C. Morejohn is Brainwashing my freind

Stub keel that house's a swinging centerboard, like the old trailer sailors, shoal draft, will take ground and no cabin intrusion as its all external.



Not the best pic, had a little more conservative in mind, it also gives the benefit of some lateral resistance board up.

 

Don't even need to be that fancy, the chopper gun Court 650 and 750 mono sail boats had a swing galvanised sheet-steel "keel" that worked quite well and did not intrude too much http://svc048.wic007tv.server-web.com/c650.htm though somewhat bigger than discussed here.... Known in USA # Thousands have been built in the U.S. as the Catalina 22!
# Modern in the late 70's featuring pop-top and fully moulded interior, clever swing keel design to maximise interior space. copied from another ad in Aussy.....

 

Liked the keel Meanz found here, btw,

The boat design look pretty much like scaled up version of the "a-jolle" , but with a deck. btw; they can sail, sort of - fun. We had/ have these here in Norway, found out that in the US of A, it goes under the "The optimist Pram class". Come to think of it, I've sunk one of those, that keel does not take unplanned grounding too nice, the keelbox crashes..... Had forgotteen that episode......

More information if you google for above words, or some info here too:
http://www.optiworld.org/epoxy.html

Hmmm come to think of it.....
Cut off 2 feet in front...
http://www.bateau.com/studyplans/AD14_study.htm?prod=AD14

Inspiration can be gathered everywhere...

 

Thanks guys,

So, I lowered the seats, the mast and boom. Most of the crap that I get from people has to do with the front transom. Just so you know; LOA= 10.5' beam=4.5' , sail (gaff rigged) area is 58 sq. ft. The curve of the sides and rocker is 1/8th the length of a 16' double ender with about a third cut off the back and about a foot and a half chopped off the front.

The details are making my nuts....

I've been on vacation for two weeks and so I've spent way too much time working on it, starting to talk to myself...

Thanks for the links!

Chris

 

Ache?

 

I am unfamiliar with the native Gorilla tongue, however I will assume that you are also not very exited about numbers and such, or have had too much coffee.

 

me, my, pot ate O', po tart O' ..... Joke Joyce?

my nuts ache for different reasons.... that makes me nuts!

 

oops, I've made a funny typo

 

This is piracy (very friendly so please do not get cross) please go to http://www.boatdesign.net/forums/showthread.php?t=23088 and give Fanie some "good rep points" and sign it as I have done to your rep (post 51) to see your points, click on "User CP" at the top of the page on the left.... Some of the story is on todays drivel thread.... Thanks and good sailing

 

Hello,

Up near the little picture of the mouse with the circle thing around it, it says "Junior Member". They're not kiddin', I don't even know about points but just this weekend I tried to restore an old antique dining room table and some a'hole SCREWED THE BLOODY LEAVES IN! They are permanently damaged, very unfortunate.

It would have been a lovely table.

Chris

 

Ok, I get confused in here today, somthing language, methink...

Ok; What is a "leave" in a table?

 

?

How high up into the wind can she go?
Is it the hullshape that partly acts as a keel? (for low heel, that will be...?)

 

The original was "Leave the bloody screws in" as uttered by Fanie... we mashed it up a bit for fun. So many words sound the same in Engrish!

 

Hi Knud,

I don't know how high she can point, as I have no personal experience with this kind of boat.
Yes, the hull shape is part of the trick, but the "secret" is below the water..in the second picture in the link I gave, you can see something protruding from the chine. That's what's usually called "chine runners", something invented by Matt Layden in the late eighties and further perfected over the years.
You can find more information about Matt Layden and his boats on:

[B]http://www.microcruising.com/[/B]

Another source of information is the microcruising yahoo group

As far as I know Chris Morejohn is the only designer-builder who has taken this chine runner concept out of the "microcruising" scale and applied it to 40 foot+ ocean cruisers (his "Hogfish" sharpies)

As for the efficiency of the chine runners, there are now enough Paradox sailors using them and testifying they work very well. Matt Layden once said a centerboard would do a better job when going to windward, but he prefers to be able to really sail in very shallow water and he hates moving parts aboard his cruisers. In very small boats, not having to live around a centerboard case, is of course a blessing.

Chine runners have a close cousin in the multihull world: the anti-vortex plate.
They're similar in theory, although designed for the much higher catamaran speeds. One designer using anti-vortex plates is Bernd Kohler, who has written an article about them, that you can download here

I only started replying in this thread, because of the name C.Morejohn in the title. I was hoping to read his ideas.
It would have been more interesting if the OP would have explained how and why Chris Morejohn is "brainwashing his friend"....

best regards

 

Ooops, "in the second picture in the link I gave", should be: "in the third picture"