-Hopefully now most comprehend the fact that all FORMULA CLASSES are developemental to some degree, and the need for sail area to weight applied . To what extent and how this weight and sail area rule should be constructed is now hopefully the discussion .
<br> A claim may be made that a Formula Class with a total boat and crew weight rule is in effect more fair in that regard as it includes equal total weight -which even one design does not address other than a min. The downside is it requires a list of weights and sail areas just as the other Formula Classes .
<br> This list for the 20 class is broader and cleans up the remedy for crew weight by combining and addressing it in the basic FORMULA, -while also including the wide array of existing active racing 20s , existing iF -20S like the Fox, and new HP 20s , lighterweight in design in its scope.
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<br>-Base specifications for the class are Inter 20 rounded down in weight -to 380 min boat weight with av 330 crew to a total of 710 LBs.-Again crew weight becomes less revevant as total weight is adjusted by total sail area in main jib and spin respectively per ISAF and Texel ratings in each catagory ,-with added class definition as to rated applied sail area limitations of configuration .
<br> Inter 20 =-Sails-- mainsail 208 -Sail jib 53 -sail ar spin =270
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<br>-In example as we progressed up the scale in a total boat and crew weight to sail area rule to include iF Cat designs like the Fox and most existing active racing 20s in the U S like the H-20 and N-6/0 at a min 410 boat weight with av 330 crew to a total 740 LBs would be allowed =
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<br>-have not run these yet in ISAF or TEXEL and will adjust , but for example purposes , -an increase of 1 jib 3 main and 10 sq ft of sail areas in jib main and spin for each 10 Lbs would allow all cats in this 740 catagory a 56 jib ,217 main inc mast -and 300 spin .
<br> Trade offs from main to jib area to be allowed for design variation and modification . -Note ,-larger jibs are especially effective in combination with spin poles set lower , effective area can be added lower to the pole with a low C E or as the existing N A Nacra 6/0 already has though using a foil.
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<br>-Example applied to the nacra .
<br> Esisting main -197 jib -67 spin=300+
<br> allowed main 217 -jib 56 -spin 300-
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<br>note trading off the existing jib of 67 =11 from main = 206 max. and is 197 now or just 9 sq ft difference. .
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<br>-The process now is to verify an exact scale coresponding to ISAF and TEXEL rating , then applying this formula to each existing design with potential modification to each , {as per example }and as applied to existing iF 20 designs like the fox , though rumor is it may lighten its boat weight . Then apply this rule to potential new HP designs and study the effects and feasability .
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<br> working on it -help
<br> Carl<br><br>