Contact   Imprint   Advertising   Guidelines

Foil directly under mast??

A forum dedicated to Hydrofoil riders
tahoedirk
Frequent Poster
Posts: 219
Joined: Sun Aug 31, 2014 5:02 pm
Local Beach: Kings beach, CA
Favorite Beaches: All clean beaches
Style: out of control
Gear: Homemade gear
Brand Affiliation: None
Has thanked: 0
Been thanked: 1 time

Foil directly under mast??

Postby tahoedirk » Fri Dec 19, 2014 2:02 am

If the trend is moving the front foil closer and closer to the keel/mast, for stiffness, then why doesn't anyone place it directly underneath , or do they?

It seems like the mounting bolts for the foil could easily double as the mounting bolts for the fuselage.

Although I love the rigidity of my one piece fuse/mast design, I would really love the convenience of a KBHF that disassembles.

Any thoughts....

IanNJ
Frequent Poster
Posts: 395
Joined: Thu Jun 05, 2014 2:27 am
Local Beach: Brigantine NJ
Favorite Beaches: Brigantine, LBI, Kite Island NJ, Caberate, Hatteras
Style: Wave/freestyle
Gear: Currently rocking a 12/10/8 CORE GTS3 for waves and wake. Cabrinha Velocity 13/10/7 for Foil.
Boards: LF 139 Element with LFK boots and no fins, SlingShot/MHL NF2 Strapless Foil, CORE Ripper 2 5'10", Cabrinha Secrete weapon 5'10", Slingshot 5'6" Angry Swallow
Brand Affiliation: www.NewJerseyKiteboarding.com and www.GreenHatKiteboarding.com
Location: Jersey Shore!!
Has thanked: 0
Been thanked: 0
Contact:

Re: Foil directly under mast??

Postby IanNJ » Fri Dec 19, 2014 2:14 am

The LF foil comes apart and has a carring case.

User avatar
davesails7
Very Frequent Poster
Posts: 2220
Joined: Sun Apr 01, 2007 7:36 pm
Kiting since: 2006
Weight: 75 kg
Local Beach: Virginia Beach
Style: Race
Gear: ML B3
R1V2 11. VMG 13, 15, 18
OR Mako 130x35
Brand Affiliation: None
Has thanked: 10 times
Been thanked: 22 times

Re: Foil directly under mast??

Postby davesails7 » Fri Dec 19, 2014 4:09 am

That is how all the sailboats have the foils, the single foil is directly below the mast.

There was a video posted a while back about cavitation of a T foil with a single foil directly under a mast. Cavitation is from low pressure. There is a low pressure area above the foil and low pressure area behind the mast. Cavitation in that video was starting where those areas intersected.

Found the video. Go to 3:10:

dwaynej
Medium Poster
Posts: 179
Joined: Tue Sep 03, 2013 8:26 am
Gear: Kites
Brand Affiliation: None
Location: USA
Has thanked: 0
Been thanked: 0

Re: Foil directly under mast??

Postby dwaynej » Fri Dec 19, 2014 4:44 am

davesails7 wrote:That is how all the sailboats have the foils, the single foil is directly below the mast....
Awesome video!

Europ2
Frequent Poster
Posts: 473
Joined: Wed Mar 01, 2006 7:51 pm
Brand Affiliation: None
Has thanked: 14 times
Been thanked: 7 times

Re: Foil directly under mast??

Postby Europ2 » Fri Dec 19, 2014 11:43 am

Yes it has been tested.
MastAboveFWing_0.jpg
MastAboveFWing_0.jpg (59.88 KiB) Viewed 1927 times
Credit Santifont from Girona, Spain.

His conclusions were: doesn't work well, impossible to jibe, the mast must be behind the Wing center of lift.

tahoedirk
Frequent Poster
Posts: 219
Joined: Sun Aug 31, 2014 5:02 pm
Local Beach: Kings beach, CA
Favorite Beaches: All clean beaches
Style: out of control
Gear: Homemade gear
Brand Affiliation: None
Has thanked: 0
Been thanked: 1 time

Re: Foil directly under mast??

Postby tahoedirk » Fri Dec 19, 2014 5:15 pm

Hmmm, that's some video , thanks. I had to take a break to let my brain equalize. Cool picture from Spain, not sure if I learned anything yet.
Amazing how old foil technology really is.


Return to “Hydrofoil”

Who is online

Users browsing this forum: No registered users and 62 guests