http://www.swellnet.com/news/design-outline/2017/07/10/boarding-school-flex
As I said the article is kinda simple but the discussions in the comments are really interesting, a fairly long read.
I have nothing to do with sellnet, just thought you guys might find it interesting.
Basics
Seek outside that box…
I know you love your flex discussions matty. But read the comments, a bit of non-box thinking in there…
I think you could do worse than to read up on what Jim Richardson has been doing over the years with flex engineering. After checking out one of the boards he made I’m convinced he knows what he’s doing. I think USBlanks is on to something with their Incide blanks developed by Dan Mann. Both types rely on something like a torsion box internal structure that can stiffen the board exactly where it is designed to be stiff and flex where it is designed to flex…
http://www.surflight.com/Surflight/Technology.html
http://usblanks.com/catalog/incide/
Just saying
I have spent some time and money…
Since a stuck my nose in again.
That’s 05; I have been on the flex quest.
The idea of flex and more importantly REBOUND, have always intrigued me.
So my experience is the last 12 years of this search.
Parabolic stringers, Fiber details with the failures and success.
I’m guilty, I have not tried INCIDE.
If it worked, we would ALL be over it.
Please forgive me brothers.
Just a few photo’s
I have found, there are limits…
Just my muddled old mind.
https://swaylocks7stage.s3.us-east-2.amazonaws.com/s3fs-public/Dustin%20#1%20deck.jpg
I only read article, seems to be the “surfing” consensus : lot of approximation that create the new theory of composit sandwich mechanic. A chance most composit parts engineer are not surfer LOL.
What i don’t understand is that sandwich composits mechanic is really well known, scientifically established, why people need to invent the wheel again.
I don’t know if it’s because I started surfing when boards were glassed heavy and were stiff or just the way I surf, but I prefer stiffer surfboards. I like a board that feels really solid when I push it into a hard turn. I think younger surfers that have been riding lightly glassed boards all their lives have been so used to a flexing board that they know how to use that to their advantage. I buckled most of the boards I’ve had with more flex, usually on an air drop.
I have ridden my share of air mats, and I love the way you can bend, or squeeze an air mat and get it to perform better as a wave changes.
Brilliant
sharkcountry!
“I have ridden my share of air mats, and I love the way you can bend, or squeeze an air mat and get it to perform better as a wave changes.”
Maybe it is the beer.
But I can envision the future
Reactive foam (or something)…
Which always contorts to the perfect shape.
Mahalo,
I love visions…
I am a flex supplicant. However, the article linked above only discusses standard generalities.
Within the context of the article’s discussion, traditional surfboard “foil” (which was not mentioned) and stringerless would have noticeable effects on flex.
There are some additonal, fairly simple ways to change flex beyond the discussion of the article.
From my perspective, tail flex is of greatest interest.
Apparently torsional stiffness and “twist” are not synonymous:
http://www.carbonsugar.com/design/everything-you-should-know-about-fw-fins/
George Gall (PlusOne) has some good insights on flex – worthy of a read:
(last half of first link and first half of the second link):
http://www.swaylocks.com/comment/497273#comment-497273
http://www.swaylocks.com/comment/497387#comment-497387
