Keel Hauled (vital C18 keel repair information)

Drewy
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Postby Drewy » Sat Nov 10, 2007 3:57 pm

Go Dave, Go

This post should be printed out and put in a time capsule.

They will honour you as a pioneer in 200 years!!! :wink:

Drewy
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Leerac
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Postby Leerac » Sun Nov 11, 2007 7:12 pm

Dave, sorry Capt Cook, did he say sticky !!
What is this stucky whoops sticky business !
These plates yeh I'm in a bit of a s@#$%y with it
I dont know whether to do something radicle with a 20mm plate
that now weighs 80kg or have a new plate made?
(Bundy Bruce)
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fritzelhund
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Postby fritzelhund » Sun Nov 11, 2007 7:25 pm

Has anyone done the exercise of having a new plate built ???

How many dollars ???? assuming the original design ( give or take a modded leading and trailing edge) that could be attempted with an angle grinder and earmuffs. I suspect a local engineering shop could do one and organise it to be dipped too, but at what cost ? They organise to have off road camping trailers dipped on a regular basis.

What costs are involved in just getting a rusty one sandblasted and then re dipped ?

( Better do it soon Leerac as all these tradespeople go into shut down for Christmas mode soon )
Entia non sunt multiplicanda praeter necessitatem....

jamesw
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Postby jamesw » Sun Nov 11, 2007 7:44 pm

Drewy - this thread will still be going in 20 years time!!

As to new plate, yes is the answer. First SPLAH o (that's Peter Wilson - posted as SPLASH - I add the 'o - with me so far?). Had a new plate made - used someone up on the Central Coast (Godzone country) cost him $1500 if I remember right. Can't remember what he used to cover it with though. Look back on the forum - he talked about it (lots!!). They didn't use the standard Careel Bible method - used 'new' ideas - made him quite fast (nearly too fast).

The people who made the plate had also made one for a Hartley 16 - in stainless - cost him $7k apparently.

Also just recently Brad I think - after his little tiff with the bottom of Pittwater has (or is) increasing the width of his plate from the old 12 to 20 with the addition of two plates either side. I can't see why this wouldn't work. He hasn't reported back of late but hopefully he'll see this and put me right.

J
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maxm
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Postby maxm » Sun Nov 11, 2007 7:52 pm

jamesw wrote:Had a new plate made - used someone up on the Central Coast (Godzone country) cost him $1500 if I remember right.


That one was shaped which adds a LOT to the cost. An standard one would be more like a quarter of that.
Max
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jamesw
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Postby jamesw » Sun Nov 11, 2007 8:25 pm

but Max, these guys are hot to trot - they want to take the Big Plate back with them next year. Not messing with the QLDers - strewth.
Katrina C18/200

fritzelhund
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Postby fritzelhund » Sun Nov 11, 2007 8:35 pm

Busy tonight aren't we !
And here was Drewy thinking Careel.com was dying !!!!!!
Entia non sunt multiplicanda praeter necessitatem....

Brad & Joanne Payne
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Postby Brad & Joanne Payne » Sun Nov 11, 2007 9:22 pm

My ears were buring, thought I heard my name mentioned.
Re the keel, have removed what turned out to be a 10mm keel,
Now in the process of building a new one, 12mm plate to the shape in the bible, and have had welded on two x 4mm plates either side, have ground leading and trailing edges.
Just finished painting with POR15 and filling one side with exopy for shaping/profiling.
Will be painting a final coat with POR15 (over the epoxy) and then a top coat of two pack.

Haven't yet checked the weight, will check and let you know.
4mm side plates are 333mm wide x 875mm long on leading and 785mm on trailing. Welded 50mm back from leading edge of 12mm plate, leaving 150mm to the trailing edge.
Costs: the plates lazer cut were $350, cost of a 20mm plate shaped as per bible was $1000.

If it is of interest I can post some photos.

regards
Brad
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Leerac
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Postby Leerac » Mon Nov 12, 2007 6:19 am

Brad some photos would be good even if you start another post,
and do you know what the 2 x 4mm sheets weighed ?
What condition was your keeel plate in, did you have it sandblasted before welding plates ?
How much POR15 did you use ?
Im very interested as Im not sure yet which way to proceed.
(Bundy Bruce)
Quintrex explorer 390 15 hp yamaha stink tinnie

Brad & Joanne Payne
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Postby Brad & Joanne Payne » Mon Nov 12, 2007 10:28 am

No problem, will take some photos tonight.
Did not check weight of 4mm plates.
Have had a new 'centre' plate made.
POR15 was a 500ml can, used about 250mls on 3 coats all around.
The POR15 does give a very smooooooth finish.
Will weigh it tonight (with only one side epoxied) and let you know the details.

Regards

Brad
Brad & Jo

PaulD
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Postby PaulD » Mon Nov 12, 2007 11:30 am

Can I butt in with a fresh question -

I cut a hole in the cabin floor near the post - 3 litres of water.

So I should find the source -

I assume it is from the keel pin through the keel case ( centreboard pin through the centreboard case). I should add that the keel case seems as strong as an ox.

[I'd like to but won't revamp the keel - another day.]

The keel pin - Cap't Cook's photos show the pin accessible just from the port side of the keel case - not the starboard side : Yes?

Once the pin is uncovered, ( and i have the keel weight supported from below with a jack or the wife) and assuming its rusty and shot, what's the replacement?

Lastly, I assume the pin sits in a tube ( seems to be the set up from the photos), so what do you use to replace that?



Thanks heaps.
Paul D.

Drewy
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Postby Drewy » Mon Nov 12, 2007 9:01 pm

Gday James

Is it true that there is a Careel 18 with a drop keel???

This would be the best mod to a keel?

Talking it up for the Nats already - I like it!!!!!!!!!!!

Maybe Bruce could install the first drop/ canting keel in a C18

Drewy
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IanLee
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Postby IanLee » Tue Nov 13, 2007 9:11 am

I do not know of any Careel 18 or 22 with a drop keel though I think James did contempalte it, more as an intellectual exercise.
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jamesw
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Postby jamesw » Tue Nov 13, 2007 10:19 am

There are C18's with FIXED keels. I'm not sure about dagger keels, you'd have to consult the rules, certainly for the 22 they say it must be a swing keel. For the 18 I'm not so sure, I think the keel is unrestricted, but I've often been wrong in the past!

It is said that the fixed keelers go uphill better - I think there is one in the for sale section - and I have a pic from the old days of one on a trailer too.

Nope, I'm right (yippee).

(c) Centreboard: This shall fit within the moulded centreboard case and shall be at least 64kg. Design and material unrestricted.


So, get out the carbon fibre and get hold of some depleted uranium or tungsten (both much heavier than lead) or alternatively som administratium, heaviest material known to man.

Your task therefore is to construct a foil that has zero weight at the top 99% and all of the required 64kgs is in the bottom 1%.
Katrina C18/200

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maxm
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Postby maxm » Tue Nov 13, 2007 5:07 pm

Let me know if you want any administratium. I can get you an endless supply here at work. I think they manufacture the stuff here... seems to fall out of the aircon ducts. It's a risk just getting to the loo sometimes.
Max
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Mitsubishi PC Challenger auto

"It could easily be accomplished viz a coppuder"
(Dr Strangelove)


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