/images/misc/forum-image-missing.gif

Looks like something from the 90's..

Just like the original NP RAF speed

evo5 formula proto sail it seems, trimmed on the leech to make it narrower

5 cams....

Select to expand quote

MattL said..
Just like the original NP RAF speed

I had a 5.4 RAF speed. Wonder if I was fast? Sailed on a WindAction board. Still got the board too, man cave art.
I put he sail on consignment and forgot about it. Oops!

Would make a nice Raceboard sail...

9 battens

5cams!

Must have a lot of low end grunt. Look at the clew.

Does anybody know the size? Looks big.

It is an old formula sail 12.5 meters cut to be about 9m. Many Pryde riders experiment with formula sails cut narrow. I saw an old Gastra Vapor cut too. Super high aspect. Go figure...

2019 gun sails for slalom and foil

Nico talks about his cut down 12m Starts at 4:43

?t=4m43s

A bit different from the 5.6 waves sails we were riding last season.

Select to expand quote

BEACHSTART said..

Foil has less drag then normal wsurf(at lower speed range) ,this allow you to use higher COP in high aspect ratio sail,which has better L/D ratio.

In theory,if drag is zero you can hold infinity power of sail,becuse there is nothing to resist to this huge sail power.

example
car pull you with rope when you are on skateboard :
a)if you are on ice,then drag is low and tension in rope (your thrust)will be very low too,you can move above 100km/h easy..
b)if you are on sand,drag is huge,tension in rope will be huge too,maybe you can hold up to 20km/h because you can not hold so much power with your weight which resist to tension in rope...

(in both situation max power/tension in rope which you can hold is the same,it depends only on your weight but when you reach this max rope tension(your thrust) on ice you go very fast and on sand maybe only 20km/h...)


NP preparing new radical high aspect ratio foil sail for 2019.
he cut formula sail to test(6:40)

Select to expand quote

TurnBackTime said..

BEACHSTART said..

Foil has less drag then normal wsurf(at lower speed range) ,this allow you to use higher COP in high aspect ratio sail,which has better L/D ratio.

In theory,if drag is zero you can hold infinity power of sail,becuse there is nothing to resist to this huge sail power.

example
car pull you with rope when you are on skateboard :
a)if you are on ice,then drag is low and tension in rope (your thrust)will be very low too,you can move above 100km/h easy..
b)if you are on sand,drag is huge,tension in rope will be huge too,maybe you can hold up to 20km/h because you can not hold so much power with your weight which resist to tension in rope...

(in both situation max power/tension in rope which you can hold is the same,it depends only on your weight but when you reach this max rope tension(your thrust) on ice you go very fast and on sand maybe only 20km/h...)


NP preparing new radical high aspect ratio foil sail for 2019.
he cut formula sail to test(6:40)

Hotsails has been building a foil sail like this for several years already...

Select to expand quote

gorgesailor said..

Hotsails has been building a foil sail like this for several years already...

The boom angle is a bit odd.http://www.hotsailsmaui.com/forum/viewtopic.php?id=4095 Looks like it might make for an interesting raceboard sail Always love the stuff he does. When I win the lottery, I'm getting a quiver of Superfreaks just because.