Forums > Stand Up Paddle General

starboard hypernut fin size

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Created by steve8 A week ago, 11 Feb 2020
steve8
NSW, 2 posts
11 Feb 2020 1:48PM
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HI ALL, I'M ON MY 2ND HYPERNUT, 7'2" X 28". I'VE BEEN RIDING IT WITH THE STANDARD 4.7" FRONT FINS AND A SET OF 3 1/2" REAR FINS.
I'M LOOKING TO GET LARGER FRONT FINS- 5.5" FINS USUALLY THESE FINS ARE FOR TWIN FIN SURFBOARDS.
I TRIED 5" FRONT FINS AND SAME 3" TRAILERS ON MY OTHER SUP-NAISH RAPTOR 7'X31" AND THEY WERE GREAT. THAT'S WHY I'M THINKING 5.5"S ON MY HYPERNUT MIGHT LOOSEN IT UP EVEN MORE. MY FRIEND SAID THAT MAYBE THE 5.5 S ARE POSSIBLY TOO LARGE FOR A SUP AND SNAP THE FINS OR DAMAGE THE PLUGS.
ANY THOUGHTS ON THIS PLEASE?

colas
3654 posts
11 Feb 2020 2:42PM
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Twin fins can be too big and rip out the old round FCS plugs that were not reinforced on old prone surfboards, but there is no risk on SUPs as they are build to stand higher forces. Especially on sandwich boards, and brands having a windsurfing or kiting experience like Starboard.

However, I would highly suggest that you try Quobba fins, it will be a performance jump much bigger than any other kind of traditional fins.
Either a thruster set, Large if you favor grip, Medium if you favor speed and glide, or mail quobba to have a custom quad set with two front L and two rear M either the side fins for more grip or 2 center fins for smoother rail to rail.

My "tomo-like" small wave board:



A faster and more lively setup than the twin fins I used before: Here with 5.61" AM twins, but I also used MR ones for slower waves, and small 3.47" TC rears:



Helpful hint: the full dimensions of all the FCS fins: www.surffcs.eu/pages/fcs-fin-data

Surlygringo
12 posts
12 Feb 2020 4:59AM
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I used to windsurf a carbon hypernut with some 6" sidefins. I didn't surf it with fins that big, but I don't think it would be a problem.

MickMc
VIC, 360 posts
12 Feb 2020 8:44AM
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I snapped one of my front fins off on my hypernut and stuck in smaller fronts as a temporary replacement. It loosened the board up but lost a bit of drive which was what I had expected. I would have thought that the 3" trailers vs the longer 3.5" trailers were what loosened up your Naish Raptor. Smaller fins on the back make it easier to pivot. The back fins on the latest hypernuts are smaller than on the older models and really lift the performance. Of course the amount of rake etc also make a big difference .... as in life, size isn't everything!

Johndesu
NSW, 238 posts
12 Feb 2020 1:27PM
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Select to expand quote
steve8 said..
HI ALL, I'M ON MY 2ND HYPERNUT, 7'2" X 28". I'VE BEEN RIDING IT WITH THE STANDARD 4.7" FRONT FINS AND A SET OF 3 1/2" REAR FINS.
I'M LOOKING TO GET LARGER FRONT FINS- 5.5" FINS USUALLY THESE FINS ARE FOR TWIN FIN SURFBOARDS.
I TRIED 5" FRONT FINS AND SAME 3" TRAILERS ON MY OTHER SUP-NAISH RAPTOR 7'X31" AND THEY WERE GREAT. THAT'S WHY I'M THINKING 5.5"S ON MY HYPERNUT MIGHT LOOSEN IT UP EVEN MORE. MY FRIEND SAID THAT MAYBE THE 5.5 S ARE POSSIBLY TOO LARGE FOR A SUP AND SNAP THE FINS OR DAMAGE THE PLUGS.
ANY THOUGHTS ON THIS PLEASE?


I only use Quobba fins (same as colas photo) in my Hypernut (6.10) or large Cdrives in front and small/medium Cdrives in back when the surf in not that good :-)

steve8
NSW, 2 posts
12 Feb 2020 9:33PM
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JUST GOT BACK ONLINE. THANKS HEAPS GUYS FOR ALL OF YOUR ADVICE !!!
SOUNDS LIKE A FEW GREAT OPTIONS TO CONSIDER, WILL CHECK OUT YOUR SUGGESTIONS AND TAKE IT FROM THERE.
P.S I'M 64 KILOS. I'M ONLY RIDING MY SUPS UP TO 4 FOOT SO FAR, ANY BIGGER'S A BIT HARD TO MANAGE AT THE MO SO THEN IT"S BACK TO MY SHORTBOARDS. I'VE ONLY RIDDEN THIS HYPERNUT PROBABLY A DOZEN TIMES, STILL FALLING OFF A BIT WHEN I"M NOT PADDLING OR RIDING, THE 3 INCHES NARROWER FROM THE RAPTOR IS TAKING A BIT TO GET USED TO BUT SO FAR SO GOOD.
THANKS AGAIN, HAPPY SURFING !!!



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