DK13

[19bgm58]

I want to build a DK13 but I think 13ft. is a little short. I don't know much about designing boats but I was wondering if I lengthened the boat would it work if I changed all the other dimensions but the same percentage? Does reciprocity work in boat designs?

[paladin]

NOPE! This has been covered before on these pages.....several times.

[Ron Williamson]

I don't mean to be contrary,(it's my nature)but,YES!you can.People do it all the time with small boat designs.
R

[ken mcclure]

People drive the car, talk on the phone and eat their lunch all at the same time too, but ..........

[htom]

It doesn't work like you seem to think that it will.

Say you have a boat 16' long x 4' wide x 2' deep, and enlarge it 25%, making it 20' long, 5' wide, and 30" deep.

The total volume goes from (very roughly estimating) 16 x 4 x 2 x 0.55 to 20 x 5 x 2.5 x 0.55 -- from 70.4 cubic feet to 137.5 cubic feet, a 95% increase rather than 25%.

You can usually "stretch" a boat in length ONLY by 10% or so, making (say) a 13' boat into a 14' or 14'4" or 14'6", but that's about the limit.

If you're looking for a boat that size (or larger) you'd be better off looking for plans drawn to that size.

[Lazy Jack]

I have built both the DK-13 and Chesepeake Light Craft's 'Yare' Both are nearly identicle in construction except that the yare eliminates the solid wood keelson by using a couple layers of fiberglass tape instead. The yare, however is longer than the DK-13 and is light and fast fast fast. I recommend it highly

[19bgm58]

Hey, paladinsfo. I'm a newbie. Cut me some slack. Please?

[Art Read]

Don't think he meant to pull you up short, it's just that this HAS been talked about quite a bit here, and you can find most of what you probably want to know regarding the reasoning, pro and con, by reading those other "threads". I think what Paladinfo was sugesting was that you look them up. If you look up in the upper right corner of this page, you'll find a search feature. Just enter "scaling up", "station molds" or maybe "increasing length" and see what pops up. Good luck!

[Tim B]

I for one like it when people ask questions that have been answered already. Here are afew reasons why:

1. I learn alot from questions that others ask that I won't ask because I'm not dealing or thinking about that issue right now.

2. If we all used the search engines to get our answers, than there would not be as much boat stuff left to talk about. Maybe that's why miscellanium has so much non boat stuff.

3. I like hearing about the boat stuff other people are working on regardless of the stage of the project or the skill level of the individual.

So ask away. There are no dumb questions, only dumb answers.