the vector fin proa plan
plans for the vector fin proa >
as well as the basis of the hinged vector fin proa >
can be looked at >
at ...... http://hvfp.proadesign.com/
you can see the index of the ..... hinged vector fin building notes
the pictures ..... are not there yet >
since the whole thing was originally posted at the yahoo group > proadesign
if you cant wait to have me add the pictures ..... in the future >
you can go to the yahoo group > itself >
http://groups.yahoo.com/group/proadesign/?yguid=289126699
but you need to be a member to get to see the files !
if you are interested in an extensive buildung manual for the vfp ....
as opposed to the short 10 steps included in the vfp plan ....
you can contact >>> wanda elliot > don elliots widow > at .(JavaScript must be enabled to view this email address)
for the vfp25 building manual in pdf ......
proatest ....
as the name says > see .... http://blog.proadesign.com
is a test boat for a 3x bigger one >
already started .... but ???
see .... http://www.proagenesis.org .... the picture >>>> ” in “
actually ...
I never thought of having it at this size for real >
but since it workes so great ....
we even made it available by smallboats don elliot
as a building booklet production ... the shorter > vfp 25 !
since there was the limit of 25’
here is some data on both >
loa 31’ 9.5m loa 93’ 28.5m
boa 12’ 3.6m boa 36’ 11m
hvf +7’ 2.1m + 16’ ~ 5m
total 19’ 5.7m total 52’ 16m
bowl 20” 50cm wl 4’9” 1.5m
bodeck 24” 60cm deck 5’9” 1.8m
draft 10” 25cm draft 30” 75cm
draft hvf ~ 3’ 90cm hvf 7’ 2.1m
mast 20’ 6m height 60’ 18m
the hvf on the 3x will be most likely
of a more compact geo metry ... then on the test proa !
because of the stress expected ... and because we dont need
the scale draft of 9’ on this recreation yacht !
but contrary to a dagger board .... is striking ground >
not that big of a catastrophe with the hinged vector fin >
because the boat doesnt have to come to a hold !
but will just circle around the hvf tip itself !
head room ~ 32” 80cm ~ 6’ 1.8m
up to 42” 105cm ~ 7’ 2.1m
the head room for the proatest is unter the entrance hood
if you plan on useing it as a regular boat >
this could be increased >
by increasing the freeboard of the hull ... some 6” - 10 ” !
and on the 3x up to .... 1’
bunks 2x 7’ 2.1m long up to 12x 8’ ... 2.4m long possible
dsp 800# 350kg dsp 10 ton
the float now is a shorter 12’ loa ... 3.6m loa > 1/2 build of the main hull !
the float of the 3x will be around a 1/3 section >
of the main hull only .... ~ 24’ ... ~ 7m loa
sa main ~ 70f² ~ 6m² sa main ~ 600f² ~ 50m²
roller jib ~ 25f² ~ 2m² roller jib ~ 200f² ~ 20m²
ww sail ~ 25f² ~ 2m² ww sail ~ 200f² ~ 20m²
stay sail ~ 50f² ~ 4m² stay sail ~ 450f² ~ 40m²
sail area is not yet final !
so far .... there is no reefing > but a storm main sail used
used with out the roller jib > just the wind ward sail can be !
the stay sail is on a roller .... too >
but can be made on a halyard as well !
since only used in lite winds ..... when there is time ....
steering through 2x rudder on the side of the main hull
independant control > mostly the rear one used >
the front only on changing directions and emergencies !
through foot sleeves below the cockpit !
through hand lines on the 3x ?
see http://www.proatech.org ... rudders etc for more on this .....
the side the rudders are on >
can be decided as for the use required
right now they are on the wind ward side by proatest >
because on beaching side ways > they are protected then !
and since the vfp had the fin under the float >
it was higher on the wind ward side then ....
on the hvfp now > they may be better on the lee ward ?
since this type heels a lot more more .... when steering may be ??
and it is lower on the wind ward side when beaching ....
you would have to hold them up ....
when sliding side ways onto a beach though !
the side they will be on the 3x could be the opposite as well !
because rudder control is easier > if on the lee ward ....
the steering effect is not that much .... different !
actually we could use 4 rudders > one on each side ......
this project started out as being 61’ loa !
the tiny 1/24 model > 2’6” loa > you can see on
http://www.proatech.org > videos !
then I saw the effects of lenghtening > and it became longer ....
if I had anticipated this > and being all left to myself now >
I may have just made a 2x being 62’ loa 24’ boa dsp unter 3tons
just sitting head room .... more I wouldnt need for myself !
but now all the frames are done > and the center section finished !
so its to late for that ! the shortest it could be made now >
is 72’loa > but the steering is a lot better ... with being longer !
even though at this size > the speed potential will not be reached
that often .... and the waves are much smaler for ....
the big boat !
fritz roth proadesign.com
Hi Fritz
I tried your vector fin on Nixe. I must say I did not really get the right angle at the last part, but it is working. I will change the angle so it is pulling more down and I am shure it is the simplest and best daggerboard for a proa. I just did not mount it at the side hull but at the end of the cockpit, so it its working between the hulls. There it is easier for me to take up and down. Thank you Fritz.
Here you can see it. I did not paint it after glueing so it looks quite rough, but that will be changed after I changed the angle.
http://youtu.be/fWOiF49logI
Liebe Grüsse
Alexander