Hi Rolf,
I think my mainsail was a special order from the local agent to E/P, although I was never asked my weight, wind condition,etc. I have readed on another thread, you mention 10-12% for chord to depth ratio. Is 10= flat, 12=full? What about the location of that maximum draft, 35%? Same location troughout the sail?
After the sailing season, once I bring the boat home, I would like to play with the spreaders and diamonds adjustments trying to match the sail-mast and I start to believe that chord to depth ratio is probably the ultimate result I should look for. Am I wrong?
10-12 percent draft including mast is just a ballpark figure and not the answer to all your performance questions. There are too many variables like boat weight, crew weight, conditions, helming skill, trimming skill etc etc.
Max draft placement is much the same, dependent on skill and conditions. With max draft further aft you get better top end speed and pointing, but it takes more skill and less waves/chop to make it efficient.
Max draft should by my book be in the same position all the way up to the top on a uni-rig unless you have some unusual sailing conditions. Not so on a sloop rig.
Chord to depth ratio is a key for proper setup, but what you do on the water is far more important. I think you are more than ready to play with the settings and find what suits you best on the racecourse.
The above is of course just my unqualified opinions, I am neither a sailmaker or professional sailor, just an opinionated sailor
I would definately try to get my mast dialed in as soon as possible. What can be better than getting a good improvement in windward VMG just before the season ends, knowing that you have even more to improve the coming season? I would follow the advice of the good chesirecat
