Re: Yonder construction sequence.
--- "jakeman19652002" <jakeman19652002@y...> wrote:
You can tease the construction sequence out
of the text, which appears to have been written by SA.
Key to this clever idea, is the torsional stiffness
given to the skeleton by the deck plate and upper sides.
Excerpting from MAIB:
" Thus, Yonder's box keel, easily as-
sembled, rolled over, and finished like a very
stout hull in its own right, would accept
straightforward insertion, permanent align-
ment and attachment of frames, bulkheads,
and floor timbers. As these are spaced closely
enough to allow strip planking right over
them, they only need temporary stiffening to
retain their transverse flatness. Once in place,
the deck plate can be added as one piece or
in sections, supported by clamp, off center-
board case, transverse and fore and aft sup-
ports.
" Since the transom is to be laminated to
final curvature on a separate jig, installing it
via the mizzen tabernacle supports puts it in
its permanent location, while the main taber-
nacle formers forward, properly braced,
would now allow hanging the completed and
prefinished plywood raised deck/bulwark
sktes. With the latter in place, the whole hull
skeleton should be torsionally stiff, starting
at the rugged box keel and locked in by deck
and ply raised deck panels. Nor can it sag fore
and aft or distort laterally laying on her side.
" Now this structure can be rolled to con-
venient degrees of heel/roll to begin the
planking process, assuming local temporary
reinforcement to stand the increasing weight
of the structure on her sides. Theoretically, at
least, it should be possible to plank, fair, fin-
ish, glass, prime, and paint one whole side at
time without conventional concerns of in-
troducing and locking in distortions from the
growing weight on just one side of her, not to
mention moving within the structure of
molds, braces and as yet undersupported keel.
> I would the construction detailsDid Romp have a plywood boxed keel?
> for YONDER if you could post some
> that be great.
You can tease the construction sequence out
of the text, which appears to have been written by SA.
Key to this clever idea, is the torsional stiffness
given to the skeleton by the deck plate and upper sides.
Excerpting from MAIB:
" Thus, Yonder's box keel, easily as-
sembled, rolled over, and finished like a very
stout hull in its own right, would accept
straightforward insertion, permanent align-
ment and attachment of frames, bulkheads,
and floor timbers. As these are spaced closely
enough to allow strip planking right over
them, they only need temporary stiffening to
retain their transverse flatness. Once in place,
the deck plate can be added as one piece or
in sections, supported by clamp, off center-
board case, transverse and fore and aft sup-
ports.
" Since the transom is to be laminated to
final curvature on a separate jig, installing it
via the mizzen tabernacle supports puts it in
its permanent location, while the main taber-
nacle formers forward, properly braced,
would now allow hanging the completed and
prefinished plywood raised deck/bulwark
sktes. With the latter in place, the whole hull
skeleton should be torsionally stiff, starting
at the rugged box keel and locked in by deck
and ply raised deck panels. Nor can it sag fore
and aft or distort laterally laying on her side.
" Now this structure can be rolled to con-
venient degrees of heel/roll to begin the
planking process, assuming local temporary
reinforcement to stand the increasing weight
of the structure on her sides. Theoretically, at
least, it should be possible to plank, fair, fin-
ish, glass, prime, and paint one whole side at
time without conventional concerns of in-
troducing and locking in distortions from the
growing weight on just one side of her, not to
mention moving within the structure of
molds, braces and as yet undersupported keel.
I would the construction details for YONDER if you could post some
that be great.
for a long time ROMP has been one of my favorit Bolger designs but
YONDER is Romp and then some, I would love to build that boat. j ---
Inbolger@yahoogroups.com, "Bruce Hallman" <brucehallman@y...> wrote:
that be great.
for a long time ROMP has been one of my favorit Bolger designs but
YONDER is Romp and then some, I would love to build that boat. j ---
Inbolger@yahoogroups.com, "Bruce Hallman" <brucehallman@y...> wrote:
> Has anybody else noticed the clever
> construction sequence idea with the
> new PB&F design 'Yonder'? They call
> for the sequence:
>
> Box keel=>ribs=>deck/uppersides=>
> before the strip planking.
>
> ...versus the traditional
>
> keel=>ribs=>planking=>deck.
>
> By putting the deck and upper sides
> on before the planking, the assembly
> gains torsional stiffness, which
> improves stability during the strip
> planking phase.
>
> I learned in my Spur II experiment
> that the plywood ribs are floppy
> as heck, and I am sure that problem
> gets exponentially worse with a bigger
> boat. Putting on the deck & upper sides
> first would make planking a much more
> failsafe proposition for an amateur builder.
>
> Not to mention that the whole box keel
> idea, with 'Yonder', is new to me. Is
> there any other strip planked Bolger
> boat with a box keel?
>
> Once again, their genius amazes me.
Has anybody else noticed the clever
construction sequence idea with the
new PB&F design 'Yonder'? They call
for the sequence:
Box keel=>ribs=>deck/uppersides=>
before the strip planking.
...versus the traditional
keel=>ribs=>planking=>deck.
By putting the deck and upper sides
on before the planking, the assembly
gains torsional stiffness, which
improves stability during the strip
planking phase.
I learned in my Spur II experiment
that the plywood ribs are floppy
as heck, and I am sure that problem
gets exponentially worse with a bigger
boat. Putting on the deck & upper sides
first would make planking a much more
failsafe proposition for an amateur builder.
Not to mention that the whole box keel
idea, with 'Yonder', is new to me. Is
there any other strip planked Bolger
boat with a box keel?
Once again, their genius amazes me.
construction sequence idea with the
new PB&F design 'Yonder'? They call
for the sequence:
Box keel=>ribs=>deck/uppersides=>
before the strip planking.
...versus the traditional
keel=>ribs=>planking=>deck.
By putting the deck and upper sides
on before the planking, the assembly
gains torsional stiffness, which
improves stability during the strip
planking phase.
I learned in my Spur II experiment
that the plywood ribs are floppy
as heck, and I am sure that problem
gets exponentially worse with a bigger
boat. Putting on the deck & upper sides
first would make planking a much more
failsafe proposition for an amateur builder.
Not to mention that the whole box keel
idea, with 'Yonder', is new to me. Is
there any other strip planked Bolger
boat with a box keel?
Once again, their genius amazes me.