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Forum: Ask Our Team 23rd December 2010, 07:59 PM
Replies: 0
Views: 855
Posted By andretsin
Twin fins help early planning?

I was wandering if placing fins just below the rails would help to keep the flow under the board, not leting it escape to sides. Because all the flow which escape to sides don't contribute to lift...
Forum: Ask Our Team 12th May 2009, 11:53 PM
Replies: 4
Views: 1,898
Posted By andretsin
As you can see, I'm not Tiesda. But I would like...

As you can see, I'm not Tiesda. But I would like to give you my point of view.
Considering that the only variable is the board, as you start to point upper and upper, your speed decreeses and then...
Forum: Free Forum 12th May 2009, 11:39 PM
Replies: 21
Views: 4,129
Posted By andretsin
I'm lucky and I live next to a wave sailing spot....

I'm lucky and I live next to a wave sailing spot. So, of course, my favorite is wavesailing. But I have to tell you that I also like longboarding in any condition. I practise it every weekend if...
Forum: Free Forum 21st April 2009, 05:05 PM
Replies: 14
Views: 6,885
Posted By andretsin
Hello, I would like to tell you some of the...

Hello,
I would like to tell you some of the theoric characteristhics of profiles:
1-Concave profile: This is the common one of sails, the single skin profile. Is the one which gets the biggest...
Forum: Ask Our Team 9th February 2009, 02:31 PM
Replies: 11
Views: 4,763
Posted By andretsin
Hello, as i said, i have phantom 380 from 2008....

Hello, as i said, i have phantom 380 from 2008. I'm almost sure is a problem of the rubbers, not the box itself. Maybe is because the gasket was tested in Thailand, where the water i guess is arround...
Forum: Spanish Forum 30th January 2009, 02:35 PM
Replies: 3
Views: 2,548
Posted By andretsin
Hola, yo he navegado con esa misma vela. La probé...

Hola, yo he navegado con esa misma vela. La probé solo un día de viento fuerte, así que la tensé de abajo tanto como pude. Por más que tensaba, la bolsa a la altura de la botavara no desaparecía (ni tensando de...
Forum: Ask Our Team 29th January 2009, 06:00 PM
Replies: 11
Views: 4,763
Posted By andretsin
Hello, I'm not from the team, but i'm here...

Hello,
I'm not from the team, but i'm here already 2 months and the team seem to be disapeared so i'm going to try to help you. I have phantom race 380 from 2008. My daggerboard is also very hard to...
Forum: Ask Our Team 22nd January 2009, 03:50 PM
Replies: 0
Views: 1,225
Posted By andretsin
Where is the team?

Hi!
I'm writing in this forum since begining of december but during all this time I didn't see any post from Ian Fox, Tiesda You and Remi (who just wrote today). Well, I said only these people...
Forum: Ask Our Team 12th January 2009, 03:16 PM
Replies: 24
Views: 4,696
Posted By andretsin
Floyd, everything i wrote was to say that you...

Floyd,
everything i wrote was to say that you reduce drag with cutouts because you reduce wetted area. Other boats don't use cutouts because they just don't have more wetted surface than needed. For...
Forum: Ask Our Team 9th January 2009, 11:39 PM
Replies: 24
Views: 4,696
Posted By andretsin
Ok, now i searched in google and found this link:...

Ok, now i searched in google and found this link:
http://www.bluejacketboats.com/planing_boat_theory1.htm
here you can see how the centre of presure is in the front part. I didn't read the text....
Forum: Ask Our Team 9th January 2009, 09:58 PM
Replies: 24
Views: 4,696
Posted By andretsin
To say that a wing and a planing surface work...

To say that a wing and a planing surface work with different principles depends only on how do you call things. If you say that the board works because of momentum exchange of the water and the wing...
Forum: Ask Our Team 9th January 2009, 04:07 AM
Replies: 24
Views: 4,696
Posted By andretsin
Hello everybody, I read someone here saying...

Hello everybody,
I read someone here saying that the planing surface of the board is not working like a lifting shape (wing for example). I would like to find some similar things between the two...
Forum: Ask Our Team 18th December 2008, 04:03 AM
Replies: 21
Views: 7,494
Posted By andretsin
I'm sorry, I'm spanish and i didn't understand...

I'm sorry, I'm spanish and i didn't understand last two comments. What is Weedfin? And when floyd said "fitting of tiny fins(Arranged horizontally) (2cm length 1cm depth at most)" do you mean to put...
Forum: Windsurfing School 16th December 2008, 01:54 AM
Replies: 35
Views: 9,679
Posted By andretsin
Roger, I thought more about this question....

Roger,
I thought more about this question. Well, first of all i wanted to tell you that when i said that i think is the wind which is lifting the board i was meaning the action of the wind directly...
Forum: Ask Our Team 12th December 2008, 08:43 PM
Replies: 21
Views: 7,494
Posted By andretsin
Now i don't have time to read. I'm at work. I...

Now i don't have time to read. I'm at work. I just wanted to ad that foils work at 4-8degrees of atack angle. So with only few change on the board pitch you would put the foil to angle 0 of atack (or...
Forum: Ask Our Team 12th December 2008, 06:47 PM
Replies: 21
Views: 7,494
Posted By andretsin
Do you know how does Trifoiler works? It's...

Do you know how does Trifoiler works?
It's almost the same.
Front two foils controlled by respective skimmers, are keeping constant height in the front (this would be replaced by the front foil of...
Forum: Ask Our Team 12th December 2008, 04:30 PM
Replies: 21
Views: 7,494
Posted By andretsin
I don't know about point b). I think it would be...

I don't know about point b). I think it would be possible to work as I said, but maybe I'm wrong.
But point a) is not like you said. Front foil has shorter leg, so while it is in the surface and the...
Forum: Free Forum 12th December 2008, 03:46 PM
Replies: 18
Views: 4,707
Posted By andretsin
Greg, I agree with anything you said. It was...

Greg, I agree with anything you said. It was great!
I never realised that. The problem is comming from magazines and videos from Hawaii. They showed us that there is only one way. The planning way....
Forum: Ask Our Team 12th December 2008, 03:00 PM
Replies: 21
Views: 7,494
Posted By andretsin
I guess i wrote in discussion about serenity with...

I guess i wrote in discussion about serenity with foils, that what i would do is to put a simple invert "T" foil (in the fin, of course) because i think is the most simple and efective one, and some...
Forum: Windsurfing School 11th December 2008, 05:11 PM
Replies: 35
Views: 9,679
Posted By andretsin
Roger, but i think, when you roll the board,...

Roger,
but i think, when you roll the board, the hull is not producing lift properly, even more, being rolled he is trying to turn downwind, so we have to put the sail more to the back to compensate...
Forum: Ask Our Team 11th December 2008, 04:20 PM
Replies: 21
Views: 7,494
Posted By andretsin
The problem is that power to leeward from the...

The problem is that power to leeward from the sail is also increased to square of the speed. I tryed to calculate once if it's true that you can reduce the size of the fin if you increase your speed...
Forum: Ask Our Team 11th December 2008, 03:41 AM
Replies: 21
Views: 7,494
Posted By andretsin
I think hydropter don't have any kind of height...

I think hydropter don't have any kind of height control. It uses the piercing foils which work for lift and daggerboard at the same time. This ones are autoregulating (when the speed grows the foil...
Forum: Free Forum 10th December 2008, 06:33 PM
Replies: 47
Views: 12,850
Posted By andretsin
Hi, there are two radical different concepts...

Hi,
there are two radical different concepts mixed here. The twist in the upper part of the sail has a bigger purpose than that one of giving control in gusts. That part of the sail work like the...
Forum: Free Forum 10th December 2008, 05:35 PM
Replies: 15
Views: 5,050
Posted By andretsin
I see i didn't explain it well enough. I mean...

I see i didn't explain it well enough. I mean that:
-In low winds (so low that is not possible to take off in hydrofoils and neigther planning in planning boards), hydrofoiled serenity would be...
Forum: Ask Our Team 10th December 2008, 05:08 PM
Replies: 21
Views: 7,494
Posted By andretsin
Hi, it seems that today I'm rediscovring all the...

Hi, it seems that today I'm rediscovring all the old posts...
Are you still there, LukasV?
I'm not from the starboard team (althought i would like to), but i will try to answer you anyway.
Main...
Showing results 1 to 25 of 28

 
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