free shaping

Like the look of that board. All of Pat's designs are graceful and smooth. What kind of waves is that one intended for?

No extra volume on mine (below) - 70kg rider, 70L board.

Kami - have you made fish tail SUPs before? How do you like them?

Hey Colas, 8-4 x 30 x 4 1/2 ~120l. I'm frothing over the idea of surfing it. I'm curious to see the difference with my 5yo 9-2 x 28 120l performance shape.

And jeanG, that board is sick!!! You are a brave man, 1:1 crazy, I'm going for about 1.2:1. Seems to be my bottom limit. Your board is the board I dream of riding. What Pat's making me is what I can ride.

Waves like this, beachies up to a little overhead. Maybe more if clean.

Nice boards you got both
The main trouble of SUP shape Vs Shorties shape is the volume distribution. Because to paddle stand up without longitudinal yaw need flotation by the tail. So to input this flotation need to improve tail's wide or/and thickness. The limit is when cant bury rails even with help of paddle lever.

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JeanG said..
The big downside to low volume is glide, which is reduced when the entire board is below water. Haha.

So I better like less liters as possible with flotation center in tail to drop in the wave more like a shortie than a gliding longboard , specially when there is strong SE offshore as SurfinJ shows on picture above here.

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JeanG said..
When it comes to volume, things are weird. For me, a 1.1:1 ratio is easier than 1.3:1. The water flowing over the deck keeps the board stable and calm.

So SurfinJ I would go on your design at 110 liters 28.5" wide to induce narrower hip/ tail with still this same curve proportions . Also to put wings on the far tail end to minimize tail area keeping tail width


IWOULD LIKE SPEAKING LIKE COLAS TO SAY TO YOU WHAT I REALLY THINK ABOUT

For who care about this shaping exercice , I've done some adjustment around hips making it mores rounded to fit some more buyoancy close to the tail.

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SoCalGremmy said..
Hey Kami,
That's looking good!
Are you offering this design to fellow Seabreezers? I am in the process of designing a board with a friend/old-time shaper here in SoCal who owes me a board. Your design has most of the overall elements that, for me, I think would make a stable, easy to turn, fast board: snub-nose, parallel Srails, semi-wide fish-tail, single concave bottom in front, transitioning into double concave in front of the fins.
I'm currently surfing a 8'8" Naish x32LE at 141L
What I'm looking for is something a little shorter, but, hopefully more stable for primarily short interval, 2' to head-high beachies.
Me: 5'10, 83kg, intermediate, 60 yrs.
How do you think that shape would be in 8'4 x 31" at about 130+/-L?

Hi SoCalGremmy glad to hear that board looking good ,
To design this board had in mind what did I feel with her little sister I sup with this past summer, 6'5" 27.75" 85 liters fitting my 78 kg 61 years old. As well to the many surfboards I like to seek past decades, I think to some of Waves Tools's board from your place South Cal who made that kind of winged board to fit and turn promptly small waves curl of some no more secret SouthCal spots.
To reply at your question of an 8'4 x 31" at about 130+/-L versus , I will say no. Because that kind of board I design is made to fit the pocket so it has to be as narrow, shorter , ligter ( less volume) to be able to dig rails and fins . Gliding is from speed involved by wave positioning. Nothing else
More than 7 ' SUP can't fit 2' wave pocket and at 83 kg you don't need all that foam to stand up on.IMO
If you trust me when I'm saying this design is stable and take off early on 2' beach break or kind of and really want to spent some time to practice it and not give up at the first fall off over your new toy : I can provide you for free your own file customized to your weight .

SoCalGremmy, dims will be the minimum volume to make float your 85kg plus 7 kg of board/ paddle, so must be a minimum of 92liters with an extra for your confort of 8 liters. So 100 liters, no much otherwise you won't surf with shortboard attitude. Input some more rocker too .
Read infos in inches .This is a 102 liters, 7' long and 29'' wide.

Hi SocalGremmy,I watch the old file of my mate and did some adjustments ; size, rocker narrowing tail as well.
Is this one fit better the bill

oops, I meant 31" wide...

Nice work Kami.

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SoCalGremmy said..
That's looking good.
Can you show it in 3d?
Thanks,
Bob

this new board will be finned with FCS K2 and small B5 like this board I made 4 years ago.

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SoCalGremmy said..
Hi Kami,
Are those last 3d images of my board?

Yes could be yours if I resized to your weight and volume and you agree to have it at 100 liters which is big enough to this kind of board.

Hi Socalgremmy, drawing my own project I already did the more stable board for the length of 7' If you ask to stretch this board too much you will have a ponton IMO
But here we go to 8'2" 31"lup to your request as you see below. Fins are very important; need to be 4 fins as a quatro . As you see there is a flat entry enhanced by concave to paddle on to enter wave, some belly in forward center going into a strong rocker to roll on while surfing along the parallel outline tail completed with good vee concave front of fins to dig rails as much as you can do with some help of the paddle.
Rails are blocky to get more cross balance but this board is thin about below 4" such thin still allowing 115 liters which is enough volume to make you glide paddling because this board is very well balance and float flush in water not sinking from tail
Are you pleased of this

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SoCalGremmy said..
I love it!
I am not in a hurry and don't want to rush you, but, thanks for your hard work...

Tell me more about the bottom at the tail.....

Can you locate the carry handle and locate 2 leash plugs at the tail about 6" apart?

Thanks,
Bob

i'm so pleased you love it
Those past hours I have done some more job on top line as well on the bottom shape on mine , I will do these fine adjustments on yours lately.

About carry handle,has to be done when board finished, fins srew in and almost grip shown on place before stick it and leash fix and roll around the tail. Otherwise handle wouldn't be at correct position, I mean ready to walk down the beach your board perfectly balance hanging in your hand
I will put plugs deck attachement .

My own board in process

Merci has you find it beautiful.
Finally I sent to CNC this morning with some change about the step tail deck because I want to add a some parts of XPE foam which remove the EPS flyer of this board like I did on the white pictured below.

SoCalGremmy, you dont have to go so big even with choppy water because this shape is very stable for its size . Look on this diagram and note the quarters of volume are almost equal so the board go flushed to the water from nose to tail. I will do adjustment to your 8'2"31" but thats not desserve that much volume increase, last call

You very right to point about concaves in a forward position, I've done expressively that because SUP don't use the tail and I think the water release flush to tail . There is no water pressure back of the front fins so the flow is going flat free. Water is releasing or trailing along the sharp edge of the tail. Watch all the new proned shape around with mono concave, they all got deepest concave forward front fins position.

Hi Kami,
Maybe after a while getting good on the 8'2", I'll be ready to go even smaller....
I hope.
Thanks,
Bob