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Author Topic: Deck Camber  (Read 3387 times)

Tom Eccles

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Deck Camber
« on: January 04, 2008, 06:44:10 pm »

Right then gentlemen I need some advice.

I will be most grateful if anyone can let me know if there is a formula for shaping the deck supports to acheive the correct amount of camber.

The model is an A Class yacht (just in cse this has any bearing on the required amount of camber)

Many thanks

Clegg
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banjo

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Re: Deck Camber
« Reply #1 on: January 04, 2008, 07:10:40 pm »

Just to make sure we are talking about the same thing, c is a straight line between points X and Z, called the cord, the curved line would be called arc length XZ.

Assuming you know c (BEAM) (not XZ) and m then the formula would be:

r = (m² + ¼c²)/2m
 
This gives you the radius of the curve / Camber

m is the height of the of the camber.
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Tom Eccles

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Re: Deck Camber
« Reply #2 on: January 04, 2008, 08:11:38 pm »

Brilliant!!! :) :) :)

Many thanks Banjo.

Clegg
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Tom Eccles

  • Guest
Re: Deck Camber
« Reply #3 on: January 04, 2008, 08:18:23 pm »

Another question.

Is there a formula for height "M"?

For example something like .020 inches per inch of beam? or do I just make an arbitary assumption based on what looks right?

Sorry to be a pain but this is probably my last build and I want to leave my grandson something to be proud of.

Clegg
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dougal99

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Re: Deck Camber
« Reply #4 on: January 04, 2008, 10:11:26 pm »

There is a discussion here on deck camber on sailing ships:

http://cs.finescale.com/forums/839493/ShowPost.aspx

The suggestion of 1/4" for every foot of max beam is borne out in the plans for my 1/16 Brittany Trawler Marie Joseph which shows a camber of 0.2" for a beam of 9.8"

HTH

Doug
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Don't Assume Check

banjo

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Re: Deck Camber
« Reply #5 on: January 04, 2008, 10:12:21 pm »

If you are working from plans then take it from there.   If you are scratch building then you decide how much camber looks good and the formula gives the radius.  Its just maths not model making.   ;D
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Tom Eccles

  • Guest
Re: Deck Camber
« Reply #6 on: January 04, 2008, 11:15:57 pm »

dougal99 & Banjo,

Terrific, thank you both for your responses.

Best Regards

Clegg
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