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Rear Quad fins for my board

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Created by Camarillo > 9 months ago, 12 Jul 2016
Camarillo
369 posts
12 Jul 2016 4:41PM
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I wonder what quad fins I should get for this board (7'8"x29" , fast rockerline , futures fin boxes):

I have rears with inside foil untill now but I wonder if other rears would work better

Perhaps symmetrical, 70/30, 80/20 or flat Rears?

I would also have loved to use bigger rears but the finboxes in the rear are the shallow futures....

colas
5364 posts
12 Jul 2016 8:44PM
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It depends on what you want to change? more looseness, more carving, ...

On a board similar to yours (7'6" "tomo"-like), I have a similar setup as yours. (but with C-Drive fins :-) )

A good metaphor is a car: add fin grip (bigger fins, flat or concave inside foil) in front, or decrease in rear to oversteer, and the opposite to understeer.

Camarillo
369 posts
13 Jul 2016 2:50AM
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I have a lot of C-drive fins but they don't fit unfortunately.

This is my first Tomo board and what sometimes happens is that after a takeoff it accelerates so fast that I find myself on the flat before I manage to initiate a turn.

And when I try to turn when I am not with my back foot all the way back it doesn't turn properly and goes staight on the rail

I guess I just have to get used to the board and move to the back quicker.

My board is very similar to the JP slate's only a lot thinner, and some say it is much better as a thruster perhaps i should give that a try.










CAUTION
WA, 1097 posts
13 Jul 2016 8:59AM
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sounds like you may want to work on your paddling take off stance and be back more and in semi-surf stance.

Fin wise, have mentioned recently in fin thread I rate the shapers fins. FOr me big front fins for drive and med to med-l rears for looseness. SO i run big carbon S9 fronts and S6 rears. good mix. Bigger fronts may help you get grip for your bottom turn perhaps?

colas
5364 posts
13 Jul 2016 3:58PM
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Select to expand quote
Camarillo said..
it accelerates so fast that I find myself on the flat before I manage to initiate a turn.


I think you should try 3 things, fin-wise:
- decrease the rear sizes, and increase the fronts if not sufficient: it will help the board turn once the turn is started
- use a thruster setup: a central fin helps starting the turn earlier
- if you tend to lose grip once the turn is started with a thruster setup, go 5 fins (with as small rear quads as you can find). I found out that a 5th central fin helps start thr turn. I don't know why, perhaps because a central fin is never exactly in its water lines, so does not "lock" the board as a quad does?

What you seem to experience is 2 things, or a mix of then:
- difficulty to start the turn, to "unstuck" the board from its track
- difficulty to keep the board turning

BUT, moving your rear foot more in the kickpad may be the best of all solutions :-) As you found out, dont even think of turning these boards without the foot on the pad arch.



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"Rear Quad fins for my board" started by Camarillo