Designed a weird fishtail, wanted to get anyones advice

nOtyRmOm

Member
Ik I could’ve gone to ski builder forums for this but as far as geometry and everything goes I wanted to get anyones advice as to how it would perform if I built it. Core would be poplar and beech with carbon stringers.

1024715.jpeg
 
I don’t know shit about engineering but didn’t the black crows people say their new swallow tail design is purely aesthetic and there’s no real benefit to it?
 
14372083:armada1652 said:
150mm tip wayyy to big. Ski tip would make the ski be slow.

I agree with mr armada over here, the tip and tail seem to be too fat compared to the waist width. I really dig the graphic design though, the scales are fire
 
Cool sketch!

The right swallow tail design absolutely does make a difference. The most important thing is the difference in surface area that causes the tail to sink and tips to rise. The larger the difference in surface area, the more noticeable the performance in soft snow. You can achieve this surface area difference with larger overall taper angle (tips being wider than tail) or a pin tail design BUT swallow tails allows the effective edge to be longer witch makes the skis more versatile on harder snow. Hope that makes sense.
 
So maybe make it like 145 tip 130 tail?

14372086:LINEenginerd said:
Cool sketch!

The right swallow tail design absolutely does make a difference. The most important thing is the difference in surface area that causes the tail to sink and tips to rise. The larger the difference in surface area, the more noticeable the performance in soft snow. You can achieve this surface area difference with larger overall taper angle (tips being wider than tail) or a pin tail design BUT swallow tails allows the effective edge to be longer witch makes the skis more versatile on harder snow. Hope that makes sense.
 
Like Lineenginerd said, swallowtails work, they just help the tail to sink, which the black crows one doesn’t really do. Cool that you draw skis out like that, have done it several times myself, even made s cardboard cutout model like Eric Pollard did. Super fun peoject, i think you should try it out to get a vision of how it will look
 
I like the play on fish tale with the scales, if u did it like a rainbow or brook trout type "scales" on it it would look so sick and people who fly fish would be extra drawn like how that one rainbow trout J skis graphic compelled so many skiers who fly fish to buy. the noodle name and logo is cool too
 
14372144:PimpChimpin said:
You deserve negative karma for this

Imagine stating an opinion in 2022. I think the noodle is alright, I'm getting a lot of cutesy clip arty college kid vibes from it. Which is like kinda turning me off from it because its very overdone but yeah.

Like rn its lookin kinda?? "kawaii" for lack of a better word, fuck I hate saying tht.

iu
 
14372237:DeadB said:
Imagine stating an opinion in 2022. I think the noodle is alright, I'm getting a lot of cutesy clip arty college kid vibes from it. Which is like kinda turning me off from it because its very overdone but yeah.

Like rn its lookin kinda?? "kawaii" for lack of a better word, fuck I hate saying tht.

iu

No no, I’m not hating on OP I’m hating on the guy using :) ;) :(
 
14372223:flavourtown said:
I like the play on fish tale with the scales, if u did it like a rainbow or brook trout type "scales" on it it would look so sick and people who fly fish would be extra drawn like how that one rainbow trout J skis graphic compelled so many skiers who fly fish to buy. the noodle name and logo is cool too

ooo I feel like photorealistic fish scales transitioning into just a solid color would look nice.
 
Nah I get that. Just a play on my last name thought it was neat

14372237:DeadB said:
Imagine stating an opinion in 2022. I think the noodle is alright, I'm getting a lot of cutesy clip arty college kid vibes from it. Which is like kinda turning me off from it because its very overdone but yeah.

Like rn its lookin kinda?? "kawaii" for lack of a better word, fuck I hate saying tht.

iu
 
In the new design it’s 140 tip 132 tail

14372294:jibmtnIII said:
The people who are saying 150 is too wide for the waist are wrong, my dads sakanas have a 105 waist. But the tails are a little excessive, maybe go for 125 or 130
 
14372050:DesertStix said:
I don’t know shit about engineering but didn’t the black crows people say their new swallow tail design is purely aesthetic and there’s no real benefit to it?

Yes but that was JRs reasoning behind it. The Sakanas and Pescados actually do make a difference like [tag=137655]@LINEenginerd[/tag] said. The new Miriam Cor is aesthetic because they chose to implement it in a way that doesn’t make a mechanical difference
 
i think the guys over on skibuilders would have already told you, but you can download and install monkey cam to design the shape.
https://github.com/mikemag/MonkeyCAM/releases. you use it to can print out templates to cut bases, molds and so on.

are you set on reverse camber tho? you wont get much pop out of the turn on groomers. i guess its too late since the mold is made already...
 
14377073:ajbski said:
i think the guys over on skibuilders would have already told you, but you can download and install monkey cam to design the shape.
https://github.com/mikemag/MonkeyCAM/releases. you use it to can print out templates to cut bases, molds and so on.

are you set on reverse camber tho? you wont get much pop out of the turn on groomers. i guess its too late since the mold is made already...

oops sorry. sno cad x is what you need. my bad. havent made skis in a long time.
https://github.com/mikemag/snoCAD-X/releases
 
1026138.png

ok nvm about the reverse camber. i saw the 3mm of camber. i think its gonna be hard to get the core to press into that shape and hold. but i could be wrong.

snowcad doesnt really support rocker. so my previous post are garbage. sorry.

i think with that much rocker the ski going to be floppy on hard pack.
 
I actually looked up the pescado blister review and copied its rocker profile, tweaked the shape a bit and the rocker, camber but im hoping it doesn't ski like total shit

14377104:ajbski said:
View attachment 1026138

ok nvm about the reverse camber. i saw the 3mm of camber. i think its gonna be hard to get the core to press into that shape and hold. but i could be wrong.

snowcad doesnt really support rocker. so my previous post are garbage. sorry.

i think with that much rocker the ski going to be floppy on hard pack.
 
14377121:nOtyRmOm123 said:
I actually looked up the pescado blister review and copied its rocker profile, tweaked the shape a bit and the rocker, camber but im hoping it doesn't ski like total shit

compared to the pescado, i think your proportions are a little bit off. almost everything is ski-able, really the most important part of a home build is getting a good base grind.

if i were you, id:

- increase the running length of the ski (shorter tip/tail rocker; more cambered area)

- lose the extra radius for the tip and tail. the rocker should be enough for your tip rise.

- move the widest point of the nose a little bit down the ski. so the effective edge is closer to your foot and rides like a shorter ski on hard pack

- add a little more camber 1cm
 
14377137:ajbski said:
compared to the pescado, i think your proportions are a little bit off. almost everything is ski-able, really the most important part of a home build is getting a good base grind.

if i were you, id:

- increase the running length of the ski (shorter tip/tail rocker; more cambered area)

- lose the extra radius for the tip and tail. the rocker should be enough for your tip rise.

- move the widest point of the nose a little bit down the ski. so the effective edge is closer to your foot and rides like a shorter ski on hard pack

- add a little more camber 1cm

Thanks man, appreciate it!
 
The pink foam has enough compressive strength to not deform under pressure? Or are you pressing under vacuum?

I hear the tail sinking argument, and I've never skied a swallow tail ski so I can't actually speak to it. Is it actually enough surface area reduction to matter? The tail of a ski is, in the grand scheme of things, not a lot of surface area, though it is at the end of a lever. Without a really deep cut, are you even in a realm where it matters that much? There's probably something to be said for allowing for extreme flex on the extremities with a deep swallow too. But I think when people say "we reduced the tail area by x%" it's a bit misleading. You took a low surface area item and made it lower, and that number changes depending on where you start measuring. So was it ever hard to keep the tails sunken since even a high area tail isn't all that much area, given that I'm a human of some mass and strength? Again, I don't know and I'd like try it, and am 100% okay with being wrong. But it seems like one of those things where it's like yeah, we made your 100hp car 110hp so it's technically faster. Except either way it's in the category of slow af.

I shape surfboards, and the tail area of a surfboard is much higher than on skis. On a wide tail board the force exerted due to the high surface area is significant when the forces pushing against it are considered, aka a human standing on it. Reducing that by half makes a substantial difference when trying to sink the tail, whether you pin it or swallow it. You go from enough force to support said human to making that human sink the tail into the water and stall. Pinning it and swallow do different things, with the wide swallow keeping a longer, straighter rail line projecting a bit more than a pin. I assume a pintail ski would carve poorly, or ski like early JJs where the sidecut was compressed to like a snowblade length underfoot. People even do swallow flextails, where the foam feathers out to a solid fiberglass tail that's very thin, which supposedly flexes in the water and occasionally chops your foot off. That's a concept I'd like to see attempted on a ski, where the tail can really bend at the ends due to a deep swallow and even twist when the ski is cranked over.
 
Idk might throw some demos lying around at the shop on to get some homies on em

14377465:Thegratefulskier said:
Where do I sign up to test these? I will give you a very detailed review.
 
Currently you are running about a 16m sidecut radius. I would consider something more in the range of 18+ as I feel like this could be kind of catchy in the tips especially since these are going to ski short due to the tails sinking from the swallow tail.
 
14377054:LukeTheWaffle said:
why is the tail rising even though its a swallow?

I thought about that too. I would hope its more rocker than anything although its drawn more like a twin. The rocker would help it be less catchy in more variable snow and that's important as these could easily feel like boats in front of you
 
14377465:Thegratefulskier said:
Where do I sign up to test these? I will give you a very detailed review.

well i just bought demos and am laying them up in a week so come out to Wisconsin pay for my lift ticket and "make the whole mountain your playground"
 
14386649:nOtyRmOm123 said:
well i just bought demos and am laying them up in a week so come out to Wisconsin pay for my lift ticket and "make the whole mountain your playground"

W. What hill???
 
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