxy, in the picture below the first layer is applied almost everywhere. I decided not to coat gunwales and plywood bridges yet because I was too lazy to sand the glue mix off them.
Almost water proofed

In the Blade plans there is a tube going through the hull for the trapeze wire (well, rubber band). I decided to use carbon tube (from Kevra) and put some kevlar on the hull attachment. If the carbon tube will be worn out then the kevlar will hopefully hold.
Carbon tubing Carbon tubing part 2

In the last picture the foam bulkheads are inserted to hulls. There is still some trimming to be done before applying the glue.
Foam bulkheads

Next I’m going to take short brake to get my keel boat on the water. After she’s ready to sail I’ll get back to building the Blade, the estimate is first weekend of May. My goal was to have the foam bulkheads glued after eastern, so I’m one work day behind of the schedule.

Glueing last plywood bulkheads, reinforcing the transom and chainplate

February 20th, 2007

The center case is located between bulkheads 11 and 12 which are the last plywood bulkheads to be assembled, rest of the bulkheads are made from foam. After the center case is cured the last plywood bulkheads can be glued to their position.
Glueing bulkheads 11 & 12
Until now the transom was glued only from outside and next step is to reinforce the transom from inside. The transom reinforcement  is made of few layers of glass, western red cedar and plywood that are glued together. Purpose for this is that the glass along the keel line should take most of the possible forces that are directed to the bottom of the transom. The next picture shows the transom reinforcement.
Reinforcing the transom

Last step before glueing the foam bulkheads is making the chainplate for side stays and for spi chute. Obviously there will be lots of pressure directed to this plate so I decided to use few layers of kevlar instead of planned glass cloth around it.

Glueing chainplate

Next step is to trim and glue in the foam bulkheads, those were the first thing that I made around last July ;).

Making the center cases

February 7th, 2007

The cases for daggerboards are made of Okume with cedar spacers. I had to be little bit creative this time because the plans are made for low aspect ratio boards and I ordered high aspect ratio boards. Because of this I moved the back wall of the case few centimeters forward and made it little bit shorter so that center of daggerboards would be at the same spot than in the plans. In the picture below you can see the back side of the case.
Center cases

After the cases are cured it is time to do some dry fitting.

Daggers in center cases Dry fitted

Because I moved the back wall of the case I  decided to put additional cedar block behind the wall so that it will completely solid.

Dry fitted 2

The case is put to correct position wit spacer and then it’s straightened with support screwed to gunwales.
Center cases ready to be glassed

Last step is to fillet and glass the case to hull.

Filleted and glassed

When case glassing is cured the last two plywood bulkheads can be glued around it. So interior of my Blade is getting along pretty well :).