Re: [Paddlewise] efficiency of multi-chines (was: perfect..... kit boat)

From: 735769 <735769_at_ican.net>
Date: Wed, 8 Dec 1999 15:40:29 -0500
Kevin wrote;

(SNIP)

>
> If this is true, then why did the Aleut Eskimos build boats with
> multi-chine hulls? I would suggest they may have thought multi-chine hulls
> were better than rounded hulls, and I don't believe for a second that they
> didn't have the technology to build a smoothly rounded hull. I am of the
> opinion that they arrived on their classic baidairka design after
> centuries of rigorous testing that would rival anything that we do today.
> Note that I am not saying necessarily that multi-chine hulls are more
> efficient than rounded hulls, but I am saying that they might  be better
> in an overall sense.

Any ideas on how they would build a smooth round bilge hull? I alos have in
interest in the test protocol. I have always wondered how they knew when
they had achieved the best trade-off between wavemaking and friction
resistance.


> > Strip-built boats avoid the chine problem, but at the addition of
considerably
> > more work than stitch-and-glue plywood kits.  Guillemot Kayaks
> > (http://www.guillemot-kayaks.com/) has a great Web site, complete with a
> > builder's Web board for trading hints and insults <g>.
> >
> > Others will chime in on chines and their value as a turning edge --
Whilden,
> > where are you?
> >
>
> I am not convinced that the presence of chines is all that important for
> turning. Rather it is the hull shape that matters (although I have few
> ideas as to how it matters). I have paddled plenty of rounded hull boats
> that carve turns admirably, and several hard chines boats that turn
> listlessly. I do believe that all else being equal, chines may enhance
> turning in a secondary way.

Aren't the chines a part of the "hull shape"?


Cheers,

John Winters
Redwing Designs
Web site address, http://home.ican.net/~735769

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Received on Wed Dec 08 1999 - 12:42:47 PST

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