Alaskamike Posted July 22, 2016 Report Share Posted July 22, 2016 I'm planning to buld a Greenland-style kayak using the fuselage technique. To try and determine the offsets, I measured a diagram of the boat that had "slices" roughly every foot and entered the heights and widths into Excel (one sheet of X-Y and one sheet of X-Z data). I then plotted them in an XY plot and added a curved trendline. The resulting curves look pretty accurate an I think I can extrapolate offsets from them. So, my questions are: 1: Has anyone else tried this? 2: Does it sound like a valid technique?Thanks. Mike Quote Link to comment Share on other sites More sharing options...
Action Tiger Posted July 22, 2016 Report Share Posted July 22, 2016 If you have a model to work from, and dimensions for the "slices" you mention, those ARE offsets. I don't use computers (this is a smartphone thing) for anything, though, so I'm not sure if what you're doing will work. I just think it is an unnecessary step if you already have a model or diagram to work from. Good luck. Robert P.S. I really hope your are not borrowing lines from a living, working designer, but maybe rather recreating a historic model. Quote Link to comment Share on other sites More sharing options...
DURRETTD Posted July 22, 2016 Report Share Posted July 22, 2016 I've used Excel to visualize the lines and dimensions of one of Jeff's boats (a Curlew published in his first book) and for an Iggy. I haven't actually lofted or built either boat. I think it gives a good idea of how the lines flow and can be used to extrapolate some measurements, such as waterline length and beam, deadrise, etc. I would not consider it lofting and would be prepared for surprises while building. I'll also second Robert's hope that you're not borrowing lines from a living, working designer, but maybe rather recreating a historic model. Quote Link to comment Share on other sites More sharing options...
Alaskamike Posted July 22, 2016 Author Report Share Posted July 22, 2016 Right now I'm looking at the Cape Falcon F1, or something similar (12 - 15 feet, general purpose boat). The survey has data at specific intervals, but I'm looking to use 6 frames, most of which aren't on those intervals. I also input the offsets from the Curlew to see how the curve fitting looked, and it was pretty close. Mike Quote Link to comment Share on other sites More sharing options...
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