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Nick F 29th May 2010 04:33 AM

Isonic 133 what fin size for sail size.
Hi, Could anyone please tell me what size of fin I should use for my isonic 133 when using my Tushingham lightning 9.4 and TBird 8m sails.
I am 95kg and power off the fin a lot. :eek:
When using the 9.4 sail I used a 48cm fin and found it would not give me much grip, if thats the word I am looking for, but changed it for a 52cm and was better, I don't know if this is due to putting to much pressure on the fin.

Also what size would you recommend for a 6.5 sail ?

Sorry, you have probably heard this question a thousand times before, but would be very grateful for some help and advise.:)

One more thing, when I bought the board it is for deep tuttle fins, why do you get tuttle fins with it and not deep tuttle.



nonopr 29th May 2010 08:22 AM

you need a 50cm fin with your 9.4 for downwind racing. For match up racing with your friends you can go with 52cm.
I recommend this two brands and go with the canefire in carbon molded.
I also recommend and there you go with the D2 in carbon XS.
I will never use that board with a 6.5m sail. Will only use it with 8.m sails and bigger all the way to 9.8m.

Nick F 30th May 2010 12:59 AM

Many thanks for the info. I use the fin off my futura 144 which is 52cm drake, I don't know if I would notice the difference in fin manufacture, due to me not being a pro, and would cost a lot more money for these fins ?


nonopr 31st May 2010 05:58 AM

The fin for the futura is another type of fin not design for the iSonic. It would work but it wont make you board release as it would with a good slalom fin.
I will never use a Drake as they are crap production fins.

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