Technical Talk

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Black Knight
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Re: Technical Talk

Post by Black Knight » Mon Mar 30, 2015 6:41 pm

I thought the Miss England's were black underneath???

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Renegadenemo
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Re: Technical Talk

Post by Renegadenemo » Mon Mar 30, 2015 7:05 pm

It's pretty much black... there's a few shots of it in the 2006 diary
I'm only a plumber from Cannock...

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f1steveuk
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Re: Technical Talk

Post by f1steveuk » Tue Mar 31, 2015 10:14 am

When we stripped K3 some areas looked black, some looked gunmetal/greyish black. It's supposed to reduce "grip" between the large area underneath and the water, but who knows!!
Steve Holter, UK and France, and sometimes reality....................

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Richie
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Re: Technical Talk

Post by Richie » Thu Apr 02, 2015 9:00 am

Wonder how much of that is staining from all the Conistonian sediment
Clarence come out ov zat tank at vonz !

Black Knight
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Re: Technical Talk

Post by Black Knight » Thu Apr 02, 2015 1:50 pm

Thanks Mike, looks like it's time to mask up all the models

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Renegadenemo
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Re: Technical Talk

Post by Renegadenemo » Thu Apr 02, 2015 3:20 pm

The greenish / brown is the chromate wash-coat that was applied to the bare metal before the top coat. The final finish is a dull, graphite grey.
I'm only a plumber from Cannock...

"As to reward, my profession is its own reward;" Sherlock Holmes.

'Sometimes you gotta be an S.O.B if you wanna make a dream reality' Mark Knopfler

sbt
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Re: Technical Talk

Post by sbt » Thu Apr 02, 2015 5:04 pm

Have you identified the orginal paint so you can replace it yet?

charlesd
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Re: Technical Talk

Post by charlesd » Thu Apr 02, 2015 6:36 pm

Hi all

The paint that you refer too is called Graphspeed, made by Helmsman Yacht paints back in the 60's , i used to use it on my sailing and racing dingies, it was very thick to apply and had a large amount of graphite in its make up, it was left to dry and then rubbed down with successive grades of wet and dry paper, usually ending up with about 1200 grit, the finish you could achieve was really impressive , but it was incredibly messy, and you had black stains in your hands for weeks after.
It also came off on your clothes and skin during use, being very soft, but easy too burnish, covered up a whole heap of bad boat building.

I have not seen it for many years, International Paints had something similar called Smoothy, but that was PINK!!!!

Hope that helps a little.

CharlesD

polo
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Re: Technical Talk

Post by polo » Thu Apr 02, 2015 7:58 pm

I have a note in my files that 'blacklead' was used to reduce friction on some record breakers, unfortunately the note doesn't name which boats.

f1steveuk
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Re: Technical Talk

Post by f1steveuk » Fri Apr 03, 2015 10:54 am

I know the stuff we used on K3 was Ryland, but they have gone now, and as has been said, one hell of a performance to apply.

We discussed using "normal" black/grey marine paint, and spraying her with silicone to aid unsticking, as there was never then, and not now, any intention of "record" speeds.

As for K7, I would guess only an aid to "unsticking", as once on plane, the whole surface is out of the water. Back really to the subject of how/if to keep original.
Steve Holter, UK and France, and sometimes reality....................

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