Search found 72 matches

by matthias72
12/12/2011, 11:06
Forum: Tecnical Topics
Topic: main sail head
Replies: 2
Views: 1887

Re: main sail head

Our "square" sails are very performing. Every sindicate has different one, it depends on the sails maker. By the way they works using carbon battens flexible and strong. Of course it is not easy to make a efficent square head mainsail and it is not easy to adjust.
by matthias72
03/02/2011, 17:00
Forum: Tecnical Topics
Topic: 4 EASY TESTS TO CHECK YOUR BOAT EFFICIENCY
Replies: 12
Views: 5110

Re: 4 EASY TESTS TO CHECK YOUR BOAT EFFICIENCY

Yes, your boat has all specs to be very very fast. I would be very curious to race vs your boat! ;) ....When?!
by matthias72
03/02/2011, 12:22
Forum: Tecnical Topics
Topic: 4 EASY TESTS TO CHECK YOUR BOAT EFFICIENCY
Replies: 12
Views: 5110

Re: 4 EASY TESTS TO CHECK YOUR BOAT EFFICIENCY

:shock:
Great job Jim! You have a top boat! And the result for the test 1?
by matthias72
10/01/2011, 23:26
Forum: Hull design & Development
Topic: New IACC120 project: Mascalzone Latino ITA-99 by R.Chiesa
Replies: 3
Views: 2943

Re: New IACC120 project: Mascalzone Latino ITA-99 by R.Chiesa

Wellcome on board Jose, the projects are complitely free! ;) You can use alloy tube 12mm diameter for the mainmast, or 10mm diameter carbon tube, or a airfoil mainmast that you can buy form TDmodel here in Italy by mail package. TDmodel sells also all big/little components to make the boats. This is...
by matthias72
14/12/2010, 23:46
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

I wait with interest your tests in water!
by matthias72
14/12/2010, 17:14
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

Nice Idea. Probably in perfect wind condition and stationary water, the hull could decrease its wet surfice, but it depends on boat weight, and speed; as told by Alan a IACC120 is much more heavy respect a hydrofoil boat and the foil surface is small, so I don't know how much the decreasing of wet s...
by matthias72
13/12/2010, 14:09
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

ah, yes, this shape is very dangerous, you have to use a 3° of angle to avoid this problem. But you risk to increase a lot the resistence. I never tested this kind of shape so mine are only ideas. For sure the bulb center mass could be lower may be also 10mm, that is a lot but we have to check if th...
by matthias72
13/12/2010, 13:13
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

Exactly! But not if you sail in light airs!! ;)
by matthias72
13/12/2010, 13:01
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

Hi Alan, this is a hard question. Sailing upwind, It depends on wind intensity. If hard, it is sufficent to push to the LWL max boat speed at the same, also if the boat is more heavy and it moves a major water quantity. On the same time the major bulb weight allows a better performance so at the end...
by matthias72
13/12/2010, 11:58
Forum: Skippers
Topic: Anybody out there!
Replies: 138
Views: 40413

Re: Anybody out there!

The 40mm flexion may be due to the 3200g bulb weight, out of class rules?

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