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Old 5th December 2008, 05:13 AM   #1
nonopr
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Default 2008 iSonic 122/Fins?????

I plan using this board with a 7.6, 8.4 and 9.2. What size fins?
Thanks for the recommendations.
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Old 5th December 2008, 07:00 AM   #2
Remi
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Hi Nonopr,

Befor to answer, I would like to know your weight and what kind of sails.

All the best
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Old 5th December 2008, 07:19 AM   #3
nonopr
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Yep, I am 170 lbs/76 kilos and MauiSails TR-4's. Another question is the box in that board actually a deep tuttle or a regular tuttle box.
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Old 5th December 2008, 11:26 AM   #4
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For all iSonics: Take the tail width (width one foot off (30,5cm)) and the longest fin is -4cm the shortest -8cm.
E.G. tail widht iS101 09 = 45,4cm: max is a 41/42cm fin and min a 37/38
use the shortes for small sails and the longest for your biggest sail :-)
For top speed purposes and deep downwind you can go down to -10cm but not more. Better to use than a smaller board.
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Old 5th December 2008, 09:19 PM   #5
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Perfect description, Pfaffi. Nonopro, you should use 42 - 46 cm. I really like the 44 Vector Canfire on the 122. You are a bit lighter than me. So you could try a 42 for the smaller sizes and 46 for 9,2. If you will grab the 9,2 you definitely will have very light wind.

All the best,
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Old 5th December 2008, 10:06 PM   #6
nonopr
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Chris, I order already the Canefire 44 for the 9.2.
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Old 6th December 2008, 02:38 AM   #7
MartinJE
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Can't go past C3 Venoms: 40/42; 44/46 - 2008 Isonic 122 @85kg with 7m6 and 8m8 Naish Redlines - I use the larger of the two ...
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Old 6th December 2008, 05:15 AM   #8
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I wouldn't agree with that formula (one foot off minus 4-8cm). For iS122, ofo 52.8cm, it gives fin range of 45-49cm, so Starboard gave us wrong smaller fin ;-)

Imho iS122 works really well with 40-42 fins for well powered 7.0-7.5.
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Old 6th December 2008, 03:38 PM   #9
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Hi Screamer!
Go for a Slalom Comp and you will know why a smaller/bigger fin than recommended out of my formula is useless. Usually if you use a wide board you have low wind conditions, so you will go a 8 course. If the wind is shifting there will be the need to go a little upwind to one side. For that you need the bigger fin. If you have high wind conditions for your desided combo use the smaller one. If you deside to big (out of my formula) you will ride your board like a Formula and you nevver reach an adequate top end speed. If you deside to small the board will not start flying because you cant force your back foot. Out of my own experiance a 7-7,5 on a iS122 is very very small.
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Old 6th December 2008, 06:27 PM   #10
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In my opinion a 7,7 worked great on the 122. Was my favourite combination. 7,7 CR plus iSonic 122 plus 44. Also 8,3 felt really nice. 9,0 could feel tricky, but was a great setup for lighter winds and used a 48 later the season for teh big sail. I helped to get into planning, but did not increase the top speed.

Chris
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