70457Re: Micro with chine runners?
- Jul 26 8:00 AM
---In email@example.com, <c.ruzer@...> wrote :awesome post. his book, ow resistance boats, was a huge inspiration for me and inspired my to design and build a sprit rig for my dinghy; which turned out to be the perfect rig for that boat and has given me years of great sailing...almost two decades, in fact. i have a lot of respect for the late Mr Jones.Long ago now a Bolger friend, the late Thomas Firth Jones, in his"Multihull Voyaging" (1994) looked at this type of hull appendage. Dating back to the late 1960's, early 1970's, especially amongst certain Wharramites, claims began circulating of the much improved pointing and windward performance of boats after the fitting of "vortex (or sometimes "anti-vortex") panels" (see Sea People magazines, etc.). The explanations often conflate with those of the "chine runners" magic today.Anyway, in case you haven't seen Jones' 1994 book I'll copy below from page 76 the gist of what he thought of the "thinking":"For years, both Rudy Choy and James Wharram tried valiantly to design catamarans that would go to windward without daggerboards. Many of Wharram's designs still don't have them. Some of his builders put them in anyway, and others put in "vortex generators." People who are attracted to Wharram's cats tend to originality. Vortex generators are long shallow fins that stick out perpendicular to the sides of hulls, and allegedly trap water and keep the boat from slipping sideways without deepening draft. People who have installed them like them, and claim that they improve light-air performance as well. When this technology reaches the aircraft industry, it certainly will make airport runways less congested."
Out on the edge there
"= In the *10th* Second of Forever =
I thought of the sea and your white yacht drifting ...
(..on the edge of the edge of the edge)
= In the *5th* Second of Forever =
I thought of the vermillion deserts of Mars ~ the duned forests of Venus ...
= In the *3rd* Second of Forever =
I thought of '|rain|' against the window - and - I thought of the > wind > >
= In the *2nd* Second of Forever =
I thought of the *pair* of >broken< **shades** ___ lying __ on _the tarmac_
= In the >1st< and +final+ *Second* of Forever =
I thought of the long past that had ~> lead ~> to ~> ~> NOW <~ and never ~>never>~> `never"
I got vortex generators ;)
Set me any more straighter
I've got an orgone accumulator
Those energy stimulators
And it makes me feel greater
It's a back brain stimulator
It's a cerebral vibrator
But an orgone accumulator
Is a superman creator
It's no social integrator
It's a one man isolator
I'll see you sometime later
With apologies Mr creator
time is worth much more than paper
but seldom burns
with such bright flames as these drafts
Robert Calvert / Knut Gerwers - Ten Seconds of Forever - entry / data
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