New High Performance Monofoilers

[beezt3]

Firstly, I'm associated with the R Class squadron.

Originally Posted by Chris Ostlind

Spectacular... I think not.

This image shows three boats tooling along, trying to get up and maintain a foiling condition with different rigs. Not really a big deal.

Both of the boats following the foiling boat would struggle to foil in any conditions as neither is equipped with hydrofoils. One of them has a set mostly built and the other will likely build a set over winter.

From the image, I'd have to say that the conditions were less than optimal and the functional relationship of this shot to anything of the so-called, spectacular, variety is purely interpretive. Perhaps you find it of the wowee variety. That's your call to make. I do not.

The conditions were fine for foiling.

The pictures are from this years sprint series. The races are spectator friendly and usually commentated. They are run on a short course set close along a rock wall. Races are back to back and last 5-10 minutes with 7-10 boats per race. The three boats in the picture have just done a short beat, rounded the top mark, just out of frame, hoisted kites and will shortly gybe to avoid the rocks, they will then likely execute 2 more gybes and drop their kites before the bottom mark. From top to bottom mark is under 2 minutes. 7-10 boats on a short course means there's a lot more going on than photo or video can capture, so like many things, being there is better.

The R Class has run sprints as part of most National championships since 1994 and runs others during the season. The events are a favourite with spectators and the clubs. They never fail to draw an appreciative and vocal crowd. As far as spectator friendly sailing events go its a pretty good format. The crowd can see into the boats and hear (often too clearly) the sailors. Feedback is always positive and often effusive. The foilers at the two sprints so far this season have added even more interest to an already popular event.

[PI Design]

I think they look great - but R Class always have. This maybe a silly question, but did the foilers win? There is at least one photo upwind where the foiler is behind, but that could be just after the start.
How do the foil sizes/sections compare with the latest Moths?

[beezt3]

Originally Posted by PI Design

I think they look great - but R Class always have.

Cheers

This maybe a silly question, but did the foilers win?

Its not a silly question. Starts with foiling and non foiling boats are tricky. The start line isn't that long and the shore is at the pin end, so you have to tack fairly soon after starting. The foiling boats were pretty conservative on starts. The foilers are less manourverable in close quarters racing and with such a short beat don't get so much time to use their speed to advantage. A good start, good tactics and boat handling really come to the fore in the sprints. There's not a lot of time between manouevers.

The foiler with the blue kite won 4 out of 5 sprint races.

There is at least one photo upwind where the foiler is behind, but that could be just after the start.

The foilers had a few bad starts, plus there were a couple of occasions when other things went wrong. It doesn't take much as the other boats are still quick, especially downwind.

How do the foil sizes/sections compare with the latest Moths?

The R foils are carrying twice the weight of a moth so they're a fair bit bigger. Don't know the latest moth sections or sizes. Sorry not to be much help on that.

[PI Design]

Thanks for that Beezt3. Keepup the good work!

[Doug Lord]

Originally Posted by beezt3

Cheers

Its not a silly question. Starts with foiling and non foiling boats are tricky. The start line isn't that long and the shore is at the pin end, so you have to tack fairly soon after starting. The foiling boats were pretty conservative on starts. The foilers are less manourverable in close quarters racing and with such a short beat don't get so much time to use their speed to advantage. A good start, good tactics and boat handling really come to the fore in the sprints. There's not a lot of time between manouevers.

The foiler with the blue kite won 4 out of 5 sprint races.


The foilers had a few bad starts, plus there were a couple of occasions when other things went wrong. It doesn't take much as the other boats are still quick, especially downwind.

The R foils are carrying twice the weight of a moth so they're a fair bit bigger. Don't know the latest moth sections or sizes. Sorry not to be much help on that.

===================
beezt3, thanks for your insight-very much appreciated. The R Class is surely leading the way in two person skiff design. It would be great at some point when Dan felt comfortable about it-to get some detail on R Class foils-like area ect.
Again, welcome to boatdesign-and thanks!

[Doug Lord]

They've got a new website: www.rs600ff.net

From Simon Hiscocks on Yachts and Yachting Dinghy forum:


* Perfect starter foiler to lead on to the Moth when you have learnt the
art.

* The boat is far from perfect but remember that it costs £4 - 5k for a
competitve package.

* Foiling from the wire is a really cool experience.

* It floats and you can stop and chill.

* It takes a higher crew weight over 70kg up to over 100kg see ardvark
issues comments on weight and foiling.

* The boats are robust and rarely break.

* Many used boat available to add foil package to

* RS parts and service to replace the boat parts.

* One design with a bit more freedom within the boat than the standard
---------
INFO TIDBIT: Minimum class legal boat weight(all up minus crew: 90kg/198lb-carbon boats carry 10kg corrector weights) Updated W/SA with 85kg/187lb crew= 2.75(Moth with same crew=2.94)

[Doug Lord]

Collection of foiler articles: http://www.rclass.org/search?Subject..._order=reverse






Pix- is that foiler really behind??

Click on image:

[Cheesy]

Originally Posted by Doug Lord

Collection of foiler articles: http://www.rclass.org/search?Subject..._order=reverse






Pix- is that foiler really behind??

Click on image:

It sure looks like it.... The boat with the blue kite is a foiler as well, however I have no idea if they were sailing with foils in this race or not

[spudnpea]

to my knowledge the blue kite didnt have foils on and that foiler was behind, a consequence of sprint race course and short beat, 3 tacks in 2 minutes. photo doesn't show the other foiler way out in lead. The rumours are that this coming season there will be 7 foilers in canterbury and 4 in Auckland.

[spudnpea]

side note, hull shapes could be irrelevant, time will tell with 3 L3's, 2 woofs, 1 old Macca, and 1 L4 foiling in Canterbury, and 1 mod L3, Nuplex,1 woof and 1 old Macca in Auckland

[Doug Lord]

Interesting stuff, thanks spud!

[Doug Lord]

This is from the designer of the Decision 35 catamaran-Seb Schmidt-and it is wild, No more info than the renderings below.....

http://www.sebschmidt.ch/portfolio/01197/

[spudnpea]

renderings look cool, but will anyone actually do it, hope so!

[Doug Lord]

I thought this might interest a few people-it appears that it may be some serious development-maybe too many foils??

http://kitefoil.forumactif.net/discu...rd-t199-15.htm



click on image then again on resulting image:

[Cheesy]

Originally Posted by Doug Lord

I thought this might interest a few people-it appears that it may be some serious development-maybe too many foils??

http://kitefoil.forumactif.net/discu...rd-t199-15.htm



click on image then again on resulting image:

Poor surf board!! Kites will have a quite different set of requirements for foiling than a boat...

I had been thinking about building a long skinny board with retractable inclined or curved foils under or just behind the front foot and then either a single or dual vertical foils at the rear of the board (not producing any lift). The course racing boards are so much more efficient upwind with the high aspect ratio fins compared to the twin tip boards