Dolphin Tail: Wing-Tail Surfboard

I posted the original inspiration and concept evolution so some could see how I arrived at the design.

It is interesting to see how others interpret the design.  It is a bit like art.  Everybody sees something different.

As a designer and inventor, I am sure you have your own take about using the concept.  I look forward to seeing your interpretation.

A template is 2-dimensional.  There is a 3rd dimension.  That dimension is the component that motivated the development of my modified dolphin-tail concept.  The tail template is the foundation for the 3-D element (the secret sauce)

See PM.

 

flex fin (Tartar sauce)

this is a fun guessing game.

Seriously though, I also came up with a new tail shape yesterday, I’ll post a pic later.

 

 

 

here, I guess I’ll call it the fish fly tail… get it?

 

I cannot see the second picture?

The monofin is actually much closer to my template concept – but no flex sauce.

All in good fun …

This dropped onto my screen today:

https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-frc1/1184928_682744015068980_1036769556_n.jpg

Thanks for the confirmation.

My take on the principal forces opposing gravity is that they are shifting in and out of ram lift and centripetal force.

Both would be related to velocity, mass and total bottom surface in contact with water.

I will continue discussion off-forum later …

I can see the second photo now Keith.

Interesting tail design.  I like it.

I’d like to know where I can order some of this damn secret sauce. Everyone got some except for me :slight_smile:

That would be SharkSkin texture.    Hee, hee.

that looks good

keith,

back in the day we'd call that a wing swallow.

herb

sb,

got it now...............

remember most of the pressure on a moving board is going up .

herb

3 pages before it dawned on me this was a tail design and not a fin design - I've been working too hard lately!

Since I have given one member the recipe for my secret sauce, it seems only fair that I post the essence for everybody.

I am a scientist at the core.  One of the basic tenets of true science is to make information/discoveries available to all.
A template is 2-dimensional (horizontal layout).  The 3rd dimension would be the shape or profile of the tail in vertical section.  The main ingredient for my secret sauce is the asymmetric foil.  I developed the angular dolphin-tail concept because I felt it would be the best foundation for incorporating an asymmetric foil.  Basically, the modified dolphin tail is a WingTail -- not to be confused with bumps on a rail.
More later **...**
http://ffden-2.phys.uaf.edu/211_fall2002.web.dir/josh_palmer/berni%20wing.gif

Interesting…good feature for control at the cost of some drag, but the asymmetric foil pictured above requires fluid flow over both surfaces to work.  Most tails are planing surfaces…unless you intend the ‘tips’ to submerge…so they would act as ‘horizontal’ fins…

JSS

I love ideas backed by reason.

… I don’t understand either just yet. By the sounds of it, stoneburner’s one swiched on lad.

Whats going on here??

The Mirandon family has done this stuff before. Eli was ripping on a strange design. I did a google search of Eli and found these images.

http://www.surfimages.com/blog/wp-content/uploads/2012/06/eli-mirandon-holding-surfboard.jpg

http://1.bp.blogspot.com/_xJqdiunbbcE/TKT9XY7rf6I/AAAAAAAAA3o/DRUR4qlnh4o/s400/type_A2.jpg

Check the double porpose tail on his blog


Oh, trust me, you are.     Very much so.      Possibly the best example of a solution to a problem, that doesn’t exist.

Nothing.

 

Stone,

 

The main point to take away from this post is the word ‘ventilated’.  If your first try at this does not work, use a fence to prevent ventilation.  That will pose an ergonomic + safety issue, though.

 

http://en.wikipedia.org/wiki/Wing_fence

 

JSS

 

 

And I just thought the tail looked cool

:wink: