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

Ya I tend to agree with you. I don’t really think it ever was a very viable or effective concept that yielded any truly beneficial results in performance. But it was fun trying to dream something like this up.

The principals do work, as in motor assisted hovercraft.......maybe one day someone will sort it out.......havn't seen what Herb has done

 Imho…Just keep on putting fins on the bottom in the right places…

  It makes so much more sense…    K.I.S.S.  technology prevails…

If the inducted “ported” hole through the board was any better, easier, or as adjustable as the common fin system, we’d see thousands of them…Production shapers would not want to do this on a regular basis…

 It would be fun to watch the fin manufacturers scramble though, wouldn’t it ?  Then again  :  More lost jobs and skills…

Again–To reinterate–Air induction only works at speed–I shaped shallow, mid, and deep V concaves, and rode them on the North Shore in the early 70’s–(70-73)–Unless you had a a good amount of power )Wave energy), the concaves slowed you down considerably–Too much wetted surface–Once you dropped in, it depended on the path taken–Pull in high and tight, with rail to the wall, the concave hurt big time…  Down the line, minimal turning, they are great- Apply them to the short light boards now ridden,  the problems can be overcome with short length and a lot of power–They make the concave work when they NEED it-  Concaves do not help blow out fin manuevers---- Apply this to vented boards–Again–I knew Tom Ferguson, who lived with Morey on the Big Island, ('72 or so)–He recounted to me , as Morey’s team rider, if you want to call it that, that the boards would take off like a shot, if down the line-You couldn’t turn them, and , with the lava reefs, sometimes resulted into some spectacular endings.  Vinny , another friend, had limited success with the Vented slot boards–(As an aside, the tripped out  acid board he shaped and was air brused just sold last year at the Surf auction, for a good price–Unfortunately , I don’t think that Vinny still owned it)   . My viewpoint is still the basic, fast board= hard rails, flat bottom–Control is a variable based on hard rails.  Rocker and fin placement,  as mentioned above,  are theories  that don’t get the proper respect.  Call me whatever–Too old to care–Mac

Kiterider is on the money IMHO as the K.I.S.S. does seem to always sort the chaff from the wheat.

I got involved with this whole concept back in the 80’s (so not claiming sh%T) and found it just did not work.

But to try and tell how much air was going through the vents I thouhgt up the idea of measuring it by sound. If you can imagine blowing a whistle soft or hard…the sound pitch changes. So by cutting up some cheap platic toy whistles and ‘tuning them’ to sound a bit different, i figured i could determine by sound have much air flow was passing through the varois vents at a paticular stage of the manouver I was doing and relate that to the feel the board feeding back to me …so effetively I had a aural and physical measure of performace…

What was the result ??? I am interested to see who can guess…

Rocky

I would guess that you had a whistling surfboard.

Thanks Mitch, I will record that comment on the whiteboard and await further ‘opins’ from our iother worthy contestants…hey we a re talkin BIG …I mean BIG  prizes here for the correct answer !! ( a tip for the uneducated to the ways of the devious Rocky…the answer may not be what one expects)

Smartarse, teasing little pri$k…Rocky

Now can you make a board that can whistle " Stairway to Heaven "

I’d put my money down on a pretty quiet ride. If any whistling, not much.

they do work.

Ok,Ok, …artz, ‘you da man’…ya see having played the flute/recorder at school (and let me tell ya, I could really get a jam session goin on that thing…girls in the class throwing knickers at me …the whole gig) and tok to the water with my new vented invention to vent some frustration…well you get the picture.

Well first wave I drop into on my forehand delivers a range of glorious notes as I drive off the bottom (from b-flat to e- minor and acrooss the scale…for the technically and musically savy amoungst us) and I now applied both my musical and surfing talents, gracefully moving my toes on and off the venting holes through each manouver.

As fate would have it, a struggling music producer/surf bum was paddling out as I tore down the line with a near perfect rendition of “greensleeves”…you all know that one the ice cream truck played. 

It ws a hot sunny day and I surfed for hours with my new found musical friend, him riding backwards along each wave conducting, while i belted out tune after tune…as they say in Hollywood, the rest is history. See his name was Floydd and he got pretty damn sunburnt that day…personally I thought he was more bright red than pink, but thats another story…and so Artz, you got it dead right bro…that is the true story of how the infamous tune “Stairway to Heaven” was concieved, and I can only say you must have been out there that fateful day to have such an intricate knowledge of such things. So I am sorry that I can not award you the BIG prize because rule 14.2 (c) denotes …NO CHEATING.

So there you have it swaylockians, a true story to tell the grandkids…and if i get time …the story of “Another Brick in the Wall” concieved on “the vent” a very crowded session at Rincon with Floydd and the boys is a doozey. BTW he recovered from the sunburn, but was scarred for life.

Thanks for listening…

Rocky

I Win! Wear’s my prize?

[quote=“$1”]

I Win! Wear’s my prize?

[/quote

Mitch…M I T C H Y buddy, as the soup natzi would say…“no prize for you”. Not only did you cheat by being there on theat fateful day but then you go and embarress youself with spelling and butchery of the English language that should see you arested.

I mean…‘wears my prize?’…if you had of asked what the prize was (in fact it was a crutchless leopard print size 8 leotard) you may not of wanted to ‘wear’ it at all!!

But i do feel soory for you and am sending a Braille copy of an unheard version (obviously) of Pink Flyod doing ‘Silent Night’…it feels insane. Just tell me ‘wear’ to send it and I wll get santa to deliver it personally

Ta,

Rocky

Hey Rock , correcting spelling mistakes on forums is for poofters !

Man, you’re brutal. All right it’s spelled, where’s or were is. And I didn’t cheat. It was artz that you said was out there on fateful day not me.

Thanks kayu

......no wucken furries WCraft.......save the crotchless leotards for that "special ocassion".........

Okay, don’t know quite what to make of that but nice furniture by the way. Your boards looks great to.

Now did I ever say i wasn’t one of those foot stools ( as in a poof to rest one weary legs whilst reclining in an armchair).

And , YES i got all twisted out of shape with poor 'ol Mitch ( the below average speller) who claimed a prize he was not even entitled too…hey being in control of such wayward plebs is not easy.

So unless someone can explain the originanion of ‘staiway to Heaven’ better than my TRUE story…then go and get VENTED…in the nicest possible way that is.

Rocky

Stairway to Heaven ?.....got something to do with hobbits and female elves , I think.........Bob Dylan climbed those stairs and found a closed door at the top..