Harold, yes I kept the sail angles the same and basically added to the back so the boom and yard became longer as well as the mast. My mast broke Wednesday so I am going to make a solid round wood mast but shorter this time as I do not think I had to lengthen it originally. I added strengthening patches in the corners and I added a line into the seam to prevent stretching. You should add a wide seam at the front so the yard can slide in for better aerodynamics. I tied mine on but will maybe add the wide seam later. See my doc.
Feel free to ask more questions.?
Regards
Philip Malan
On Thursday, 2 September 2021, 16:25:49 SAST, Harald Niespor via groups.io <vitamedi62@...> wrote:
Hi Philip,
did you design and build the 12 sqm sail by yourself? It will be nice, to get some advice from you:) The boom and the spar are now longer to get more sail area?