Re: Prince William Sound Yawl and Lynx
Had to drop off more stuff into storage today, so I found the MAIB
issue. I see it said "this was designed as a high end, low volume
production boat"... "Cost was not supposed to be a consideration". Ouch.
I assume since it was designed for cold moulding, that it could not be
done strip built?
Paul
issue. I see it said "this was designed as a high end, low volume
production boat"... "Cost was not supposed to be a consideration". Ouch.
I assume since it was designed for cold moulding, that it could not be
done strip built?
Paul
> > You should note that cold molding is a fairly expensive way to
> build a boat.
There is the option of moulding it with a slightly thicker skin and
leaving the stringers behind when removing the hull from the mould.
This has a few benefits:
- the mould is re-usable
- the inside looks better, particularly if finished clear
- there are no places for rainwater and dirt to accumulate
- it might be a little cheaper
Howard
--- Inbolger@yahoogroups.com, "John B. Trussell"
<John.Trussell@w...> wrote:
leaving the stringers behind when removing the hull from the mould.
This has a few benefits:
- the mould is re-usable
- the inside looks better, particularly if finished clear
- there are no places for rainwater and dirt to accumulate
- it might be a little cheaper
Howard
--- Inbolger@yahoogroups.com, "John B. Trussell"
<John.Trussell@w...> wrote:
> Your choice, of course, depends largely on the kind of boat youwant to end
> up with.build a boat.
> You should note that cold molding is a fairly expensive way to
> also note that it is fairly difficult to produce a truly fair hullwith cold
> molding and many people don't like the looks of the lengthwisestringers
> inside.
Your choice, of course, depends largely on the kind of boat you want to end
up with. If your major concern is ease of construction, I would suggest
that spindle shaped boats will be easier to plank than boats with relatively
flat bottoms and very hard bilges. The Prince William Sound Yawl is an
example of a hull shape that would be very difficult to strip plank, and
PCB's chosen construction of cold molding is probably the best way to go on
boats of this type.
You should note that cold molding is a fairly expensive way to build a boat.
You first need to build a substantial mold and the planking process itself
consumes a large amount of fairly expensive epoxy. [ I once wrote to
"Woodenboat" suggesting that we adopt the British terminology of GRP (glass
re-enforced plastic) for fiberglass. That would allow us to use WRP (wood
re-enforced plastic) for cold molding. They did not respond, but then they
didn't like my idea for "arbor cement" construction either!] You should
also note that it is fairly difficult to produce a truly fair hull with cold
molding and many people don't like the looks of the lengthwise stringers
inside.
Given your specified size and the types of boats you mention, you might want
to consider PCB's "Harbinger". I have read of carvel and strip planked
Harbingers; PCB says she can be rowed fast and far, and I vaguely recall an
article about cruising in her.
Have fun.
John T
JohnT
up with. If your major concern is ease of construction, I would suggest
that spindle shaped boats will be easier to plank than boats with relatively
flat bottoms and very hard bilges. The Prince William Sound Yawl is an
example of a hull shape that would be very difficult to strip plank, and
PCB's chosen construction of cold molding is probably the best way to go on
boats of this type.
You should note that cold molding is a fairly expensive way to build a boat.
You first need to build a substantial mold and the planking process itself
consumes a large amount of fairly expensive epoxy. [ I once wrote to
"Woodenboat" suggesting that we adopt the British terminology of GRP (glass
re-enforced plastic) for fiberglass. That would allow us to use WRP (wood
re-enforced plastic) for cold molding. They did not respond, but then they
didn't like my idea for "arbor cement" construction either!] You should
also note that it is fairly difficult to produce a truly fair hull with cold
molding and many people don't like the looks of the lengthwise stringers
inside.
Given your specified size and the types of boats you mention, you might want
to consider PCB's "Harbinger". I have read of carvel and strip planked
Harbingers; PCB says she can be rowed fast and far, and I vaguely recall an
article about cruising in her.
Have fun.
John T
JohnT
----- Original Message -----
From: "pvanderwaart" <pvanderwaart@...>
To: <bolger@yahoogroups.com>
Sent: Sunday, June 05, 2005 9:39 AM
Subject: [bolger] Re: Prince William Sound Yawl and Lynx
> > I've been in a round mood the last few days after looking at all
> > his square boats. He designs really nice non-square boats too, which
> > I've sadly never noticed before.
>
> It's a matter of opinion which method of round-bottom construction is
> the easiest. The classic carvel (caulked planks, etc) became the
> standard because it was the quickest and easiest for the
> professionals. Strip planking was invented by part time Maine
> fishermen/boatbuilders and is probably easier to build, but can be
> quite time-consuming to get a fair hull. Cold molding has been
> marketed as easy because fitting each individual piece is easy, but
> it does rely on the precision of a complicated form. I suspect that
> glued, ply lapstrake is the easiest. Bolger has used it for many
> designs. The most obvious is a version of the Chebacco, but the
> original design for Fancy called for it, as well as some pretty
> pulling boats.
>
> And, of course, multi-chine falls between box and round-bottom.
>
> Peter
>
>
>
>
>
>
> Bolger rules!!!
> - no cursing, flaming, trolling, spamming, or flogging dead horses
> - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
> - Pls add your comments at the TOP, SIGN your posts, and snip away
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax:
(978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
> - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.323 / Virus Database: 267.6.1 - Release Date: 6/3/2005
>
>
> I've been in a round mood the last few days after looking at allIt's a matter of opinion which method of round-bottom construction is
> his square boats. He designs really nice non-square boats too, which
> I've sadly never noticed before.
the easiest. The classic carvel (caulked planks, etc) became the
standard because it was the quickest and easiest for the
professionals. Strip planking was invented by part time Maine
fishermen/boatbuilders and is probably easier to build, but can be
quite time-consuming to get a fair hull. Cold molding has been
marketed as easy because fitting each individual piece is easy, but
it does rely on the precision of a complicated form. I suspect that
glued, ply lapstrake is the easiest. Bolger has used it for many
designs. The most obvious is a version of the Chebacco, but the
original design for Fancy called for it, as well as some pretty
pulling boats.
And, of course, multi-chine falls between box and round-bottom.
Peter
Is there any line drawings of the Prince William Sound Yawl on the net
anywhere? My MAIB's are in storage as we are moving and I'm not sure
if I have that issue (16 23 28). I just ordered Different Boats but
that will take two weeks to get here!
I've been relooking at Bolgers designs lately as we are buying a house
with a garage, and the wife will let me use both sides to build a boat
:) I've been in a round mood the last few days after looking at all
his square boats. He designs really nice non-square boats too, which
I've sadly never noticed before.
Also anyone know where to find more info on the Lynx?
Here is a link to the yawl:
http://www.ace.net.au/schooner/PWS.htm
Here is a nice round Lynx which is beyond my skill:
http://www.reesmarine.com/view/IT1185
Thanks,
Paul
anywhere? My MAIB's are in storage as we are moving and I'm not sure
if I have that issue (16 23 28). I just ordered Different Boats but
that will take two weeks to get here!
I've been relooking at Bolgers designs lately as we are buying a house
with a garage, and the wife will let me use both sides to build a boat
:) I've been in a round mood the last few days after looking at all
his square boats. He designs really nice non-square boats too, which
I've sadly never noticed before.
Also anyone know where to find more info on the Lynx?
Here is a link to the yawl:
http://www.ace.net.au/schooner/PWS.htm
Here is a nice round Lynx which is beyond my skill:
http://www.reesmarine.com/view/IT1185
Thanks,
Paul