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19th August 2011 12:28 AM
MerryJones SHorter will be allways better.
18th August 2011 12:07 PM
Roger Nixon 196,
Are you trying to put a Deep Tuttle Fin in a Std. Tuttle fin box?
That will not work without some serious modification of the Deep Tuttle fin head.
The fin head/root is 18 mm too tall to fin and the fin will never go down into the
std. Tuttle box.
If you need to know how much shorter the screws are for a the screws needed to
put a std. Tuttle fin in a Deep Tuttle fin box are 18-20 mm longer than the stock screws.
If you have the long screws, and need the short ones, it's best to measure them, or
take a look at the fin screw chart.
18th August 2011 12:46 AM
Johan Gelauff buy shorter screws!!
16th August 2011 10:37 PM
nixon196 Roger, you said that the length of fin screws for isonica tuttle box 127 for a long 18-20 mm, and provided you know how to be a long fin screws from isonic 121/2010. but deep tuttle. I'm driving tuttle box instead of deep tuttle box, and now I bought a deep tuttle fin, but the monster screws. I had them now measured, but if you already know how long, whether you can tell me?
And by the way, I bought select 43 S11race for sail 7.8 and the board is121, a width of 75cm. Is that ok?

Sorry ggzaprešić boy, this is my question is not part of your problem.
16th August 2011 09:00 PM
Johan Gelauff (38 cm ) Maybe it's a bit exaggerated
recommended fin range 38-50 = most minimum to maximum most
I saild it with a MFC 44 cm rc2 (i'm 87kg) and with a 7,8m and 8,6m sail
I think its to small (It only works in very strong winds)
Normally I use a 46cm fin with my 7.8 m sail. (select, fin with a lot of lift)
It would at least be a 45cm
And a 9.7 m sail on it works perfectly with a 48 to 50 cm fin.
fins bigger than 50cm also give no further improvement.
8th July 2011 04:46 PM
Farlo Bizarre: 7.5 is the smallest recommended sail and the fin range 38-50. What does the sticker say about 7.5 sail/fin combination? What is the smallest fin to go with 57.5 tail width? I would think 46 makes sense but why 38 then?
8th July 2011 11:14 AM
Roger Remi knows that board.... I've never sailed it... but I agree, 41 is way too small for the tail width.
46 cm would seem about right for a 7.5 m2 rig!
8th July 2011 07:17 AM
Remi Hi CG,

I answer you already : 46

All the best
8th July 2011 02:16 AM
too small fin

Originally Posted by Roger View Post
Hi GG,
41 cm is fine in Std. Tuttle.... plenty of fin head to fin box integrity and strength.
Std. Tuttle in a Deep Tuttle fin box is fine, but you will need longer (18-20 mm) fin screws!
Might have to do some minor fitting and/or shimming to get the fn head truly flush with the
bottom of the board/finbox. Be sure to leave the fin about 1/32" (1 mm) proud of the bottom of
the board as "draw" to really seat the fin head in the tapers of the fin box. Pull it flush with the
Originally Posted by ggzaprešić View Post

I have 85kg and 178 cm. I have new isonic 127.

For 9,5 m2 vapor gastra sail I have fin 49 select elite.

What is your reccomendation is for 7,5 m2 severne overdrive fin.

I have possibility to purchase 41 select elite fin tuttle (not deep tuttle). Is it ok 41 and is it ok tuttle .
Thanks a lot
What is your reccomendation is for fin size 7,5 m2 severne overdrive
7th July 2011 11:22 PM
Remi Hi CG,

For the simple Tuttle box in deep Tuttle box, no problems but the fin is way to small on this board, the board will be sticky on the water and not nice to ride. 46 will be a better option to make the board lively and fast. You have normally a sticker on the board who show you the good combination between sail size on fin, stay as close as possible to this recommendation to get the best of this board, thanks.

Hope this help

All the best
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