Contact   Imprint   Advertising   Guidelines

America's Cup: Kite vs two AC75's

A forum dedicated to Hydrofoil riders
User avatar
SimonP
Frequent Poster
Posts: 461
Joined: Thu Aug 09, 2007 4:49 am
Local Beach: Rotorua Lakes, Maketu, NZ
Favorite Beaches: Aotea, Maroochydore, Faro, Aitutaki
Style: Foiling, free-style, waves
Gear: J-shapes foil, Switch kites, Underground twintips, misc surfboards.
Brand Affiliation: None
Location: Bay of Plenty, New Zealand
Has thanked: 0
Been thanked: 17 times

America's Cup: Kite vs two AC75's

Postby SimonP » Fri Aug 21, 2020 5:27 am

Kite foilers go pretty fast, but they are still off the pace compared to an Americas Cup yacht.
https://www.sail-world.com/news/230941/ ... -two-AC75s

User avatar
Peter_Frank
Very Frequent Poster
Posts: 10201
Joined: Wed Oct 16, 2002 1:00 am
Brand Affiliation: None
Location: Denmark
Has thanked: 269 times
Been thanked: 305 times

Re: America's Cup: Kite vs two AC75's

Postby Peter_Frank » Fri Aug 21, 2020 9:38 am

Is it a downwind leg at the last part?

It accelerates like crazy indeed :rollgrin:

8) Peter

Atte
Medium Poster
Posts: 63
Joined: Fri Dec 01, 2006 6:33 pm
Kiting since: 2005
Local Beach: Tablas island , Philippine's.
Style: Freeride
Gear: Flysurfer
Location: Tablas
Has thanked: 21 times
Been thanked: 3 times
Contact:

Re: America's Cup: Kite vs two AC75's

Postby Atte » Fri Aug 21, 2020 11:31 am

Never heard about Nick Reeves and can't tell what gear he is on. One thing is for sure Nick is not competing on a high level in formula kite so if you put him against the top riders it will look about the same as in the video (he will be far behind).

Dave_5280
Very Frequent Poster
Posts: 950
Joined: Thu Nov 29, 2007 1:40 pm
Kiting since: 1997
Weight: 78 kg
Local Beach: Reservoirs in Colorado, U.S.
Favorite Beaches: Kanaha Beach Park, Maui, Hawaii, U.S.
Style: Freeride
Gear: Switchblades, Contras, CF Raptor TT. Ozone Frenzy foil kites with skis. Fixed bridle foil kites on handles with MBS landboard.
Brand Affiliation: Cabrinha, CrazyFly, Ozone, Volkl, Gath, and SeaSpecs.
Location: Denver, Colorado, U.S.
Has thanked: 21 times
Been thanked: 31 times

Re: America's Cup: Kite vs two AC75's

Postby Dave_5280 » Fri Aug 21, 2020 12:08 pm

I think they have said the AC75’s top speed will be 50 knots

User avatar
davesails7
Very Frequent Poster
Posts: 2186
Joined: Sun Apr 01, 2007 7:36 pm
Local Beach: Virginia Beach
Style: Race
Gear: ML B3
R1V2 11m,15m. VMG 18m
OR Mako 130x35
Brand Affiliation: None
Has thanked: 6 times
Been thanked: 14 times

Re: America's Cup: Kite vs two AC75's

Postby davesails7 » Fri Aug 21, 2020 6:12 pm

Atte wrote:
Fri Aug 21, 2020 11:31 am
Never heard about Nick Reeves and can't tell what gear he is on. One thing is for sure Nick is not competing on a high level in formula kite so if you put him against the top riders it will look about the same as in the video (he will be far behind).
Good point, I hadn't thought about that. I'm a mid-fleet racer and I've been lapped by Nico Parlier on a twice around course, so he would definitely do a better job of racing the AC boats :lol:

He seems pretty competent in the video though. He keeps his kite low. Looks like an R1V3 on short lines and carbon bar.

plummet
Very Frequent Poster
Posts: 6643
Joined: Sat Aug 29, 2009 11:25 pm
Local Beach: EE
Favorite Beaches: NZ
Style: Terrain riding
Gear: Old wornout ozone.
Plummet hydrofoil and mutant
Brand Affiliation: None
Has thanked: 7 times
Been thanked: 150 times

Re: America's Cup: Kite vs two AC75's

Postby plummet » Fri Aug 21, 2020 9:37 pm

Warp!

TomW
Very Frequent Poster
Posts: 3502
Joined: Wed Oct 05, 2005 6:43 pm
Kiting since: 2001
Local Beach: Vejbystrand, Lomma
Gear: TW Surfboards hydrofoil board 110
Gong Veloce M, 100cm carbon mast
Ozone Hyperlink V1 7m
Hyperlink V2 9m, 13m
Concept Air Wave 4,5m
Brand Affiliation: None
Location: Sweden
Has thanked: 46 times
Been thanked: 164 times

Re: America's Cup: Kite vs two AC75's

Postby TomW » Fri Aug 21, 2020 11:00 pm

Sick!!

User avatar
edt
Very Frequent Poster
Posts: 5803
Joined: Fri Jul 16, 2010 6:27 am
Kiting since: 2010
Local Beach: Michigan
Gear: slingshot liquid force wainman pansh naish duotone cwb burton ronix ozone cabrinha north flysurfer
Has thanked: 108 times
Been thanked: 133 times

Re: America's Cup: Kite vs two AC75's

Postby edt » Fri Aug 21, 2020 11:56 pm

Specs say top speed is 50 knots but take that with a grain of salt. These multi million dollar boats are not going to be taken any where near to their limits.

In previous America cup races boats are designed basically the same way you design an f1 car. A normal car can drive thousands of miles but an f1 car had to be rebuilt after each race. The reason being they are built right on the edge of weight to power with structural strength at just barely enough to hold it together.

I have a feeling if these sc75s get taken out in 20 to 30 knot wind and pressed to their limits they will just explode in a giant cloud of carbon fiber dust.

I can't help but thinking they are ugly. They look like a frog lifting up first one leg than another. They should have been made as catamarans.

These things are ridiculously fast in light wind. It's possible a kite foil will beat them in 20 knots merely because the ac75 will forfeit if the wind is just a little bit too strong.

The ac75 class is huge weird but really fast.

User avatar
davesails7
Very Frequent Poster
Posts: 2186
Joined: Sun Apr 01, 2007 7:36 pm
Local Beach: Virginia Beach
Style: Race
Gear: ML B3
R1V2 11m,15m. VMG 18m
OR Mako 130x35
Brand Affiliation: None
Has thanked: 6 times
Been thanked: 14 times

Re: America's Cup: Kite vs two AC75's

Postby davesails7 » Sat Aug 22, 2020 2:37 am

edt wrote:
Fri Aug 21, 2020 11:56 pm
These things are ridiculously fast in light wind. It's possible a kite foil will beat them in 20 knots merely because the ac75 will forfeit if the wind is just a little bit too strong.
Why do you think the AC75 would have more of an advantage in light wind? I thought it would be the other way around. Since kiters can choose a huge kite (now 23m and 25m), the wind speed doesn't have much of an effect on speed upwind or downwind. The angles get better as the wind increases, but the speeds are about the same.

Assuming these boats will behave similarly to the boats from the last America's cup. In this video it was blowing 11 knots. https://www.youtube.com/watch?v=DTL3yWwkQM4

The boats were doing about 25-26 knots upwind, but the angle only looks like around 45 deg to the wind. I think top kite racers can do 22-23 knots upwind in these conditions, but at around 30 degrees to the wind. That's about the same VMG.

Downwind they're going 30-32 knots, but the angles are only around 45 degrees from straight downwind. Top kite racers can easily do these speeds, but at deeper angles (around 30-35 deg from straight downwind). Seems like the top kiters would have the advantage downwind in these conditions.

On this race however, it looked windier. The boats were hitting significantly higher speeds and better angles both upwind and downwind. https://www.youtube.com/watch?v=w2QMdKem6lY I'm not as sure the top kite racers could keep up in these conditions.

User avatar
davesails7
Very Frequent Poster
Posts: 2186
Joined: Sun Apr 01, 2007 7:36 pm
Local Beach: Virginia Beach
Style: Race
Gear: ML B3
R1V2 11m,15m. VMG 18m
OR Mako 130x35
Brand Affiliation: None
Has thanked: 6 times
Been thanked: 14 times

Re: America's Cup: Kite vs two AC75's

Postby davesails7 » Sat Aug 22, 2020 2:58 am

edt wrote:
Fri Aug 21, 2020 11:56 pm
I have a feeling if these sc75s get taken out in 20 to 30 knot wind and pressed to their limits they will just explode in a giant cloud of carbon fiber dust.
Looks like there was some disagreement over what the upper limit wind speed would be, but they decided on 23 knots. 6.5 knots for the low end. https://www.sail-world.com/news/226506/ ... s-resolved
These users thanked the author davesails7 for the post:
edt (Sun Aug 23, 2020 2:37 am)
Rating: 8.33%


Return to “Hydrofoil”

Who is online

Users browsing this forum: arjas and 5 guests