Archive for April, 2007

Interlude: building a Sea Rider SOF

Prior to starting the stripping on the Freedom 15 canoe, I thought I’d try and rig together the frame of a skin-on-frame kayak.

I had come across Tom Yost’s website and found a ton of good information on his SOF construction method, along with several different kayak designs. It’s an unbelievably good source of information. Through a small amount of research and a few emails with Tom Yost, I decided to build his Sea Rider. As I have had this in the back of my mind for some time, I had already purchased nylon and cedar for the kayak. I did this last year while working on the Tern 14 for my wife. I figured that I would want a kayak in case we had a chance to paddle together, and a SOF would be the cheapest and fastest way to build a kayak for myself.

Earlier this year I transferred Tom’s offsets into my CAD program and printed out templates for the stations. I then cut the stations out of some extra 1/2″ plywood I had kicking around. This was a bit of a mistake because the plywood turned out to be of very low quality. The surface was so rough that it was difficult to trace the proper outline on the wood, and the wood had a tendancy to grab the saw when cutting which made it difficult to make precise cuts. As well, there ply had a lot of voids in it. I tried to fill in the voids as best as I could with thickened epoxy. So after all of the tracing, cutting and sanding I was almost ready to put the frame together. I also needed to rip the planks for the frame and scarf them together. I started with a 1x8x10′ wrc board and ripped it to make the chines and keel (1x.5×20′) and gunwales (1.5x.5×20′).
boat
My first shot at putting the kayak together went okay. The keel is curved, so I’ll have to fix that before I glue everything together. I may also try to clean up the scarf joints a bit better before continuing.
curved keel

BTW, I chose the name “Interlude” because that is exactly what this kayak is. It’s an interlude in the building process of the canoe. Pretty imaginative eh.

Ripping It Up

I spent the weekend ripping strips for the Freedom. The stock wood I used was 9 boards of 6”x3/4”x19’, from old growth tight clear western red cedar. The wood was really nice but it presented a couple of minor problems. First, the wood was already planed but it had weathered on the faces. Secondly, it was all edge grain. This meant I had two options for ripping. First, I could rip 3/16” strips from the board and the resulting strips would be face grain with weathered edges. Secondly, I could first cut planks 7/8” wide and then try and rip 3 edge grain strips per plank.
Ready to cut

I decided to cut a mix of the two methods. First I would cut a 1” plank, flip it and trim the other edge to 7/8”. If the grain had an interesting pattern I would keep ripping the board into face grain strips. On the other hand, if the grain wasn’t all that interesting, I would rip the 3 edge grain strips per plank. Read the rest of this entry »

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