Formula 16 and the Texel & ISAF class ratings | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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By : F16 class chairman Created : 1 november 2001 Last updated : 24 Februari 2003 Classification : general publication Copyright : restricted freeware Status : Finished although rating system are continiously changing. Comments : no comment |
Formula 16 class Home | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Official Texel handicap webpage | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Official ISAF small cat handicap page | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Web page | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Texel handicap calculator | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Online Excel | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Texel handicap calculator 2002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Online Excel | |||||||||||||||||||||||||||||||||||||||||||||||||||||
ISAF small cat handicap calculator, | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Online Excel | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Texel 2002 handicap ratings sheet, | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Online Excel | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Explanation of classification and copyright | |||||||||||||||||||||||||||||||||||||||||||||||||||||
ISAF small cat handicap ratings sheet, | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Web page | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Introduction | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Just recently the Texel handicap system committee has announced that they would alter the handicap calculation formula a bit. This new Texel system has come into effect on 1 march 2002. The ISAF system will continue as we know it. In this page we will compare the Texel and ISAF rating numbers of the Formula 16 to other cat designs and A-cat class and F18 class in particular |
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The Formula 16 Cat rigged (1-up) | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Input data Texel : Weight Length Mainsail area lufflength main Rated mainsail Gennaker Crewweight |
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Values 97 kg (+7 kg gennaker = 104 kg) 5.00 mtr. variable (example : 14,85 sq.mtr) variable (example : 8,0 mtr.) 13 sq.mtr. Yes 75 kg (by Texel definition) |
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Texel 2002 handicap system Rating Formula 16 = 100,65 = 101 Other Texel 2002 solo ratings A-cat class = 100 (fastest in list) Inter 17 R spi (USA) = 103 Inter 17 spi (non USA) = 111 Hobie FX-one spi = 107 Hobie 17 = 112 |
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Input data ISAF : Weight Length Mainsail area lufflength main Rated mainsail Gennaker area Crewnumber Board area Board Depth Carbon mast |
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Values 104 kg (including gennaker) 5.00 mtr. variable (example : 14,85 sq.mtr) variable (example : 8,0 mtr.) 13 sq.mtr. 17,5 sq. mtr. 1 person 0,20 sq. mtr. (Set by SCHRS) 0,70 mtr. (Set by SCHRS) Yes |
ISAF handicap system Rating carbon = 0,9745 = 0,97 Rating alu mast = 0,9847 = 0,98 Other ISAF solo boat ratings A-cat class = 0,9696 = 97 Inter 17 R spi (USA) = est 1,00 Inter 17 spi (non USA) = 1,13 / 1,07 Hobie FX-one no spi = 1,04 Hobie 17 = 114 |
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Comments The board measurements are the dimensions that have been officially accepted by the SCHRS committee as average F16 board dimensions. The ISAF mainsail measurement is bigger than that of Texel because ISAF measures the mast area over the entire mast. The 7 kg's weight deduction is a Texel rule and is also applied to the other genaker boats like the F18's. Obviously the F16 HP has an equal to A-cat class handicap rating under the ISAF (SCHRS) handicap system. The other big handicap system in the world are the Portsmouth (USA) and Victoria (AUS) yardsticks these have a rating at this time but they need to converge to their true rating over time and therefor are undependable at this time. One side effect of this is that F16 regulary win handicap racing under these systems are their handicap is still "a peach"; we actually requested faster ratings several times but didn't get one as the committee members didn't believe a 16 ft platform could go that fast. They are starting to believe it now. Go here for the current USA Portsmouth ratings. At this time the Victoria Yardstick still used a modification factor to the Taipan 4.9 rating. |
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The Formula 16 Double handed (2-up) | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Input data Texel : Weight Length Mainsail area Main luff length Rated main area Jib area Jib luff length Rated jib area Gennaker Crewweight |
Values 100 kg (+7 kg genaker = 107 kg) 5.00 mtr. variable (example : 14,85 sq.mtr) variable (example : 8,0 mtr.) 13,00 sq.mtr. variable (example : 3,65 sq.mtr.) variable (example : 5,49 mtr.) 3,50 sq. mtr. Yes 150 kg (by Texel definition) |
Texel (current) Rating 2002 = 102,43 = 102 Other Texel 2002 ratings F18 class 2002 = 101,98 = 102 Nacra 6.0 /5.8 / 5.5 = 100 /103 / 105 Hobie 18 spi = 105 Hurricane 5,9 sport (spi) = 98 iF20 = 96 Olympic Tornado = 94 |
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Input data ISAF : Weight Length Mainsail area lufflength main Rated mainsail Jib area Jib luff length Rated jibsail Genaker area Crewnumber Board area Board Depth Carbon mast |
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Values 107 kg (including gennaker) 5.00 mtr. variable (example : 14,85 sq.mtr) variable (example : 8,0 mtr.) 13 sq.mtr. variable (example : 3,70 sq. mtr.) variable (example : 4,95 mtr.) 3,50 sq. mtr. 17,5 sq. mtr. 2 person 0,20 sq. mtr. (not fixed by rules) 0,70 mtr. (not fixed by rules) Yes |
ISAF handicap system Rating alu mast = 1,0195 = 1,02 Rating carbon = 1,0089 = 1,01 Other ISAF solo boat ratings F18 class = 1,0062 = 1,01 Nacra 6.0 / 5.8 = 0,98 / 1,00 Hobie 18 = 109 Hurricane 5,9 = 1,01 iF20 = 0,94 Olympic Tornado = 0,94 |
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Comments The board measurements are the dimensions that have been officially accepted by the SCHRS committee as average F16 board dimensions. The ISAF mainsail measurement is bigger than that of Texel because ISAF measures the mast area over the entire mast. The 7 kg's weight deduction is a Texel rule and is also applied to the other genaker boats like the F18's. Obviously the F16 HP has an equal to F18 class handicap rating under both the ISAF (SCHRS) and Texel handicap systems. Only when the F16 is fitted with an aluminium mast is she rated slower but there is talk of abandonning this carbon mast correction and rated both masts the same as Texel does. The other big handicap system in the world are the Portsmouth (USA) and Victoria (AUS) yardsticks these have a rating at this time but they need to converge to their true rating over time and therefor are undependable at this time. One side effect of this is that F16 regulary win handicap racing under these systems are their handicap is still "a peach"; we actually requested faster ratings several times but didn't get one as the committee members didn't believe a 16 ft platform could go that fast. They are starting to believe it now. Go here for the current USA Portsmouth ratings. At this time the Victoria Yardstick still used a modification factor to the Taipan 4.9 rating. |
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Go back to website Formula 16 class | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Created by : Projectgroup, 1 november 2001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||