Subject: Re: [baidarka] Failure.
From: hispaniola (hispaniola@netzero.net)
Date: Sun Jan 20 2002 - 01:08:55 EST
That's my next step, graphics. I'm still undecided on what to put on, sort
of letting the boat show me her "personality" first, then I'll illustrate it
on those peaked decks. At least, until I find the gunwale material for the
Point Barrow. Can't wait.
----- Original Message -----
From: James Mitchell <mariner@seanet.com>
To: <baidarka@paddlewise.net>
Sent: Saturday, January 19, 2002 9:44 PM
Subject: Re: [baidarka] Failure.
> Actually, that was me. Said hull ("Orca") has since had all the broken
parts
> replace, new skin, new graphics (!!!) and is now living with Greg Chew in
> Seattle where it has pretty much replaced his fiberglass Nigel "Shadow"
> hull. Greg loves Orca, and is also using the Akun paddle with great
results.
>
> You are EXACTLY right about your prognosis had Orca been either kevlar or
> fiberglass. And when she fell, she it the front edge of the log stair -- a
> sharp blow, creating a very sharp break. Had that been a more rounded
> surface, I don't think anything would have broken. But then, she wouldn't
> have those new graphics.
>
> ----- Original Message -----
> From: "hispaniola" <hispaniola@netzero.net>
> To: <baidarka@paddlewise.net>
> Sent: Friday, January 18, 2002 7:43 PM
> Subject: Re: [baidarka] Failure.
>
>
> > I strongly agree with all of your points here. I erred on the side of
> > caution so many times while making my boat I have a tank. I love it
> though.
> > And looking at any of these frames, you can see how force applied to any
> > give piece will be transferred to several others, lessening the load on
> each
> > one. Makes for a really strong structure. When you add in that they
flex
> > as well to accept force, it gets even better. So far every failure
story
> I
> > have heard has been either during construction (mine too) or through
> > something pretty nasty and usually out of the water. I believe it was
Mr.
> > Brinck or Mr. Golden (my apologies if I'm wrong on any count) that said
he
> > dropped a boat from a hillside stairway, breaking the keelson and still
> > paddled it.
> > Try doing that with a glass boat. Carbon fiber and kevlar are so
> expensive
> > as to be prohibitive in my book, and the plastics tend toward weight and
> > they have their own problems too.
> > I guess what it boils down to is "man these are great boats"
> > ----- Original Message -----
> > From: John Haynes <jartist@yahoo.com>
> > To: <baidarka@paddlewise.net>
> > Sent: Friday, January 18, 2002 6:10 PM
> > Subject: Re: [baidarka] Failure.
> >
> >
> > > I tried getting a discussion going about failed
> > > gunwales but no one gave a reply so I would assume
> > > that few if any have had experience with that
> > > predicament. I just finished a greenland boat in
> > > which the masik broke while I was building my boat due
> > > to my poor design of that component. Instead of
> > > replacing the masik like I should have I pegged the
> > > heck out of it through the gunwale- taking care of the
> > > broken masik- but when I finished zealously and
> > > blindly pegging I realised I pumped so many holes in
> > > the gunwale that it was holding together by only a few
> > > fibers. I just finished up the boat anyway and it's
> > > holding up fine. You can see that the graceful curve
> > > of the gunwale on one good side and the angle that the
> > > gunwale makes at the masik on the side I thrashed
> > > trying to fix the masik however. You have to look
> > > closely and know it's there to see it but it's
> > > definately there. It bugs the crap out of me but it's
> > > not enough to effect the boat in anyway as far as
> > > hydrodynamics go. It's amazing how many mistakes one
> > > must make before one gets good at this. My *next*
> > > boat will be perfect- right?
> > > I don't want to advocate this kind of irreverant
> > > building but I think that the main conclusion that I'm
> > > trying to get to here is that the individual members
> > > in the frame take so much bending and stress just to
> > > hold the torturous shapes that if there are weaknesses
> > > the weak components break while the boat is being
> > > constructed. Once the boat, with its few dozen of
> > > parts in stress, come together the different stresses
> > > end up reinforcing each other to some extent. let's
> > > not forget that as a dynamic structure the loads are
> > > distributed among many parts. This is just a theory
> > > that I developed when I noticed how easily things
> > > break when I'm putting a boat together but how
> > > indestructable a finished boat is.
> > >
> > >
> > > --- hispaniola <hispaniola@netzero.net> wrote:
> > > > Question. Have any of you out there ever had any
> > > > catastrophic (by
> > > > catastrophic I mean something that forced you to
> > > > shore or made the boat
> > > > unusable until it was fixed) structural failures?
> > > > Like a gunwale letting go
> > > > while you were on the water or something like that?
> > > > If so, what was it? How
> > > > did it happen do you think? I'm curious. Everyone
> > > > talks about how tough
> > > > these boats are. I know that I didn't trust mine
> > > > right up until I got into it
> > > > the first time. Feels rock solid. Now I'm curious
> > > > as to what makes them
> > > > fail.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Vaya Con Dios.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > -
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