Contact   Imprint   Advertising   Guidelines

Pumping foil section/airfoil?

Here you can exchange your experience and datas about your home build boards
jaros
Very Frequent Poster
Posts: 523
Joined: Sun Dec 15, 2002 1:00 am
Brand Affiliation: None
Location: Slovenia
Has thanked: 20 times
Been thanked: 12 times

Pumping foil section/airfoil?

Postby jaros » Sat Apr 25, 2020 6:14 am

Hi,
Does anybody know what kind of airfoil is used on a current day pumping surf foil?
Thanx!

nixmatters
Frequent Poster
Posts: 355
Joined: Sun Jun 12, 2016 12:38 pm
Kiting since: 2009
Style: freeride. started foiling, not there yet
Gear: mostly custom made
Brand Affiliation: None currently
Has thanked: 131 times
Been thanked: 69 times

Re: Pumping foil section/airfoil?

Postby nixmatters » Sun Jul 12, 2020 8:25 pm

I was just about to post a similar query, but had the patience to scroll through the search results till I ended up here.

Jaros, have you found any helpful info meanwhile? Thanks!

jaros
Very Frequent Poster
Posts: 523
Joined: Sun Dec 15, 2002 1:00 am
Brand Affiliation: None
Location: Slovenia
Has thanked: 20 times
Been thanked: 12 times

Re: Pumping foil section/airfoil?

Postby jaros » Sun Jul 12, 2020 9:19 pm

No, nothing. Sorry. Still interested...

fluidity
Frequent Poster
Posts: 206
Joined: Sat Mar 19, 2016 11:20 pm
Local Beach: Ngati Toa, Plimmerton, Titahi Bay, Waikanae, Petone, Seatoun, Lyall Bay, Eastbourne, Lake Wairarapa
Style: Wave, jump
Gear: Old Flexfoil 9, Switch Element V4 11m, Ocean Rodeo Prodigy 7m 2014, Nitro14m v6, Nitro9m v6 12mSwitch Legacy2
DIY CAD ultra-concave wave twintips 1500 and 130mm with my own fin designs. Easy upwind, awesome carving. Switch Nitro 10m V7, Naish 5.3m Wing. Building my own foils from my CAD design and 3D prints.
Has thanked: 11 times
Been thanked: 7 times

Re: Pumping foil section/airfoil?

Postby fluidity » Mon Jul 13, 2020 6:32 am

Jaros, There's a Gong video on line somewhere explaining regular pumping and some gull wing shaped new foil the designer says pumps better side to side(think ripstick or sketeboard)
He says that thin foils need slower pumping over more distance than thicker foils.
I think most of the foils are pretty traditional in having a longer curvier surface at the top. I designed one and I'm cladding the front and back wings at the moment after 3D printing. I suspect it's going to behave about as well as any other foil wing out there with matching aspect ratio and chord. It's all about pressure differential caused by faster flow over the top. This will be my first :-)


Return to “Gear Builders”

Who is online

Users browsing this forum: No registered users and 2 guests