August 19th, 2010
till the end of the year 2000 .... I was convinced > the vfp was my ultimate boat !
I liked every thing about it > the long water line > the changing directions >
the safety of the fin ....
then people started talking about rotational inertia at the proafile
and robert biegler there was showing a way to uncouple the fin from the boat ....
but ... just putting a hinge on the beam ? . I didnt think this would be a practical vessel !
so I came up with a tri type of a concept .... you can see at www.proatech.org from 2001 ...
but the hvfp turned out a lot less > all you need >
a small float and a special hinge to have the right angle of attack
on the vector fin at all times !
now we have a boat > easy to trailor > having more effective boa >
so the new rig is 50% higher > 2x the sail area > a deeper fin possible !
and the ride > flying already at very low speeds !
even though there will be trimarans if the water line is limited >
and the float can be much longer as in the americas cup !
or there will always be beach cats ! the traditional proa .... vfp for some !
or if you want to stay in a marina > even a mono !
the hvfp is my new ultimate sailing vessel ! .... and the fact ....
it will take a long time be fore it is perfected > doesnt bother me that much ....
some thing being totally wrong with this planet ... I have known since I was 3 ....
but since about 1999 > the age of stupid < is really bothering me ... I dont mean the movie !
so finding a way for wisdom to come upon this planet .... is taking most of my time now ...
Mai 31st, 2010
video direct link >>> www.proadesign.de/100_0151a.mov
and with a qt player you can see it in slow motion at >>> www.proadesign.de/100_0151z.mov
Januar 22nd, 2010
more on this …. at
Januar 6th, 2010
März 8th, 2009
……. this blog will show the new developments of proadesign !
meaning mostly ….. the new hvfp >
if we develop a new concept …… it has to be some times radically new !
meaning > all new > not only a modification of the old > meaning just to take the vfp as a basis !
so ….. we will not just take a vfp …. put a hinge on the bridge deck !
but we put a minimum wetted surface float on > where the vf was >
then we need to have a flexible connection to the hvf >
so the fin has always an angle of attack !
even if the the rest of the boat is being pushed to ww from the wave current …
or if the main hull is heeled to leeward …
and this heeling is causing the bow to come up !
meaning the hvf would have a negative aoa ……..
then we need to have a minimum resistance hvf >
since ….. we dont want any more resistance to wind ward then neccessary
or we will need too much sail in front to balance …..
and we would have more over all resistance !