The Sail shapes and proportions between two F18 measured sails could be quite different. (Concur)
I owe Senor CatandaHalf numbers on mainsails for larger multihulls using the Texel.AUS aspect ratio changes.
The head and leech profile on a couple of new mainsails for the Corsairs (Dash750, C-24 MkII, C-24 MkI, F-27 Formula) has changed for boats already sailing or sails in queue for delivery. The head is wider. Some sails keep the same measured sail area.
One new mainsail had Area equal to 0.01 meters of the class rule. Another mainsail was 0.03 meters of the class rule and MGT is not on the leech.
Mainsails under SCHRS the rating remains constant with isaf Measured Sail Area (CM) and constant luff length, I think from reading again last night.
Mainsails under Texel.NDL the rating changes on E, fair enough.
Fuzzy statement: it looks like area up high under Texel.AUS will get a faster tcf, ~similar to Texel.NDL with a shorter mainsail foot (E). The direction of TCF change is known, the magnitude of change is unknown until numbers are pushed thru Excel.
The prelim Texel.AUS results look like a T.Speer diagram on lift and minimizing induced drag. Net, a couple of the new sails need to send in their numbers, get measured or declared mainsail specs before their PHRF numbers are set.
