Re: [Cal_Boats]Jerry, centerboard(David)
David,
The Cal 24 has a keel, it is a low aspect keel, cut away at the forefoot but extending from below the cabin trunk, forward of the mast, to where the stern rises out of the water. Nowadays they call it a "full keel". The rudder is a paddle shaped affair like a cat boat. The Cal 24 was designed to be trailered, but sits much higher on the trailer than a MacGregor which has a true retractable keel.
The Cal 24 keel draws almost 3', has 800lbs of lead. The centerboard is a 3/4" thick, pie shaped affair that extends thru the keel and increases the surface area and aspect ratio of the keel going upwind. It is inefficient and ineffectual, but helps if you use your imagination. It adds so little pointing ability and stability that when it is up or down, I can't tell by feel. It does, however, seem to help balance the helm going upwind, but I've found that barber hauling the jib by a few inches helps even more. With good, strong wind the boat seems to point just fine, with light wind fin keel boats like a Catalina 27 can easily out point me by 5+ degrees (feels/looks like more than five degrees!)
Interestingly, the Cal 24 and the Cal 46 have about the same hull shape and underbody, except the Cal 46 has a somewhat deeper keel proportionately, and has a detached F-86 saber jet tail type rudder.
Attached a photo of Shpritz with me in foreground dancing with Gilley, a gray wolf who is mascot of a fisherman who had his boat at Annacappa Marine in Channel Islands the same time as I. Very sweet canine! My centerboard is hanging outside it's trunk, lower than full down position...trying to figure out why it wouldn't go up and down without hanging up, but that's another story.
Jerry
--- On Sun, 4/19/09, david dobbs <tm… [at] yahoo.com> wrote:
From: david dobbs <tm… [at] yahoo.com>
Subject: Re: [Cal_Boats]Jerry, centerboard
To: Ca… [at] yahoogroups.com
Date: Sunday, April 19, 2009, 2:46 PM
Jerry,
I can't believe you actually popped for a new c/b! Did you win the lottery? Better put a retaining line on this one.
Regards,David Dobbs, with a keel.
--- On Sun, 4/19/09, Gerald Sobel <sobel_solar@ yahoo.com> wrote:
From: Gerald Sobel <sobel_solar@ yahoo.com>
Subject: Re: [Cal_Boats]Monel, UHDPE, Salsa, rigging, was: cal20 bulkheads
To: Cal_Boats@yahoogrou ps.com
Date: Sunday, April 19, 2009, 2:06 AM
Monel bolts? OK, What about Ultra High Density Polyethylene? My new centerboard will be suspended by a cable of such stuff, no more worries about corroding copper swedges!!!! That was the down fall of my old one (no pun intended). Does anyone make UHDPE fastners? If not, why not? And why not UHDPE instead of carbon fiber? I bet it wouldn't fail catastrophicly, maybe just creep to death if it is woven. And what about the new "ultra-high strength concrete? Sounds like good centerboard material. Gotta check this out.
Jerry
PS BTW my main halyard is SK75 Dyneema, 1/8" fits nicely into the groove of my halyard sheave. (it might be the old SK60, all I know is it was called Amsteel, and has a silver color to it). The latest stuff is SK78, heated and prestreached, it has less streach and creep than SK 60 and 70.
BTW, anyone use New England rope Salsa single braid for genoa sheets? What about those new synthetic thimble style shackles?
There are new ones out that look like miniature hangmen's knots with a little tiny line to disengage them.
--- On Sat, 4/18/09, Lord Nougat <lord_nougat@ yahoo.com> wrote:
From: Lord Nougat <lord_nougat@ yahoo.com>
Subject: Re: [Cal_Boats] cal20 bulkheads
To: Cal_Boats@yahoogrou ps.com
Date: Saturday, April 18, 2009, 7:16 PM
Seriously? Monel can handle those kinds of loads?
Either way, I'm considering changing my name to chris.
From: Mark Alan Stahnke (MAS Consulting) <masconsult@cox. net>
To: Cal_Boats@yahoogrou ps.com
Sent: Saturday, April 18, 2009 12:57:14 PM
Subject: Re: [Cal_Boats] cal20 bulkheads
I believe that better than SS is monel for Cal 20 keel bolts.
From: chris h
To: Cal_Boats@yahoogrou ps.com
Sent: Saturday, April 18, 2009 11:42 AM
Subject: Re: [Cal_Boats] cal20 bulkheads
On Saturday 18 April 2009 14:06:57 Lord Nougat wrote:
> Cal 20s are wonderful. My comment would be: Congratulations!
Here's a summary of an offline conversation I had with a lad who works at
Schooner Creek repairing CAL-20's. There is quite a large fleet up there.
One thing that is not in the discussion is the cost of keel bolts. Most of the
stuff I need to fix up my boat will be purchased from Steve Seals so I don't
mind saying that if you drop the quality of stainless steel on the bolts to
one grade lower you save over a 100 bucks and available anywhere. Personally,
I don't think it makes a difference if the bolts are properly sealed and
routinely checked.
The bolts specs are here:
http://www.go2marin e.com/search. do?q=fasco+ screw+30995& x=21&y=13
Fasten All in
Canada has the same bolts in a lower quality of SS for 17CDN a
piece which means I also don't have to deal with the 20 percent exchange
rate.
Best of luck, they are very nice boats.
BTW...if you do buy a CAL-20 I think you will be either the 4th or 5th Crhis
on the list with a CAL-20, its getting rather weird, as Chris's seem to like
CAL-20's. Perhaps we should run a pole or something on the yahoo page to see
what the names of other owners are on this list with a CAL-20
Enjoy the boat.......she' s sweet.
--
/ch
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