I have been running some numbers, I quickly calculated the weight transfer to lw due to heeling moment, unless the heel force I got are wrong, it seem I either could benefit from have higher aspec ratio sails, more sail area or move weight to the lw hull ... since even at higher windspeed, there is a big part of the weight on the ww hull.
Increasing AR or sail area would surely mean a taller mast, I liked having 1 piece 40' masts for trailering, not sure how complicated longer 2 pieces carbon masts would be to homebuild ...
Any comment on those would be much appreciated ...
Sail area (m2) 50
Wind speed (knots) 2 4 6 8 10 12 14 16 18 20
Heel force (kgf) 2 10 23 41 63 94 126 164 211 258
Heel moment (kg*m) 13 65 150 267 410 611 819 1066 1372 1677
Sail Drive (kgf) 1 4 10 18 27 40 54 70 90 111
AT Full disp (kg) 2000
LW hull disp (kg) 767 727 746 771 802 846 891 945 1011 1078
WW hull disp (kg) 1233 1273 1254 1229 1198 1154 1109 1055 989 922
LW hull D/L 6 6 6 6 7 7 7 8 8 9
WW hull D/L 26 27 27 26 26 25 24 22 21 20
SA/D 32
Bruce number 1.42
At 1/2 payload (kg) 1400
LW hull disp (kg) 617 629 647 672 704 747 793 846 913 979
WW hull disp (kg) 783 771 753 728 696 653 607 554 487 421
LW hull D/L 5 5 5 6 6 6 7 7 8 8
WW hull D/L 17 16 16 15 15 14 13 12 10 9
SA/D 40
Bruce number 1.60
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Posted by: lucsimard@ymail.com
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