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Please excuse my ignorance, but...

How better (rough percentage) will the multihulls perform compared to single hulls?

sboardcrazy said...

Wouldnt it be nice to be able to get going that well in those sorts of breezes?

You can.........................you just need a long mast, big boom, 20square metre sail and a really big weight jacket and you'll be planing in no time.

PS - notice how the rudders are very much like a slalom fin in profile (just slightly bigger)

Impressive but!!!! Isn't America,s Cup match racing? This will be drag racing.

A little birdy told me that Alinghi will be embarassed very quickly once they start racing. Only a couple of days to wait to see how true this is.

After all the years of legal battles about location, boat type etc, I am so stoked that this is about to happen! Nothing like getting 2 billionaires - Ernesto Bertarelli, Swiss entrepreneur, former owner of biotech giant Serono VERSUS CEO and founder of ORACLE Corporation Larry Ellison duke it out for the cup and throw some serious dollars into the effort.

what global financial crisis?

This is going to be AWESOME (if they hold together)

mr love said...

Impressive but!!!! Isn't America,s Cup match racing? This will be drag racing.

got that right mr. love..am all for technology but a cat and a tri!i wonder what the milling would be like before the start they'd be at least 50mtrs away to avoid collisions

^^ strongly disagree there

the hydro fin on the big board was a joke but seriously there aren't too many boats that can beat a windsurfer around a course. it will be interesting to see the data from the races. a top of the line formula setup only costs around 10-15K and that makes the american cup boats look like a massive waste.



i know from my own experiences cats and trimarans just can't go upwind as high or fast.

Gestalt said...

^^ strongly disagree there

the hydro fin on the big board was a joke but seriously there aren't too many boats that can beat a windsurfer around a course. it will be interesting to see the data from the races. a top of the line formula setup only costs around 10-15K and that makes the american cup boats look like a massive waste.

You taking the piss? Have you any idea of the sort of VMG these boats pull compared to a windsurfer in the windspeeds they are racing at (<20kts)? Like swoosh said, not even in the same time zone mate. BOR90 can do 26kts in 9kts of wind, a formula board is maybe just planing.

mate, i've taken on 18 footers at the lake and they can't match a formula board.

as for big tri's, go down to redland bay next time the winds 10-15 and watch the twin masted tri cruising around, dragged that off a few years back also .

you need to sail formula more.

even overseas the uk guys (guy cribb and mates) took on a 40' cat on slalom gear and beat it, trimarans have taken on formula kit and lost

can you point me to where the data is about 20 knots upwind and at what angle?

because i can guarantee you that a cat or a tri is not fast at tight angles to windward and has to foot. don't look at the apparent wind data, look at the true wind data. if these boats can point higher than a traditional mono as is being suggested then they truely have defied physics.

time will tell i guess once the data comes out.

here is what a formula board can do.

<10 knots = 60-65 deg
>10 knots = 55 deg
>20 knots = 49 deg

All these angles are usually at around 15-16 knots boardspeed

Gestie you would get hosed by an experienced 18 footer crew, not some folk trying to get it all together.

Maybe you should put your money where your mouth is, but it is easier to sit behind a keyboard and preach about how fast you are

& just to clarify swoosh formula will plane in 6 knots, but yer ya pretty much right with the rest.

Gestalt said...

mate, i've taken on 18 footers at the lake and they can't match a formula board.

as for big tri's, go down to redland bay next time the winds 10-15 and watch the twin masted tri cruising around, dragged that off a few years back also .

you need to sail formula more.

even overseas the uk guys (guy cribb and mates) took on a 40' cat on slalom gear and beat it, trimarans have taken on formula kit and lost

can you point me to where the data is about 20 knots upwind and at what angle?

because i can guarantee you that a cat or a tri is not fast at tight angles to windward and has to foot. don't look at the apparent wind data, look at the true wind data. if these boats can point higher than a traditional mono as is being suggested then they truely have defied physics.

time will tell i guess once the data comes out.

here is what a formula board can do.

<10 knots = 60-65 deg
>10 knots = 55 deg
>20 knots = 49 deg

All these angles are usually at around 15-16 knots boardspeed

Ok lets look at it. Lets call the windspeed 10kts, you say a formula board does 15kts boardspeed at 55 deg. A bit of trig and that gives us a VMG of 8.6kts. Now lets go to the chart on the link you provided. BOR90, 10kts of wind optimum angle 45degrees, VMG 15kts. That's 1.5 times faster. That's if a formula board can actually do 55 deg in 10kts, 15kts boardspeed....which I doubt.

Lets look at downwind. What's a formula board do downwind in 14kts? 23kts boardspeed maybe? and an angle of 135ish Deg (17kts VMG)? Well BOR90 does 26kts VMG in 14kts at an angle of 145 degrees(about 33kts boatspeed...14kts).

There are no two ways about it there is no way any other sailing craft in the world would get close to these boats. There's a reason the race course is 39miles long. Have you ever seen a 39mile formula course that's not a downwinder?


Edit: double quoted

ok, cjw,

i'll humbly accept defeat, you have proven it solidly, good use of maths there.

you other guys are all hot air, money where your mouth is, can do 20 knots upwind....lol

CJW said...

Gestalt said...

mate, i've taken on 18 footers at the lake and they can't match a formula board.

as for big tri's, go down to redland bay next time the winds 10-15 and watch the twin masted tri cruising around, dragged that off a few years back also .

you need to sail formula more.

even overseas the uk guys (guy cribb and mates) took on a 40' cat on slalom gear and beat it, trimarans have taken on formula kit and lost

can you point me to where the data is about 20 knots upwind and at what angle?

because i can guarantee you that a cat or a tri is not fast at tight angles to windward and has to foot. don't look at the apparent wind data, look at the true wind data. if these boats can point higher than a traditional mono as is being suggested then they truely have defied physics.

time will tell i guess once the data comes out.

here is what a formula board can do.

<10 knots = 60-65 deg
>10 knots = 55 deg
>20 knots = 49 deg

All these angles are usually at around 15-16 knots boardspeed

Ok lets look at it. Lets call the windspeed 10kts, you say a formula board does 15kts boardspeed at 55 deg. A bit of trig and that gives us a VMG of 8.6kts. Now lets go to the chart on the link you provided. BOR90, 10kts of wind optimum angle 45degrees, VMG 15kts. That's 1.5 times faster. That's if a formula board can actually do 55 deg in 10kts, 15kts boardspeed....which I doubt.

Lets look at downwind. What's a formula board do downwind in 14kts? 23kts boardspeed maybe? and an angle of 135ish Deg (17kts VMG)? Well BOR90 does 26kts VMG in 14kts at an angle of 145 degrees(about 33kts boatspeed...14kts).

There are no two ways about it there is no way any other sailing craft in the world would get close to these boats. There's a reason the race course is 39miles long. Have you ever seen a 39mile formula course that's not a downwinder?


Edit: double quoted

Gestalt said...
p.s. swoosh, the formula figures are not vmg and the bor90 speeds are vmg,

whooops my bad, but if its VMG then bor90 is so much faster its not even near close.

also, formula can plane in 6kts? dang maybe i need to steal some formula kit

nothing like a good debate to really get a thread moving eh

mkseven said...

Gestie stop talking s***. I do see you sail occasionally, when you not talking garbage on the beach but you never come out to play on your amazing slalom board. You're always blasting on a freestyle/wave/freeride board attempting vulcan's and re-entry's off the lip... in the bay

haha, that's cause i saw the light mate!

so what are you having a go at here, is it me, or is it my boards, or both maybe.
maybe next it will be the sails i use or even the fins i choose.

^^^^^^^^^ Did I miss something? Hey I was thinking....do you reckon a sailboard would beat these boats racing? (just stirring )

Racing cancelled for the day due to light wind - I guess they couldn't point it upwind (just stirring again)

Rescheduled to Wednesday.

PS - didn't realise both these boats pump water into hulls for ballast when going upwind (at what angle they can sail into the wind I'm not sure - and again) and dump it for downwind or broader reaching.