Sunday, September 28, 2014

Building the BW Scale Model

Directly on top of the modified V bottom will be the deck, which will extend beyond the bottom to provide chine flats. I referred to this previously as a "continuous deck." There will be a support structure between the bottom and the deck. The support structure will be created during construction of the actual boat.

Continuous deck with integral chine flats
I would like a steep stem (bow), for more of a Nova Scotia look.

Bateau Novi 23

The side panel's shear line (top line) will be straight to accommodate an inwhale and a rubrail with a 7-inch wide shear deck between them. The inwhale and rubrail with a shear deck between them will be like an inverted C-channel beam along the top of the side panel. However, unlike a steel C-channel beam, the shear deck will curve from midship to bow, matching the side panel's curve. The shear deck provides structural strength to the top of the side panel. This is how I constructed the V-20 shear over twenty years ago and that boat is still doing fine.


BW side panel dimensions
I decided to construct a quarter-scale model of the BW to check the dimensions before cutting expensive BS1088 meranti plywood. I laid out the new side panel dimensions in quarter-scale on a scrap of RevolutionPly and mounted them on the continuous deck model that I built previously.












From the side panel dimensions on paper, I could not tell what the final 3D stem would look like. The model shows that the new side panel dimensions will not provide a stem as steep as a Nova Scotia stem. But, I like this stem and will continue with the stem as designed. The model also showed me where I should modify the chine line dimensions (bottom of side panel) to reduce bending stresses in the plywood.

Many moons ago, my brother and I were about to build a tool shed. I was over thinking it and my brother walked out of the house saying "It's time to stop planning and time to start pounding nails."

Well, it is time to stop planning and time to start building a boat.





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