Date: Mon, 15 Feb 1999 08:53:15 -0500
From: Gardner Congdon <congdorg@bc.edu>
To: baidarka@lists.intelenet.net
Subject: Re: baidarka Baidarka rib jig
I'm not really sure how it will work in the bow and stern ends. I just
decided to replace all the ribs I had bent by hand and will start this
tonight or tomorrow. I hate to redo something, but I'm just not happy
with the hull shape. It seems as close as I could get them by eye, they
still were pulling in or pushing out the stringers in too many places.
I've noticed that the stringers in Bruce Lemon's boats, and those in the
Spirit Line boats are thicker than those in Brinck's book. I suspect
that this helps muscle recalcitrant ribs into shape. I'm betting too
that over time these things straighten themselves out some.
Despite the extra work, I am curious to see how the jig performs.
-Gardner
Ve Smith wrote:
>
> I built something similar to this (but a lot cruder) to build my last
> boat. It worked well, but I had to make two forms to accomodate the
> difference in rib shape from the center sections to the ends. How did
> you accomplish it?
>
> I'm working on a folder right now, but plan to build a frame and
> stringer form for my next traditional boat and bend all the ribs into
> it. I think this method will result in a net reduction in build
> time(despite the time required to build the jig), allow me to bend all
> the ribs in one session, and result in fairer rib sections. I should
> also be able to trim and install them in one shot and not have to put
> up in the size difference between wet and dry ribs. I'll let you know
> how it turns out.
>
> ---Gardner Congdon <congdorg@bc.edu> wrote:
> >
> > Phillip Jacobs asked about my jig for bending ribs, so I thought I'd
> > post it for the whole group. My reasoning for this jig comes from the
> > difficulty of the novice rib bender (me!) in getting consistent bends
> > with dimensional rib lumber, thus adding to the difficulty of
> achieving
> > a fair hull. I believe this design will address this problem and be
> > superior to other, less adjustable jigs (specifically in that the form
> > is changed quickly and easily for each rib).
> > I welcome your comments.
> > http://www.gis.net/~gardner/image.htm
> > -Gardner Congdon
> >
> > Philip Jacobs wrote:
> > >
> > > In message <36C2E094.409D6850@bc.edu> writes:
> > > > Just been steam bending in the basement. Came up with a design
> for a
> > > > simple adjustable jig for bending oak ribs which I hope will
> ensure
> > > > better consistency and a more easily faired hull. I will
> definitely use
> > > > this next time. I'll be putting a web page together soon which
> will
> > > > cover my experience using Wolfgang Brinck's book, pointers for
> those on
> > > > their first attempt, and what I'd do differently next time.
> > >
> > > Gardner,
> > >
> > > I curious about your adjustable jig. Is it something that you can
> easily
> > > describe?
> > >
> > > Philip Jacobs
> > > jaco0253@gold.tc.umn.edu
> > > (651) 699-7938
> >
> > --
> > Gardner Congdon
> > Assistant Director, Program Development
> > Office of Research Administration
> > Boston College
> > (617)552-2248
> > gardner.congdon@bc.edu
> >
>
> _________________________________________________________
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-- Gardner Congdon Assistant Director, Program Development Office of Research Administration Boston College (617)552-2248 gardner.congdon@bc.edu