PHRF rating, empenage mods, was RE: [Cal_Boat(Rudder)
dEmo,
That no change of PHRF sounds nice, but a bit surprising, since it seems the new rudder would have less drag, else, why bother changing the shape? Would it be fair to Cal 40's racing with the old one (the inverted Sabre Jet tail)?
Which brings me to my CB project. If I change the shape, don't I automatically get dinged three seconds? In my case, at least, I'm not racing against any other Cal 24s (no one else is racing old Cal 24s, at least not on the West Coast, and certainly not in So Cal), and, my pointing ability is abysmal. I'm constantly being out pointed by other boats by five to ten degrees. aaaAAARRRGHH. One person said if I don't change the area or depth the PHRF people wouldn't ding me, but the new rudder shows considerably more depth and more aspect ratio, plus, thinner cross section. Obviously, I can't change my cross section unless I don't want the CB to be retractable....for trailering purposes or, in my case, anchoring in the shallow lagoon at Cat Harbor...for free.
Can you imagine me putting on a CB that's got minimal chord and maximal depth, while I'm at it, with a torpedo bulb, and horizontal whisker fins, like an America's cup boat? Interesting idea. I would look funny on my New England cat boat style hull, wouldn't it?
Jerry
--- On Fri, 5/15/09, ti… [at] ch2m.com <ti… [at] ch2m.com> wrote:
From: ti… [at] ch2m.com <ti… [at] ch2m.com>
Subject: RE: [Cal_Boats]QM Race feeder to Trans Pac, was:The Cal 40 Belle Aurore (Rudder)
To: Ca… [at] yahoogroups.com
Date: Friday, May 15, 2009, 2:05 PM
PHRF stayed even, as it is the same surface area.. at least
in so. cal, sf, and pacific northwest.
I have heard other regions have gotten a hit.. but not on
the West Coast.
NO Transpac this year.. yipes, that hurts to say..
Cal Gal is getting refit for either a Vic Maui or Pacific
Cup in 2010.
A small tear will wander down my cheek as the Transpac
starting gun sounds and my wallet inflates from all the money I saved pressing
against my other cheeks..
From: Cal_Boats@yahoogrou ps.com
[mailto:Cal_ Boats@yahoogroup s.com] On Behalf Of Gerald
Sobel
Sent: Friday, May 15, 2009 12:19 PM
To:
Cal_Boats@yahoogrou ps.com
Subject: RE: [Cal_Boats]QM Race feeder to
Trans Pac, was:The Cal 40 Belle Aurore (Rudder)
Cap'n dEmo, how did the new rudder affect you PHRF? If this
new rudder had been used as a tail empanage on the F-86, instead of
the inverted Cal 40 model, during the Korean "police action" of 1949-1953,
would the Air Force have shot down more Mig 15s? Confused historians want
to know.
Is, or, R, you going to be at the Mariner's
Village/Shorline Yacht Club, for the TransPac; anyone on the list going to
be there (or be square)?
I will be doing the Queen Mary
feeder race in, in July, Neptune willing! We will be feeding the big big
race, but not doing it, in me Cal 24 Olde. I got big plans to make it
around the Death Cape, Palos Verdes, the ship wreck, buoy R10 without
getting stuck in steep chop and becalmed and left in the wake of the
fleet, like in all previous QM Races. I will be chanting sea shanties to
Neptune and sprinkling libations, liberally, before we
depart.
If Eric, me trusty foist mate, has enough to drink,
at the after the race party, at Shorline YC, he will be disinhibitted, up
dancing wildly half passed midnite. A sight to behold to please the Sea
Gods. Arrrghh!
Oh yes, and another hearty
ArrrgghhhHH!
Jerry
--- On Fri, 5/15/09,
timmothy.lessley@ ch2m.com <timmothy.lessley@ ch2m.com>
wrote:
From:
timmothy.lessley@ ch2m.com <timmothy.lessley@ ch2m.com>
Subject:
RE: [Cal_Boats] The Cal 40 Belle Aurore (Rudder)
To:
Cal_Boats@yahoogrou ps.com
Date: Friday, May 15, 2009, 10:43
AM
Very similar to the rudder project that we did
in 2000 for the Pacific Cup.
In all, the Cal-List put together 25 rudders
for the Cal 40 (& 36) at significant savings. If each of
us did a one-off they would have been @$5,000 each.
We sold the rudders on a production run for
about $1,200 each.
We left the plug and mold with Foss Foam and
Doug Grant in southern California.
This rudder, per my recollection, has been
amalgamated as a Cal 40 class rudder.
From the photos below you can see the
difference between the stock barn door and the elliptical rudder. It's
attack angles are improved and it is much thinner (requiring the bushing
design below).
My experience is that the new rudder is much
easier to drive, and stalls considerably less.
dEmO
From: Cal_Boats@yahoogrou ps.com
[mailto:Cal_ Boats@yahoogroup s.com] On Behalf Of Michael
McElhaney
Sent: Friday, May 15, 2009 4:50 AM
To:
Cal_Boats@yahoogrou ps.com
Subject: Re: [Cal_Boats] The Cal 40
Belle Aurore
Wow! That is unfortunate
alright. I hope somebody had insurance. Where did he get the new stick,
I wonder, and at what price?
I notice she has a fancy racing rudder.
Does it really make that much of a difference?
She also has a
different boom than original. Our Cal-40, Celtic Naut, still has
the original boom with huge Merriman blocks. It's only 4:1 on the
mainsheet and a bear to adjust in a blow. How is Belle Aurore's
boom rigged? I think Fin's Radiant is rigged the same. It sure
looks like a lot cleaner rig.
My "to-do" list seems to have just
gotten
longer...