Contact   Imprint   Advertising   Guidelines

Speed Record for hydrofoiling ?

A forum dedicated to Hydrofoil riders
User avatar
SparD
Frequent Poster
Posts: 229
Joined: Tue Jul 02, 2013 9:47 pm
Kiting since: 2011
Local Beach: Almanarre
Gear: Foil kites : Ozone R1V3
Tube kites : Ocean Rodeo Flite
Hydrofoil : Moses Comet
Brand Affiliation: Moses Hydrofoil
Ocean Rodeo
Location: Hyères, France
Has thanked: 0
Been thanked: 3 times

Re: Speed Record for hydrofoiling ?

Postby SparD » Fri Jun 07, 2019 9:10 am

These are my personnal bests this year.
STL_Personnal_Bests_2019.png
I'm just a weekend warrior participating in a few races each year, it lets you imagine the speeds of the top guys !

queneseb
Medium Poster
Posts: 87
Joined: Tue Jun 17, 2014 1:24 pm
Kiting since: 0
Gear: Peterlynn NOVA
Peterlynn AEROv2
Peterlynn HOOK
Brand Affiliation: Peterlynn
Chubanga
Has thanked: 0
Been thanked: 4 times

Re: Speed Record for hydrofoiling ?

Postby queneseb » Fri Jun 07, 2019 3:43 pm

So slow ! not even in the top 10 at defi kite @Spard

gbrungra
Medium Poster
Posts: 182
Joined: Mon Jul 11, 2016 10:53 pm
Kiting since: 2014
Local Beach: Stinky's, San Diego, CA, USA, and Nantucket, MA, USA
Gear: Griffin 17m TRX 2014, Cabrihna 12m Vector 2014, TTs, Camet 160 and SS Hoverglide
Brand Affiliation: None
Has thanked: 2 times
Been thanked: 1 time

Re: Speed Record for hydrofoiling ?

Postby gbrungra » Sat Jun 08, 2019 4:28 am

We should not expect the highest speed to come from a course race. Would be from a dedicated setup. Smaller foil. One which is barely able to get up on foil, and only starts to be comfortable at 30+ knots. And is designed specifically to limit ventilation and cavitation.

I’m thinking a canted strut (mast). Going from the tail of the board, forward to the leading edge of the front foil. It would not be light o stiff, but it would help prevent ventilation from traveling down the mast from the surface...

User avatar
SparD
Frequent Poster
Posts: 229
Joined: Tue Jul 02, 2013 9:47 pm
Kiting since: 2011
Local Beach: Almanarre
Gear: Foil kites : Ozone R1V3
Tube kites : Ocean Rodeo Flite
Hydrofoil : Moses Comet
Brand Affiliation: Moses Hydrofoil
Ocean Rodeo
Location: Hyères, France
Has thanked: 0
Been thanked: 3 times

Re: Speed Record for hydrofoiling ?

Postby SparD » Sat Jun 08, 2019 4:30 am

queneseb wrote:
Fri Jun 07, 2019 3:43 pm
So slow ! not even in the top 10 at defi kite @Spard
Please post yours ;)

Whattheflock
Medium Poster
Posts: 74
Joined: Sun Jul 29, 2012 6:23 pm
Local Beach: Wasaga
Brand Affiliation: None
Has thanked: 0
Been thanked: 5 times

Re: Speed Record for hydrofoiling ?

Postby Whattheflock » Sun Jun 30, 2019 2:09 am

I watch my GPS watch, hit 32kmh or 17knots today on my spaceskate wing in overpowered conditions. So quick. /s

StillLovinIt
Rare Poster
Posts: 23
Joined: Wed Sep 27, 2017 7:11 am
Kiting since: 2003
Local Beach: NorCal
Gear: multiple brands
Brand Affiliation: None
Has thanked: 0
Been thanked: 3 times

Re: Speed Record for hydrofoiling ?

Postby StillLovinIt » Sun Jun 30, 2019 7:09 am

Another article about Sailrocket:
https://www.realisedesign.co.uk/product ... ed-record/
Cavitating-Foil.jpg
Cavitating-Foil.jpg (61.21 KiB) Viewed 475 times

StillLovinIt
Rare Poster
Posts: 23
Joined: Wed Sep 27, 2017 7:11 am
Kiting since: 2003
Local Beach: NorCal
Gear: multiple brands
Brand Affiliation: None
Has thanked: 0
Been thanked: 3 times

Re: Speed Record for hydrofoiling ?

Postby StillLovinIt » Sun Jun 30, 2019 7:51 am

BTW, there's also some ongoing research on (super-)cavitating foil sections that have acceptable performance in non-cavitating mode (low speed mode) by adding a tail to the wedge. Looks like a tough read, I just looked at the pictures:
A New Family of Dual-Mode Super-Cavitating Hydrofoils
SCSB Hydrofoil type.png

gbrungra
Medium Poster
Posts: 182
Joined: Mon Jul 11, 2016 10:53 pm
Kiting since: 2014
Local Beach: Stinky's, San Diego, CA, USA, and Nantucket, MA, USA
Gear: Griffin 17m TRX 2014, Cabrihna 12m Vector 2014, TTs, Camet 160 and SS Hoverglide
Brand Affiliation: None
Has thanked: 2 times
Been thanked: 1 time

Re: Speed Record for hydrofoiling ?

Postby gbrungra » Tue Jul 02, 2019 3:19 pm

The fastest motorboats are non-hydrofoil. They skim the surface like a kiting speed board.

Even sail rocket was not fully foiling. 1-2 of its points of contact were skimming, with no foil at all. It only used a foil for lateral grip on the water, not lift. And its lateral grip foil was super-cavitating, meaning the water flow separated around it and did not close up behind it. Sounds very similar to a kiting speed board. A small inclined surface for lateral grip on the water, and the water flow is not closing up behind it.

I don’t think we should look to sail rocket as an indication that kite hydrofoils will ever hold the speed record. Sail rocket is very much like a speed board, but with an additional 2 (non-foiling) points of contact for stability. Like a speed board, but with training wheels.

ronnie
Very Frequent Poster
Posts: 3945
Joined: Sun Jul 24, 2005 6:39 pm
Has thanked: 15 times
Been thanked: 15 times

Re: Speed Record for hydrofoiling ?

Postby ronnie » Wed Jul 03, 2019 10:44 am

gbrungra wrote:
Tue Jul 02, 2019 3:19 pm
The fastest motorboats are non-hydrofoil. They skim the surface like a kiting speed board.

Even sail rocket was not fully foiling. 1-2 of its points of contact were skimming, with no foil at all. It only used a foil for lateral grip on the water, not lift. And its lateral grip foil was super-cavitating, meaning the water flow separated around it and did not close up behind it. Sounds very similar to a kiting speed board. A small inclined surface for lateral grip on the water, and the water flow is not closing up behind it.

I don’t think we should look to sail rocket as an indication that kite hydrofoils will ever hold the speed record. Sail rocket is very much like a speed board, but with an additional 2 (non-foiling) points of contact for stability. Like a speed board, but with training wheels.
The advantage with Sailrocket was that the power was held mostly by the foil. That means you are not limited to the weight of the rider as to how much power you can use. With a pulling foil, the rider can be suspended on the lines from the foil to the kite, with the lines loaded with much more pull than his/her weight.


Return to “Hydrofoil”

Who is online

Users browsing this forum: Google Adsense [Bot] and 4 guests

cron