induction? ( vented / ported / slotted ) boards : what's the principle at work?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Robbyson

That is the way to do it, i am sure!

introduce air in the front, keep drag lower in the back

dont know if your design is the best to try it though?

looks like a great board, you surely are in the states, yeah?

I remember a picture of mr greg griffin posting something similar, it should be on his website

ciao

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

These are very interesting designs!

 

For those of you that have tried these boards out, how would you describe the way it surfs? How do they work compared to the more conventional ways of achieving grip through fins and concave etc.?

 

Very keen to see the video of it being ridden too!

B-Rad!!!

I forgot this thread, because I said that I ll post some pict of this board, etc

I did it 2 years ago or so after couple of emails with B Mackie and G Loehr

5 fish

Side note: Went into Bessell Surfboads in La Jolla today to talk with Tim about his finless creation (http://www.youtube.com/watch?v=FKeg8JAwzbw) and got to talking about hydrodynamics.. I told him about the board above and that I just so happened to have it in my car, he wanted to look it over then said he LOVED it and wanted to borrow it!! Tim Bessell, wants to borrow MY board!!!!!!! How funny is that? It was a huge compliment to me and can't wait to get started on my next project... I "finless" board but one with twin hyrdofoil keels shaped out of the excess rail cut offs....

I'll post Tim's assessment of the inducted board when I get it back later this week..

@<]|:~)

To comment on the first few posts in this thread back on the first few pages. Just keep patents out of the surfboard building industry. It’s my opinion that we should all freely and openly share our ideas and surfboard building  techniques with each-other. If you have some sort of motor go ahead and patent it. but as for shaping, hull or fin design we share that knowledge with each-other to improve our sport and way of life which has always been one of cooperation and friendly exchange of ideas.

**I’ve often thought ****not **about drilling holes through the board from the deck through to the bottom to suck air through to the bottom to create lift. But to some how bore a hole in the bottom at a steep angle or arc about half way through the thickness of the board from the front connecting with one bored from the rear at not as steep an angle with channels leading into the front intake port and out after the rear exhaust port. This utilizes water to create lift not air. Like a series of internal jet ports, this will create a current of water using the water forced in the front ports and then out the rear ports.  In this way water would be forced in through the intake port, being scoped in with the forward movement of the planing hull or bottom of the board over the surface of the waves face and forced out the rear or exhaust port like a jet creating lift and blistering fast speed. A big challenge would be to figure out how to glass these intake and exhaust jet ports. Possibly a plastic or composite insert that you could router out and glass in like a fin box. Hmm, maybe I’ll draw this up and get a patent (sarcasm).   If anyone understands what I mean. I’d like to here your thoughts.

Herb i would not rely on the patten unless you are prepared to spend a lot of money to defend the patten.

I know of someone in the ski industry that has close to 100 pattens Has innovations were ground breaking and in many cases improved performance and safety, in skis and for the most part ski boots. 

  Mel Dalebout, spent a lot of money defending his pattens.  Unless you can foresee sales in the millions of Dollars. I'm not sure I would go to the trouble of a patten.

Now go out and innovate have fun and with some luck you might make a few Bucks.

I visited your blog site… The video’s lack a bit of handy information as to how your fin and  that old vented board work…

  Are you a mute, mate?

At any rate send me a couple of free sample fins and I’ll try them out then verbally tell the surfing world how they perform… Sound like a deal?

Oh yeah…  You start a separate post in the   Industry Talk    forum…

Hi,

Your right there mate I am no writing genius.

You can call me what ever you like so long as it is not late for lunch.

Well I am not sure about a couple but one should do you.

Dont worry about the surfing world they will work it out for themselves I am sure. There will be more than just you who will ride it. I am sure they will voice their opinion real fast.

Thank you

WaveFin

 

Wavefin,

Winged fins were being done in La Jolla, by Alan Nelson, in 1956/57.    Also were done in 1966 by both Hansen Surfboards, and Ekstrom Surfboards.    Hansen and Ekstrom both had adjustblity as a feature.    There were others too, but can't remember thier names at the moment.    My point is, that it's not a new idea.    I know about this, because I was there, and saw it.   You are somewhat late to the party mate!   

ha ha

Hi,

I knew I came here for some reason to be set straight.

Important things you learn if I was not here I would not have learnt that I will change what I say.

 

Thank you

WaveFin

Hi,

Who invented the twin Fin and when.

Thak you

WaveFin

Heating up in here too? Must be Kelly and or that red latex jockstrap on steroids you guys been lookin at. 

 

Vented boards might be what you need.

 

I find the idea fascinating.

[quote="$1"]

Who invented the twin Fin and when.

[/quote]

There is a mid 1930's photo of Tom Blake posing with a board with twin fins.    Some say he was the first to put a fin on a surfboard, others say it was Woody Brown.      Bob Simmons was making twin fin boards in the mid/late 1940's.   Hope that is helpful.

 

1930’s photo of Tom Blake posing with a board with twin fins

So around that time you think the first adjustable wing twin came out

or was it a single fin that was the first adjustable fin

[quote="$1"]

 

1930's photo of Tom Blake posing with a board with twin fins

So around that time you think the first adjustable wing twin came out

[/quote]

NO.

[quote="$1"]

  was it a single fin that was the first adjustable fin

[/quote]

YES.