Need some shapers help....

This is the new one I'll be working on.
It's designed around my 8'7" which went amazing (best thing I've ever ridden) but I'm changing a couple things slightly. That being rail shape, bottom shape and volume distribution.

I've tried to keep volume around 105 to 110L but lose volume in the tail. So there is more volume forward of centre. I've brought the tail in about 1.5" but kept the nose slightly fuller to keep some glide when paddling for waves. I've reduced thickness in the tail. Bottom will be double concave V tail into flat middle and single concave nose.

8'8" x 28.5" x 4.1" and 106L or there abouts.

Any problems here that I can't see?

One thing I'm trying to reduce is the board slipping on bigger steeper faces. 4ft and under my 8'7" was good but over 4ft and it would sometimes slip/not hold. It's not a major problem but I've experienced it a few times. I've noticed the new small Naish's now run an edge on the bottom rail to almost halfway up the board. Would this help the rail bite into a steeper face?

Hey Mr Bnaccas
hope your well. glad your enjoying shaping your own boards.
This is only my opinion, might help.
You should be able to thin out the board all over at your weight and ability. maybe another 10 litres. Or scrub those rails down a bit. worst case scenario, you dont paddle as fast.
Consider going flat in the nose, single concave under your stance into double in the tail. forget the Vee!!! Vee is for lady men!!!!!!.
Dont be afraid to harden up those edges either. Have a look at where your feet are in the "surfing stance" and work it out from there.
Most important - get your side fin placement right. make sure you decide on if your going to ride it purley as a thruster or 2 + 1.
As i said, not gospel only a humble mans opinion, but a little food for thought.
By the way, it looks really really good.

That down rail looks really old school I would tuck the edge a bit.

Still a lot of V there I like that for rail to rail, not so popular with a lot of shortboard shapers now.

Single into double concave with v nice tail rocker tuck the edges a bit lovely looking board.

What about this? 5mm V and 4mm concaves. With more square rail.



Original tail was designed to be thinner/less volume to hopefully gouge harder turns.

Hey Brendan, how heavy are you? I am 82 kg - mine is 110 litres approx.

With my semi gun I went with a very hard edge that runs at least half way up the rail line only fading about a third from the nose. I had a couple of comments about it sticking and catching but it is the safest, loosest SUP I have ridden. By loose I mean the way it can draw a very tight arc if required.

This is aided by the rocker and IMO the slight V in the tail and pulled in nose. I pulled in the nose (as it is a semi gun) but this has not affected the 'glide' at all, it paddles unbelievable fast. I think there are a lot of assumptions about sup design that don't hold true and that is one of em.

Bear in mind this is only 27" wide (but 4 1/2) thick, it holds on the wave face unbelievable and is unreal for barrels and late take offs where you need to hold your line on the wave face.

That cross section of the tail looks sweet and is almost identical to mine except I have tucked the rails slightly. I reckon a small amount of V in the tail is benificial to SUPs as they are quite wide, as is reducing the tail area and overall width.

Keep the rails fine at the tail definately - looks like a cracker of a board!

hey mate just a thought add more nose lift it will surf better and want really effect the glide. i weighting at 71 to 73 kgs and riding under a 100 litres its fine also a narrow tail is deffinately the go good luck

just my opion ,its very much short board ,i would like to see more nose and tail rocker ,4 ,1/2 nose 3 .1/2 tail flat nose no concave ,large singa concavel under front foot in to a very shallow singal thru the tail .make the widest thickest roundest part of the board 2 to 3 inches in front of center ,to get a nice thin board with 110 odd liters 3 and a 1/2 inch thick in that length use a concave deck 1/4 of a inch .spread the foam out to the rails ,this is a 8,3 i did last year ,3 and 1/2 thick with a concave deck ,

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yeah i thought it was saying 3 icnhes below nose rocker in the below profile? 6 plus nose rocker sounds heaps better

Narrow boards work better in steeper more powerful waves. Wider works well in smaller less powerful waves. Depends on what you want the board to do.

Yeah I haven't ridden heaps of short SUP but from the to I have made the tail width is very noticable.
My first board was 8'3" and was very loose and at time I could tail slide it but it was harder to throw
buckets. My second board was 8'7" and slightly narrower, but almost 2" narrower in the tail.
It is faster and heaps easier to bury the rail and the fins bite a lot better.

I think the Naish 8'10" is about 18" in the tail and this shape will end up being 16.5" which should
make quite a difference.

Bnaccas said...

Anyone know how to mark out a quad fin setup?
Thinking I might try a quad in this one.

I've always been a thruster/2+1 guy but I like the idea of a quad. Would it work ok in this board shape?

PSH is placing the rear fins 7.88" behind the fronts and 1.38" off the rail. C4 is placing the rears 8.12" behind the fronts and about the same off the rail.

Project the toe of the rear fins, to the same point you use for the fronts.

Stretch puts his rear fins inward 0.5" farther off the rail than his fronts. Follow Stretch's setting for more drive.

forgot to mention fronts fins at 16" off tail.

Mckee surf doesn't cover boards as big as SUPs. Our tails are outside his range. He also favors rear fins pushed farther toward the center, which stiffens the board up and increases drive. Not what I want in my SUPs.