Aftmast rigs???

Yes, Dynarig and kites are VERY interesting.

 

Tacking the Dynarig

Very quitely, shuu....Not many folks have brought this question up, but there could be real problems with tacking that dynarig on a catamaran.

Rob Denny has done some interesting model work with a dynarig application on a shunting proa...videos

(I might add that Rob is another major critic of the mast-aft concept...oh well, that's go with the forum's purpose

 

Not really an aftmast setup

but very much the single "foresail" setup, i dont really know what you call this

but it works

http://www.youtube.com/watch?v=8TtcZjAuF4A

nice sailing anyway

 

Now that is what I call desperate. Besides, that is not an aft mast rig. That is something about mono's that put me off completely, where do you find so many people to weigh it down ? I also don't want to hang my butt in the water. Especially where we're going this month end they say you steer the boat between the bull sharks to get out the river mouth. Hang your butt out there.... yeah right

How do you fish from that boat ?

 

Interesting Manie, never seen that. Learn something new everyday

 

Looks like a lateen to me. "...uncompromisingly described as the most dangerous rig ever devised by the wit of man." (Phillips-Birt).

Cheers,

Earl

 

Looks a simple setup to make where fancy technical components are not available and lots of fun...- What is this "most dangerous" rubbish and think of "Fastnet" disaster of years ago, the danger is the foolishness of the skipper/crew....

 

Aft-mast rig -- a sighting (~25 years ago)

(Just happened upon this topic -- I know it's old -- and just registered.)

Something like ~25 years ago I saw an aft-mast boat docked in Westport, WA -- apparently being lived-aboard. IIRC, it was a monohull that had a yoke mast rising from well aft and leaning forward at a steeper angle than depicted in the images linked to this thread -- with a VERY hefty backstay attached at a not-too-different angle at the stern, and no provision for a "main". I remember two big roller-furled sails (jib & staysail) and overall rough condition of the boat. Seems to me it had some huge legend on the side, and was ~40 feet long. (But it's been a while . . . )

FWIW

 

I suspect you are talking of the vessel(s) in this subject thread
http://www.boatdesign.net/forums/boat-design/wishbone-sailing-rig-1999.html

 

Big Overlapping Headsail

This subject has come up more than a few times before on this tread, and often there are so many modern interpretors that seem to want to throw away those big overlapping headsails in favor of fractional jibs.

Well here is a nice shot of 'LeBlack', a superhot racing catamaran on Lake Geneva that is possibly a lot of the inspiration for the latest AmCup cat 'Alinghi'

Now LeBlack is a real fast boat...one that makes it's apparent wind likely go way forward in most conditions. I realize this is termed a 'screecher' she is flying, but I don't image its gets a lot of reaching work . I venture to say it does a lot of windward work. So why an overlapping big headsail

And then there is Alinghi using a double headsail arrangement...all too confusing

 

Brian, you started this aft mast thing. What the heck do I shout back at people when they shout at me 'what the hell is that thing you have there' ???

 

BOLD experimentation...something they're affraid of...too conservative

 

Sirs, as I have been looking at the Aft-mast rigging, I would like your opinion on the idea of incorporating an A-frame mast configuration with the Aft-Mast configuration. I could then use 2 jibs as main, and a third permant station for a storm jib. I would also not be using a wishbone sail as you have planned in you site. As I am building a 50' sailboat here in Israel, I would be particularly intrested in any feedback about this idea.

 

There are lots of engineering considerations to be calculated - I am going through that process now as I will be using a John Hitch sail configuration on my Bob Oram designed 39C - have a look at the links in my signature area below....
The images 2372 & 2373 on post 437 of thread "My little piece of peace" for an early mock up of the layout... The mast is canted about 15 degrees aft... A genoa on reefing/furlers to each bow giving 39.5 sq metres (425 sq ft) each and a blade jib on reefing/furler of 9 sq metres for a total sail area of 97 sq metres (947 sq ft) - Objective is to keep everything as simple and elegant (engineering wise as possible) whilst being very easy to manage for an ageing owner

Here is John's current yacht "X-IT" - John is my senior and sails solo...

 

I wonder how well she points Mas?