--
   We had to leave the partial
> proa behind - tough!  It has been adopted by a group in Three Rivers which is
> near the Sequoia National Park.

I am very sorry to hear that. It must have been tough. Any chance of giving
it to a good home on the west coast? Or perhaps the group in Three Rivers is
a good home. I would just hate to see it become an outboard powered skiff.

Michael Schacht

"John Dalziel" <johndl@...> wrote
on: Fri, 10 Mar 2000 10:30:10 -0500
>
>Thanks for the translation!
>
>I think we need to separate discussion of the Benze and
>Bolger/AYRS rigs, as they are very different in a number of
>important details:

<cut>

>Also, the Bolger _is_ equipped with a boom, and pivots around the
>forward tack/sheet and the halyard, while the Benze pivots around
>the halyard and the center of the foot. Your analysis of sheeting
>problems does apply to the Benze, but not to the Bolger.

If I understood the drawings of the Benze correctly, it has TWO possible
axes of movement.  One, as John, notes is between the halyard and the
centre pivot point of the lower boom.  The other comes into effect when the
lower boom is locked in place, and is between the halyard and one or other
of the points where the two booms are connected, the other connection being
used as a sheet.  In this mode the sail is very similar to the Bolger (or
to give it its original designation, the AYRS/Morwood semi-elliptical
squaresail, or Mor's'l for short!)

I am not sure what Benze has done to tame the sail (which means I do not
know if he _has_ tamed the sail!)

Simon Fishwick

PS to introduce myself - I have a 15ft proa which has had various rigs -
see http://ourworld.compuserve.com/homepages/Fishwick/proa2.htm
I also have some tenuous connection with AYRS - the Amateur Yacht Research
Society.

The proa I saw at Moss Landing is about thirty feet long and on a side tie
dock at the extreme southern end of Moss landing. If you drive across the
single lane bridge that goes out to where the fisshing warehouses are it will
be on your right. Most people miss it because there is a 90' trimaran
fishing/sailboat that catches your eye. It is truly a monument to Horstman. I
don't know who owns the proa but it could be a smaller Russ Brown design.
Curtis Clark
Scottsdale, Az

>Hello group...My name is Curtis Clark and I live in Scottsdale, Arizona. I am
>an airline pilot flying 737's for a living and am into sport avaition and
>multihulls. I have rebuilt several planes over the years and currently have
>three planes and a sailplane. I just sold this past fall my 25' Nicol
>trimaran that I had owned for 12 years and purchased a like new Montgomery 17
>(yawn) because it made perfect sense. It is boring, boring, boring and slow!
>I have the desire to own a 25' proa that can be trailered and hope to gain
>some insight into buying or building one. I actually saw my first proa in the
>flesh at Moss Landing California last week, my wife thinks I am nuts for
>looking it over half an hour in the rain!

Hi, Curtis. I gotta know, WHERE in Moss Landing, and how can I see
it?? I was there a month ago (I spend a lot of time in Santa Cruz,
across the bay), but must have missed it. What boat? Who was the
owner? The designer? Enquiring minds want to know!

FWIW, as I haven't properly introduced myself, I'm the resident
weirdo, even amongst proa-nuts. I design and sail kite-powered proas
(yes, kites--those silly stick and paper thinghies Charlie Brown has
so much trouble with). Proas are a natural with kites, and I've been
doing it since 1978. I sail out of the San Fransisco Bay area; I live
in Martinez, specifically. Check out my websites at: www.kiteship.com
and at www.dcss.org/speedsl.
--
Hi! I'm a shareware signature! Send $5 if you use me, send $10 for manual!
Dave Culp Speedsailing   dave@...    http://www.dcss.org/speedsl
Kite powered boats, high speed sailing, proas and more. Check it out!

Hello group...My name is Curtis Clark and I live in Scottsdale, Arizona. I am
an airline pilot flying 737's for a living and am into sport avaition and
multihulls. I have rebuilt several planes over the years and currently have
three planes and a sailplane. I just sold this past fall my 25' Nicol
trimaran that I had owned for 12 years and purchased a like new Montgomery 17
(yawn) because it made perfect sense. It is boring, boring, boring and slow!
I have the desire to own a 25' proa that can be trailered and hope to gain
some insight into buying or building one. I actually saw my first proa in the
flesh at Moss Landing California last week, my wife thinks I am nuts for
looking it over half an hour in the rain!
Cheers!!
Curtis Clark

Hi,
I am a new member to this group having been a subscriber to the multihulls
group previously.  Some of you know me and my dreams and construction
projects.  I have been building a 30ft proa over the years and we moved from
Ohio to California in '97 hauling the partially built proa with us.  We left
California last August ('99) to move to Florida.  We had to leave the partial
proa behind - tough!  It has been adopted by a group in Three Rivers which is
near the Sequoia National Park.
We bought a Newporter 40 (hull number 91) in Florida and now live aboard in
Fort Myers Yacht Basin.  Yes, she is a cutter rigged ketch and a lead hauler!
  We are renovating her to her former glory.  She needed and still needs a lot
of work.
Meanwhile I have revisited many of my ideas and am redesigning my proa.  I
will construct a 1" = 1ft model before I go ahead and build anything.
However, some of my ideas are really difficult to reproduce to scale.
As before, I am trying to come up with a design that will resist capsize, but
will also be able to be righted at sea.  I am still intrigued by the wing
sail concept.
Meanwhile I am pleased to be a part of a serious discussion group on proas.

Peter Fynn

> I hope to have translate the main statements in a right way.
> Otthmar Karschulin

Much better translation that I could do from English to German. BTW, Othmar
and I are working on a German-English nautical dictionary to aid the
international discussions. We will place it in the vault shortly. Feel free
to ad to it.

Michael Schacht

Thanks for the translation!

I think we need to separate discussion of the Benze and
Bolger/AYRS rigs, as they are are very different in a number of
important details:

The Bolger by definition has pre-curved fixed battens, the Benze
does not.

Camber and twist control are simple matters with the Bolger, but
appear to be problematical with the Benze.

Also, the Bolger _is_ equipped with a boom, and pivots around the
forward tack/sheet and the halyard, while the Benze pivots around
the halyard and the center of the foot. Your analysis of sheeting
problems does apply to the Benze, but not to the Bolger.

I've never tried the Benze, but have built and sailed two Bolger rigs.

> Hi all,
>
> it follows my attempt to translate some (I think) interesting
> statements
(snip)

John Dalziel

Hi all,

it follows my attempt to translate some (I think) interesting
statements
about the bolger/benze rig I get from a friend (who lives in madeira).
It helped me to understand the problems with this rig. An additional
graphic of the principle can seen at:
http://www.multihull.de/P_BOLGER.HTM  (BELOW)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Introduction:
- The bolger/benze rig has vertical symmetry.
- The allotment of the depth of vault is also symmetrical
- The biggest depth of vault is at 50 percent, in the center
   of rotation.
- Such a sail has (by the deformation under stress) not a
   stable point of pressure.
- Additionally the resulting power of air (during flow) lays
   BEFORE the pivot in direction to luff (20%-40% of depth of vault) .
- As bigger the angle of flow, as more moves the resulting power
   of air to luff (leading edge of the sail?).
- The result is a turning moment around the pivot, that tries to
   open the sail profile and to enlarge the angle of flow.

Consequences:
- In some defined conditions this rig can't be controlled by
   pulling a simple sheet .
- As a reminder: At a conventional rig the pivot is in luff of the
sail,
   the sail pressure point behind. So you can pull at the sheet to place
   the sail against the flow, if you release it, the sail swings free it
self:
   It has stabile aerodynamic attributes.

Otherwise bolger/benze rig:
- It is aerodynamic instabile (see above) and not controllable by one
sheet with a working point astern of sail. Because: In some conditions
this sheet will be relieved of tension! So you need (as is well known)
a second sheet at the actual luff side of the sail to compensate the
turning moments. In this case, this (forestay) sheet is load with
tension and the other sheet nearly ineffective. If the sail has no boom
(Bolger) to stretch and/or hold it, the sail profile break down, always
in small  changes of flow angle or positions of sheets.
- Benze has neutralized this negative effect with a solid boom and two
sheets,
   which hold it like bridles. Nevertheless you have to work with both
sheets to
   control the sail, because the basic instabile properties continues.
Only the
   sailor's subjective feeling is not so impressed of it.
- To optimize the Bolger/Benze rig you can use very stiff battens or
already
   pre-bowed battens which prevent the unwished twist and hold the
profile.
- Annother solution without a boom are circular rails in which the
sheets are
   leaded. Important is, that between both sheets the sail is ever
strechted in
   the right way.
- The best solution would be to move the whole sail astern (dependent
from sailing direction). This could be done eg. by swinging the sail
head backwards. In this case the axis of rotation moves to the luff
edge, if possible untill the rig will become stabile. Disadvantage:
There may be a lot of trim work after shunting.

Resume:
   If you take in consideration the specialty of this rigs it could
realised a
   functionable configuration, exspecially for proas. But at least this
rig is
   aerodynamically not very effective an needs a lot of considerations -
not
   only at the construction but during sailing.
(Horst Duschek)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I hope to have translate the main statements in a right way.
Otthmar Karschulin

Welcome to the list, David. I was down in S.F. for Mac World, and made a
quick tour of Marin County afterwards, driving through Sausalito. I saw
Makahiki there, floating on a mooring. It looked very exotic floating there
amongst all the fiberglass!
-
> I intend to learn as much as I can about how the originals worked before
attempting any alterations. In the case of the rig, this has been no simple
matter, but I'm convinced that this rig is well suited to the boat
(particulary as regards the location of the center of effort of the sail)
and there is a lot more useful information yet to be learned about it.

I think you will find at least a few people here on the list sympathetic
toward your approach. I think your project is fascinating, and I would enjoy
reading a detailed account of what it is like to sail Makahiki. As far as I
can tell, the te puke sail is about the most extreme crab claw shape in the
Pacific. Western aerodynamics have no good explanation for it, except for a
paper by C. A. Marchaj that detailed his wind tunnel testing of a crab claw
sail in comparison to several other traditional rig types. The crab claw
tested extremely well, and sparked some serious interest in the rig.

Regards,

Michael Schacht

Hey Dave, Hi Group.

  Thanks for the link. Neat site. Neat guy! Lots of good info.

  Hey, Dave, what ever happened to the Big Proa idea?

Ron
Kismet 31 "Big Bird"


> From: Dave Culp <dave@...>


> Yes, it's finally happened. A fansite for Bernard Smith. If you
> haven't been exposed to this man's brilliance, well, shame on you.
> (Yes, it's virtually all about proas... broadly speaking!  ;-)

> Highly recommended:

Hi Robert,

  I'm wondering what features about the Smart Sail you feel
would be an asset to your DynaWing?


Ron
Kismet 31 "Big Bird"




> From: "Robert Hobbs" <dynawing1@...>

>     I am the inventor of the DynaWing, a completely new means of
creating an Asymmetrical wing-sail My main interest, is of
course, furtherance of the DynaWing, but this also includes a
great interest in any innovations in sailing. In my opinion,
sailing has fallen way behind the progress in all other forms
of transportation, and very great gains are still to be made.
These innovations will be started by "dreamers", who dare to
dream "out of the box", and picked up and developed by
everybody, if they are based upon sound principles.      I just
read the articles on the "Smart Sail", and am quite impressed
with the ease of operation. My first thought was of adapting
the DynaWing to this set-up, and I think this would hold great
promise. It would solve

So I found myself ( don't be rude! ;-) ) on Daves web site
looking at the kites and was wondering if any
launching/retrieving progress has been made. Can a boat be
pulled out of the water? Anyone got any old kites laying around
that I could play with?

Ron
Kismet 31 "Big Bird"

Yes, it's finally happened. A fansite for Bernard Smith. If you
haven't been exposed to this man's brilliance, well, shame on you.
(Yes, it's virtually all about proas... broadly speaking!  ;-)

Highly recommended:

>HI Guys
>
>My site, "Mr Smith's Amazing Sailboats", is now up and running at
>
>http://www.geocities.com/aerohydro
>
>I've included links to both the official and unofficial AYRS sites as
>well as to Dave's Speedsailing site.  You'll find these links listed in
>the "Resources" section. I hope you enjoy browsing through the
>site, and that you'll link to it from your sites as well.
>
>Cheers.
>
>Paul
>
>***************
>Paul Dunlop<dunlopp@...>
>author of the website
>"Mr Smith's Amazing Sailboats"
>www.geocities.com/aerohydro
>***************

--
Hi! I'm a shareware signature! Send $5 if you use me, send $10 for manual!
Dave Culp Speedsailing   dave@...    http://www.dcss.org/speedsl
Kite powered boats, high speed sailing, proas and more. Check it out!

This site may be of help to a lot of people on this list:

http://translator.go.com/

All you do is paste in the URL, select which language to translate
into what other language, and click "Translate" button. The web
page comes up displayed normally, with the translated text in
place of the original language.

The translation is not smooth or good- it is by machine, and the
machine has never heard of proas! But I use it to look at German or
Spanish sites fairly often, and can usually puzzle out what is being
said. It can be amusing though; "Krebsscheren-Segel" in German
("crab-claw sail"), becomes "Cancer shearing gel" when the
machine translates it into English.




> Othmar,
>
> It's hard to ask questions when I don't understand what the page says
> about the drawings  :-(  I cannot read German
>
> It would be most appreciated if you would make an small "English" version
> of your web page too.
>
>
> Thanks (Danke?)
>
>
>
> At 01:45 PM 2/29/00 -0800, Othmar Karschulin wrote:
> >Hello Michael,
> >
> >it is how it is - and I am what I am. So I waste no time to scribble a
> >first proposal for a new rig like Benze's. You remember, I wrote I have
> >bought a small 4 m proa without rig, and I think I cancel my first idea
> >of a Gibbons rig to check Benze's. Have a look at
> >http://www.multihull.de/P_BOLGER.HTM to see my first drawings. The text
> >is sorrily like ever in German, but if you have any questions about - you
> >know my email.
> >
> >Greetings
> >Othmar
> >
> > > Unfortunately, the inventor is under the mistaken impression that he
> > > can get rich from this rig, or at least get some money.
> >A real sailor and boatbuilder get in best case rich in experiences ...
> >
> >
> >------------------------------------------------------------------------
> >To Post a message, send it to:   proa_file@eGroups.com To Unsubscribe,
> >send a blank message to: proa_file-unsubscribe@eGroups.com
> >
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> >Capital One 9.9% Fixed APR Visa Platinum!
> >http://click.egroups.com/1/1896/1/_/401458/_/951861275/
> >
> >
> >eGroups.com home: http://www.egroups.com/group/proa_file
> >http://www.egroups.com - Simplifying group communications
> >
> >
> >
>
>
> ------------------------------------------------------------------------
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>



John Dalziel
____________________
It's a cardboard universe and if you lean too hard against
it you fall through.

-- Philip K. Dick

michael schacht <michae-@...> wrote:
original article:http://www.egroups.com/group/proa_file/?start=13
> Welcome to the list, Max. 6m is a popular size, it is a shame there
are no
> plans for one....yet.

Hello Michael,
you are wrong - there are plans for a Gilbert-Proa in this range
available by the author of a German multihull book: H.D. Kurtz,
ENzianstr. , 1000 Berlin.
Othmar

Welcome to the list, Max. 6m is a popular size, it is a shame there are no
plans for one....yet. I will be interested in your progress.

Michael Schacht
--

> I'm a student of civil engineering at the University of Karlsruhe,
> Germany. I'm very concerned with hydromechanics and fluid-flowing
> around bodys and, of course, I'm very interested in Proas.
> I'm going to build one this summer and hope to get new experiences.
> It would be only a small, 6m long and 3m beam, boat for two or three
> sailors, made of wood and epoxy. I have to admit, that this will be
> my first boat and surely my first try to build one. If it would be
> better than my english, it will be a great boat :)
>
> with german sailors' greeting: 'Mast- und Schotbruch!'

Hi

I'm a student of civil engineering at the University of Karlsruhe,
Germany. I'm very concerned with hydromechanics and fluid-flowing
around bodys and, of course, I'm very interested in Proas.
I'm going to build one this summer and hope to get new experiences.
It would be only a small, 6m long and 3m beam, boat for two or three
sailors, made of wood and epoxy. I have to admit, that this will be
my first boat and surely my first try to build one. If it would be
better than my english, it will be a great boat :)

with german sailors' greeting: 'Mast- und Schotbruch!'

	 Max

e-mail: osterrie@...

> it is how it is - and I am what I am. So I waste no time to scribble a
> first proposal for a new rig like Benze's. You remember, I wrote I have
> bought a small 4 m proa without rig, and I think I cancel my first idea
> of a Gibbons rig to check Benze's.

Gutsy move, Othmar! Dieter (the previous owner of your proa) had a terrible
time with that Bolger rig, and is the Benze rig sufficiently different? I
would make a sailing model first to test!! The rig looks very simple
mechanically to do with a model: just one R/C servo to rotate the boom and
sail.

Have a look at
> http://www.multihull.de/P_BOLGER.HTM
> to see my first drawings. The text is sorrily like ever in German, but
> if you have any questions about - you know my email.

I get the basic idea, but since I can't read it, I'm sure the details are
lost on me! Terrific drawings, though. You are a wiz with your drawing
program. (Or would that be proa-gram?)

Personally, I am really excited about the Gibbons rig, since it is a lifting
rig, much like the original crab claw. (Though the obvious simplicity of the
Benze sail has its appeal. It looks very easy to reef and furl, as well.)

Michael Schacht

Othmar,

It's hard to ask questions when I don't understand what the page says about
the drawings  :-(  I cannot read German

It would be most appreciated if you would make an small "English" version
of your web page too.


Thanks (Danke?)



At 01:45 PM 2/29/00 -0800, Othmar Karschulin wrote:
>Hello Michael,
>
>it is how it is - and I am what I am. So I waste no time to scribble a
>first proposal for a new rig like Benze's. You remember, I wrote I have
>bought a small 4 m proa without rig, and I think I cancel my first idea
>of a Gibbons rig to check Benze's. Have a look at
>http://www.multihull.de/P_BOLGER.HTM
>to see my first drawings. The text is sorrily like ever in German, but
>if you have any questions about - you know my email.
>
>Greetings
>Othmar
>
> > Unfortunately, the inventor is under the mistaken impression that he
> > can get rich from this rig, or at least get some money.
>A real sailor and boatbuilder get in best case rich in experiences ...
>
>
>------------------------------------------------------------------------
>To Post a message, send it to:   proa_file@eGroups.com
>To Unsubscribe, send a blank message to: proa_file-unsubscribe@eGroups.com
>
>------------------------------------------------------------------------
>Why wait for a credit decision?  Get one instantly!  Apply for
>the Capital One 9.9% Fixed APR Visa Platinum!
>http://click.egroups.com/1/1896/1/_/401458/_/951861275/
>
>
>eGroups.com home: http://www.egroups.com/group/proa_file
>http://www.egroups.com - Simplifying group communications
>
>
>

Hello Michael,

it is how it is - and I am what I am. So I waste no time to scribble a
first proposal for a new rig like Benze's. You remember, I wrote I have
bought a small 4 m proa without rig, and I think I cancel my first idea
of a Gibbons rig to check Benze's. Have a look at
http://www.multihull.de/P_BOLGER.HTM
to see my first drawings. The text is sorrily like ever in German, but
if you have any questions about - you know my email.

Greetings
Othmar

> Unfortunately, the inventor is under the mistaken impression that he
> can get rich from this rig, or at least get some money.
A real sailor and boatbuilder get in best case rich in experiences ...

I have seen a video of an R/C model trimaran that Benze made. Very slick
operating system. He controlled the sail with the lower boom, which could
spin around 360 degrees all day if needed. The fact that he could control
the sail and the boat so well with only one servo says something!
>
> it was not easy to realize how the Benze rig works. The first thought
> is 'oh a Bolger rig', but after some reflections it seems to be more a
> kind of a Balestron rig or a hybrid of both. The main problem of the
> Bolger rig is to control the sail in any other direction as you can
> pull the sheets down. So you may need a circle rail arround the mast to
> get always enough tension in the sheets - or a twin boom like Benze!

I think that in essence it is  a Bolger rig with a second boom below. It
truly rotates on the sail centerline now, which would cause an
aerodynamically unbalanced sail. I wonder if that would be a problem?

> If I would use this rig on a proa, it don't need an arched mast,
> because there is no necessity to turn about 180 degrees. But I need of
> boom with the half length fore and aft the mast to transfer Benze's
> idea to a proa. The (now) single mast could be holded by shrouds and
> stays to minimize the weight.

Agreed. A simple mast in the center, perhaps partially free standing? (Bury
the mast in the hull so that it can take loads if the proa is caught aback,
but have a single stay to the outrigger for normal sailing loads, which will
take advantage of the classic proa geometry of mast and beam in compression,
stay in tension, for the lightest possible structure!)

The arch mast may be wanted however, if normal tacking is wanted, or if it
becomes desirable to tack the sail during a shunt, instead of swapping leach
and luff.

> The control of the sail works by a single sheet independent from the
> direction of wind or by a transmission to a 'sail steering wheel'
> addional to the normal steering wheel and ...
> .... but stop, my brain is already producing things uncontrolled ...
> I am very interested in the further use of the Benze rig and to hear
> more about the experiences which will made with it - perhaps on a proa?

Me too. Unfortunately, the inventor is under the mistaken impression that he
can get rich from this rig, or at least get some money. I have chatted with
him briefly at a boat show about 10 years ago. He should really just put the
idea and all workings in the public domain, so that with many people working
on it something might really happen. The exciting thing is that he has done
a lot of development work, this rig seems to be near ideal for a proa, and
it might be possible to get him to design an experimental version.

MIchael Schacht

> http://www.boatshow.com/BenzeSmartSail.html
> Is this a dream proa rig, or what? It looks like he got a Bolger rig
to work!
> Michael Schacht
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~
Hello Michael,

it was not easy to realize how the Benze rig works. The first thought
is 'oh a Bolger rig', but after some reflections it seems to be more a
kind of a Balestron rig or a hybrid of both. The main problem of the
Bolger rig is to control the sail in any other direction as you can
pull the sheets down. So you may need a circle rail arround the mast to
get always enough tension in the sheets - or a twin boom like Benze!
If I would use this rig on a proa, it don't need an arched mast,
because there is no necessity to turn about 180 degrees. But I need of
boom with the half length fore and aft the mast to transfer Benze's
idea to a proa. The (now) single mast could be holded by shrouds and
stays to minimize the weight.
The control of the sail works by a single sheet independent from the
direction of wind or by a transmission to a 'sail steering wheel'
addional to the normal steering wheel and ...
... but stop, my brain is already producing things uncontrolled ...
I am very interested in the further use of the Benze rig and to hear
more about the experiences which will made with it - perhaps on a proa?

Greetings
Othmar Karschulin
http://www.multihull.de

http://www.boatshow.com/BenzeSmartSail.html

Is this a dream proa rig, or what? It looks like he got a Bolger rig to
work!

Michael Schacht

Oh yes, I forgot to mention, would you mind putting up a link to PFI at
eGroups on your site? It would help get more EU members, I think.

Michael Schacht
--

Welcome Othmar! As the first person to sign up, (the list moderators don't
count) we should give you some sort of prize! How about all the banner ads
you can stand at eGroups? :-)

Anyway, good luck on your new proa. We will be very interested to hear how
it comes out. Have you seen Gary Dierking's latest site update? Lots of
Gibbons rig pics.

Michael Schacht
--


> From: "Othmar Karschulin" <karschulin@...>
> Reply-To: proa_file@egroups.com
> Date: Wed, 23 Feb 2000 07:27:07 -0800
> To: proa_file@eGroups.com
> Subject: [proa_file] New member
>
> Hello Proa Friends,
>
> my name is Othmar Karschulin from Germany and I'm engaged in
> multihulls since 15 years. I designed my own 30 ft wharram-
> based catamaran 7 years ago and sold him last year because
> 'time and money' simultaneous was not possible for me.
> My first contacts with proas happens by books and in the last
> years via internet. Therefore I'm the usual theorist:
> 'A giant in information but a dwarf in knowledge'.
>
> To change this I bought last week a little proa to do my
> first practical experiences. You can see some pictures:
> http://www.netz-dienste.de/proa
> It was built by Dieter Schulz and he tried to sail it with
> a Bolger Rigging (without success). My intention is to use
> the idea from Gibbons. To get (inside the possible geometry)
> a sail area about 7,5 qm the 400 cm hull get two bowsprits
> (2x25 cm). The changes will be made in spring, so I hope to
> report about the handling in summer. Additional I publish
> the experiences on my website.
>
> I congratulate Michael on his very fine site and will try to
> emulate him with my own activities:
> http://www.multihull.de (and from menu: 'Proa-Spezial')
>
> Cheers
> Othmar Karschulin
>
> PS: Please forgive my awful grammar and wording
>
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Hello Proa Friends,

my name is Othmar Karschulin from Germany and I'm engaged in
multihulls since 15 years. I designed my own 30 ft wharram-
based catamaran 7 years ago and sold him last year because
'time and money' simultaneous was not possible for me.
My first contacts with proas happens by books and in the last
years via internet. Therefore I'm the usual theorist:
'A giant in information but a dwarf in knowledge'.

To change this I bought last week a little proa to do my
first practical experiences. You can see some pictures:
http://www.netz-dienste.de/proa
It was built by Dieter Schulz and he tried to sail it with
a Bolger Rigging (without success). My intention is to use
the idea from Gibbons. To get (inside the possible geometry)
a sail area about 7,5 qm the 400 cm hull get two bowsprits
(2x25 cm). The changes will be made in spring, so I hope to
report about the handling in summer. Additional I publish
the experiences on my website.

I congratulate Michael on his very fine site and will try to
emulate him with my own activities:
http://www.multihull.de (and from menu: 'Proa-Spezial')

Cheers
Othmar Karschulin

PS: Please forgive my awful grammar and wording

Hi,

Proa File International is a public world-wide forum for the discussion all
aspects of proas and outrigger sailing canoes, including design, sailing,
building, racing, cruising, and history.


Cheers,

Michael Schacht & John Dalziel