-also previously posted - <br>proposed is a combination Formula box -and developement rule , with sail area and boat weight ratio scale being allowed to develope . <br>-Proposed preliminary sail area to boat weight ratio scale for the 20 class - <br> <br>max, Weight -420 --main 220 --jib --60 --spin 330 sq ft <br> <br>-mid range -Weight 370 --main 200 --jib 55 --spin 300 <br> <br>-min Weight 320 --main 180 jib 50 --spin 270 <br> <br>-note; shown are max,-mid and min. --all would be calculated based on individual boat weight and fall within this range . <br> <br>--As you can see we are proposing an increase of sail area of the existing N-6/0 for example at max 420 lbs. from exs. 264 to 280 max , main and jib ,--including mast area . <br>-Max. spin area would be 330 sq ft . with a percentage allowance in increased spin area for alum , and heavier masts with added stays or the heavier comptip of several existing designs wishing to keep them rather than modify . <br> <br>-Stay hound tang mast locations and max height can be standardized along with max spin pole L . <br> <br>-All designs would also be allowed to shift sail area from main to jib in total equal sq ft per weight catagory,allowing some flexability in design . As another example In the mid range weight the 8.5 beam version Tornado at 370 +or - could use its existing sailplan main and 75 sq ft jib with larger allowed spin if desired. <br>--At the min weight end we are encouraging approx 100 lb lighter designs than existing F-20s with slightly smaller main and jib with equal spin area in respect to current boats. <br> <br>Here is the prop. Weight to Sail Area rule scale applied to the various designs listed .-Keep in mind that mainsail area from max may be transfered to the jib area maintaining the total equally to allow design variation, and that a spin area increase { 2 to 6 % }will be added to heavier masted existing designs. <br>-Note : max spin area may not always prove fastest , we may find a certain aspect ratio spin performs best through a range of conditions given the same hoist height on the mast and spin pole length. <br> <br>-note; varied Weight slightly for example purposes ,-as we know mfg. advertised W will vary , each will be weighed. <br> <br>--N-6/0 --W=420 - - M-Sail 220 - - Jib 60 -- - Spin max=330 + % factor of mast -applied based on mast weight,all designs <br>-note ; all existing N-6/0 s could race as they are including the East coast fleet with it,s 348 spin under the mast allowance rule .-6/0s wishing to modify to max sail area over time as listed have that option. <br> <br>-Tornado sp -8,5 Beam --W-370 -MS =200- Jib 55 - - Spin 300 <br>-note T-could race using it's existing sail plan with larger spin if desired or upgrade its sailplan configuration as listed. <br> <br>-Inter 20 -W=390 - - MS =208 - - Jib 57 - - Spin max,-312 <br>Inters could use their existing sailplan and upgrade their spin. size if desired. <br> <br>-H-Fox -W-415 + MS =218 -Jib 59.5 - Spin max -327 <br>-plus % for heavier mast if used , <br>note; Fox could sail as is or upgrade to max sail area in any combination. <br> <br>-Mystere W=400 - - MS =212 - Jib -58 - - Spin max=318 <br>may sail with exs. rig or modify to max. <br> <br>-H-20 -W=420 - - MS 220 - Jib 60 - - Spin max 330 <br>plus % for heavier mast if used. <br>; may use exs.rig or upgrade to max. <br> <br>-P-19 -W=385 - MS 206 - Jib-56.5 - - Spin max. 309 <br>would be competitive with existing rig and upgraded spin. <br> <br>-Light -W=320 -MS -180 - Jib -50 - - Spin max. 270 <br> <br>Do not believe this option is presented in the previous polling post. <br> <br>-Can some offer specifics of the negatives and positives of this proposed rule . <br>thanks - <br> <br><br><br>
