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Re: SC20 loose forestay tangs? [Re: davefarmer] #92644
01/17/07 05:56 AM
01/17/07 05:56 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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Dear Dave,

that would be really very helpful!

By the way, where did you get them from? I am familiar with some people keeping a damaged hull in storage after replacement with a new one, but this bow story seems to be a more special one! ;-)

Anyhow, if you can get an idea about the construction of the tangs and bulkhead, would really be great.

If any other SC20 sailor is reading this thread, let me know if anyone else noticed similar problems or is also sailing with loose tangs since years :-)


Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
-- Have You Seen This? --
Re: SC20 loose forestay tangs? [Re: Dirk] #92645
01/17/07 09:49 PM
01/17/07 09:49 PM
Joined: Apr 2004
Posts: 713
WA, ID, MT
davefarmer Offline
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I bought a very badly damaged 20, that had both hulls split lengthwise, supposedly on the trailer. I never did figure out how so much damage could have occurred. I just bought it for parts, mast, rigging, rudders and trl. About 6' of each bow was intact, so I just cut them off with a sabre saw. Keep reminding me, I'd already forgotten my offer. It's dark when I leave in the morning for work, and when I get home. That leaves the weekends when I'm usually off to the backcountry if conditions permit.

dave 509 276 6355 lightguyz@hotmail.com

to davefarmer [Re: davefarmer] #92646
02/21/07 09:12 AM
02/21/07 09:12 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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dave, still snow on the bows? :-)

would really appreciate if you could find out what the meaning in terms of construction principle is of

"The older SC20's had a vertical transverse bulkhead that supports the forestay tangs."

Thanks Dirk


Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
Re: SC20 loose forestay tangs? [Re: Dirk] #92647
02/21/07 11:52 PM
02/21/07 11:52 PM
Joined: Apr 2004
Posts: 713
WA, ID, MT
davefarmer Offline
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Dirk,
I stuck my head in there but can see anything useful. There's a big block of foam just aft of the tang (and bulkhead?) that obscures everything. Sorry!
I bought a badly damaged 20 that had numerous longitudinal cracks that the previous owner said were caused during trailering (hard to picture). Paid $400 and got a great mast, rudders and a Trailex alum trl I sold to a guy in Socal for $450. And two 6' bow sections.
I've had the plate around the tang come loose, but the tangs themselves have always seemed solid.

dave

Re: SC20 loose forestay tangs? [Re: davefarmer] #92648
02/22/07 02:14 AM
02/22/07 02:14 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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dear dave,

thanks for your efforts anyhow!

by the way, did you ever lay your boat on the side (capsize) on the beach/land ? its an easy issue with an F18 or F20 but wondering a little by the width and weight of the SC20... have to replace the spin halyard block and I am to lazy to lower the mast... ;-)


Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
Re: SC20 loose forestay tangs? [Re: Dirk] #92649
02/23/07 10:01 AM
02/23/07 10:01 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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Dirk  Offline OP
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Shanghai, China
done without problems.


Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
update on progress [Re: Dirk] #92650
04/11/07 06:53 AM
04/11/07 06:53 AM
Joined: Jul 2005
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Shanghai, China
Dirk Offline OP
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It had been a while but things are moving fast now.
New shaping took place the last three days and while I am typing the fibreglass work is moving along.

Thanks again to everyone who shared his knowledge. It did feed the motivation :-)

Photoshop is something, getting there is everything... ;-)

Attached Files
104370-3steps.jpg (275 downloads)

Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
Re: update on progress [Re: Dirk] #92651
04/11/07 07:08 AM
04/11/07 07:08 AM
Joined: May 2003
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West coast of Norway
Rolf_Nilsen Offline
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West coast of Norway
You are a brave man Dirk. Looking very much forward to hearing how this change the boats characteristica.

Re: update on progress [Re: Dirk] #92652
04/11/07 11:19 AM
04/11/07 11:19 AM
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Posts: 984
2017 F18 Americas Site
Dan_Delave Offline
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2017 F18 Americas Site
Dirk:

That is looking good. I was wondering where you were with it.

Later,
Dan

Re: update on progress [Re: Dan_Delave] #92653
04/12/07 06:23 PM
04/12/07 06:23 PM
Joined: Sep 2006
Posts: 613
New Hampshire, USA
windswept Offline
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Dirk,

Nice going. You've come a long way to the present. good Luck.

tom


Tom Siders
A-Cat USA-79
Tornado US775
one week later [Re: windswept] #92654
04/14/07 09:55 AM
04/14/07 09:55 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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Dirk  Offline OP
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Shanghai, China
Glassfibre work is also mostly done. Soon the hulls will get new gelcoat finish. This will surely add some noticeable weight (maybe up to 10kg/hull) so I wonder if it makes sense to try to sand as much as possible from the old gelcoat away to save weight? any comments?

Attached Files
104699-DSC00009s.jpg (214 downloads)

Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
made in china [Re: Dirk] #92655
04/14/07 10:00 AM
04/14/07 10:00 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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Shanghai, China
it's interesting how a nose changes a boat... the old lady (born 1980) doesn't feel that old any more :-)

Attached Files
104701-DSC00008-s.jpg (199 downloads)

Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
Re: made in china [Re: Dirk] #92656
04/14/07 10:45 AM
04/14/07 10:45 AM
Joined: May 2002
Posts: 3,114
BANNED
MauganN20 Offline
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Hey Dirk, that looks great!

Talk to jake about re-gelcoating. He did the blue N20 with a new shot of Gelcoat. He can probably give you a good indication of how much weight it added.

Re: made in china [Re: MauganN20] #92657
04/14/07 06:54 PM
04/14/07 06:54 PM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline
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have you considered a two-pack polyurethane paint job instead of gelcoat?

Re: made in china [Re: ncik] #92658
04/14/07 07:33 PM
04/14/07 07:33 PM
Joined: Jun 2001
Posts: 305
toronto, canada
B
basket.case Offline
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Posts: 305
toronto, canada
paint the boat. dont try to re gel it.

Re: made in china [Re: basket.case] #92659
04/14/07 08:08 PM
04/14/07 08:08 PM
Joined: Apr 2002
Posts: 695
Ft. Pierce, Fl. USA
Seeker Offline
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Use Duratech with the gel coat and it will turn out super..

Regards,
Bob

Re: made in china [Re: ncik] #92660
04/15/07 02:06 AM
04/15/07 02:06 AM
Joined: Jun 2001
Posts: 9,582
North-West Europe
Wouter Offline
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I have that on my boat and its holds up extrememly well. A few times a year my boat gets sandblasted when its in its beach side paarking, the aluminium will sometimes get discoloured by this but the paint job stayed on beautifully.

I would serious consider the two-pack polyurethane paint job very seriously for the new SC20 you have Dirk.

Wouter


Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: one week later [Re: Dirk] #92661
04/15/07 05:42 AM
04/15/07 05:42 AM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline
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ncik  Offline
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I would paint it with a two-pack polyurethane, not gelcoat.

Re: made in china [Re: Dirk] #92662
04/15/07 06:39 AM
04/15/07 06:39 AM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
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Jake  Offline
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Agreed - paint it.


Jake Kohl
Re: made in china [Re: Jake] #92663
04/15/07 07:18 AM
04/15/07 07:18 AM
Joined: Jul 2005
Posts: 185
Shanghai, China
Dirk Offline OP
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Dirk  Offline OP
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Shanghai, China
the point is I do not have mucht trust into the paint which is available here. I sailed a couple of painted boats and got a few of them professional repainted with the right paints, still none of them was as durable as gelcoat...

in contrast they do a perfect gelcoat job over here. the redid a couple of our daggerboards and they turn out like new. we gave them a old 470 and they redid the whole deck and bottom and it also looks like a new boat. so I know with gelcoat I know what I get. the only worry ist the weight penalty. the boatsyard estimated 12 kg each hull...
but I assume that is the quantity they need but a significant part of it will be lost when it dried? can anyone comment on this?

jake, maugan mentioned you did it before?


Dirk A-Cat GER 5 F-16 CHN 1 (sold) SC 6.5 CHN 808
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