Windfoil Foil sizes ?

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

And that is exactly why we can never let engineers run the world.
Everyone knows Hawaiin wind powers your sail more than Lake Tahoe winds.
Except engineers.

windward1 · Joined: 18 Jun 2000 Posts: 1400

dlee,
Tahoe is at a mite higher elevation than the ocean surrounding Hawaii....

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

Yeah, my bad.
Worse, most dry wind is on fresh water.
But maybe Santa Ana winds pack less punch than fog winds.

PeterSS · Joined: 05 Feb 2009 Posts: 51

I stumbled across some Pacific NW forum - and these guys all seem to like the Slingshot 76 and 84 Wings..But they seem to use bigger sails..I guess the wind seems very gusty or fickle there? I was going to use the 76 or 84 with my newer 4.6 and 6.0 Sails.. I have an old Retro 7.5 - but that requires the bigger mast, and is much heavier...at my 170lbs..will my Hover122 + 84 wing + 4.6 - 6.0 sails be sufficient to get pumped onto a plane in marginal winds? And yes the hot air is less dense - making the sail less efficient - like a plane taking off at a hot / high airport - requires a loner runway to take off.. The wind here in the summer is Weak, so hoping the bigger Foil under the water helps! Thanks for all the replies thus far.

Gwarn · Joined: 22 May 2013 Posts: 124 Location: SF

Moses w110 review.

https://www.youtube.com/watch?v=qtKMleeqq9o&feature=youtu.be&fbclid=IwAR1tLZJXvYw2Xn0nbPVuGV3bwHv4Ibi6LO8h1EF3vKbMe66iwloIIxXPh9Q

I don't wing

I only foil with a sail and ride the Moses 790 and 679 wings.

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

Might be, a much smaller low drag foil would get you up and going with the same size sail.
Seen some really light wind foiling done on 900 sq high aspect thin foils.

NOVAAN · Joined: 28 Sep 1994 Posts: 1551

There is a point of no return for a big investment. Some times it cheaper to go play golf...That said I go out all the time in winds that I can't get going and have a lot of fun just messin around. Any day on the water is a good day

cgoudie1 · Posted: Sat Mar 28, 2020 5:29 pm Post subject:

As an Engineer, I can say that wet air is almost always less dense than dry air so dry air should pack more of a punch. It's just physics (or meteorology)

-Craig

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

Once again, did you..engineer...think this thru?
Wet air gots h20, which is heavier than pure dry air.
At the same 10 knots, which moves your sail more?
Not talking theory here, just effect in the real world.

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

Engineers talk theory.
Maybe THEIR definition of dense means more air molecules.
More air does not pack the punch of added WATER.