Re: [bolger] Re: info on a sailing rig in BWAOM
If it's made of solid Douglas fir (~31 lbs/ft^3) (500 kg/m^3),
the 2.5" dia, 12' 9" gaff (yard) of a Chebbaco would weigh 13.5 lbs.
(I expect to use a birds-mouth (hollow) construction to reduce that.)
It will be falling about 16'. In a vacuum that would give it a velocity of
about 32 fps or 22 mph.
The sail (parachute) should slow its fall, not speed it.
I don't say I'll never drop it, but it's not a hazard I lose much sleep
over.
Roger
derbyrm@...
http://derbyrm.mystarband.net
the 2.5" dia, 12' 9" gaff (yard) of a Chebbaco would weigh 13.5 lbs.
(I expect to use a birds-mouth (hollow) construction to reduce that.)
It will be falling about 16'. In a vacuum that would give it a velocity of
about 32 fps or 22 mph.
The sail (parachute) should slow its fall, not speed it.
I don't say I'll never drop it, but it's not a hazard I lose much sleep
over.
Roger
derbyrm@...
http://derbyrm.mystarband.net
----- Original Message -----
From: "Nels" <arvent@...>
> --- Inbolger@yahoogroups.com, "Roger Derby" <derbyrm@s...> wrote:
> > There have been several references to "the yard crashing down."
> > Just what size spars are we talking about here?
> >
> > Roger
>
> Hi Roger,
>
> It would depend on the size of the boat. Often the yard is as long
> as the mast and PCB tells us it should be stiff. Plus you would have
> the weight of the sail that is attached to it.
>
> So for example if you have one on a CHEBACCO and are reefing and the
> halyard slips out of your hand, the yard could come sliding down the
> mast and hit the boom fitting a pretty good wack and then the other
> end might go bouncing back downwind and give you a pretty good wack.
>
> Little chance of it actually happening with sure handed sailors like
> you and I but it is something to consider if you lend out the boat to
> a newbie or something:-)
>
> Cheers, Nels
>
>
--- Inbolger@yahoogroups.com, "Roger Derby" <derbyrm@s...> wrote:
It would depend on the size of the boat. Often the yard is as long
as the mast and PCB tells us it should be stiff. Plus you would have
the weight of the sail that is attached to it.
So for example if you have one on a CHEBACCO and are reefing and the
halyard slips out of your hand, the yard could come sliding down the
mast and hit the boom fitting a pretty good wack and then the other
end might go bouncing back downwind and give you a pretty good wack.
Little chance of it actually happening with sure handed sailors like
you and I but it is something to consider if you lend out the boat to
a newbie or something:-)
Cheers, Nels
> There have been several references to "the yard crashing down."Just what
> size spars are we talking about here?Hi Roger,
>
> Roger
It would depend on the size of the boat. Often the yard is as long
as the mast and PCB tells us it should be stiff. Plus you would have
the weight of the sail that is attached to it.
So for example if you have one on a CHEBACCO and are reefing and the
halyard slips out of your hand, the yard could come sliding down the
mast and hit the boom fitting a pretty good wack and then the other
end might go bouncing back downwind and give you a pretty good wack.
Little chance of it actually happening with sure handed sailors like
you and I but it is something to consider if you lend out the boat to
a newbie or something:-)
Cheers, Nels
There have been several references to "the yard crashing down." Just what
size spars are we talking about here?
Roger
size spars are we talking about here?
Roger
----- Original Message -----
From: "Nels" <arvent@...>
> --- Inbolger@yahoogroups.com, "bobffej" <bobffej@y...> wrote:
> > Hello All.
> >
> > I noticed an unusual sailing rig in BWAOM as I was browsing through.
>
<snip>
> Bolger calls the solent "a true lug with one halyard and no
> attachment of the luff of the sail to the mast. It differs from other
> lugs in having the yard slung ABOVE it's center of gravity." (This of
> course keeps it pointing upright.) It's main advantage over the leg-o-
> mutton is the shorter mast, and the ability to lower the height of
> the yard when reefing, or going under a bridge. Disadvantage is
> having a possibilty of the yard come crashing down and hitting the
> boom.
<snip>
It's a Solent rig I believe that is shown on the 25 foot lapstrake
Chebacco. Mr. Bolger also used this rig on the Common Sense skiff
that he designed for the "perfect skiff" competition in Wooden Boat
several years ago. I think the sail was about 75 square feet. Plans
for it were available from Common Sense Designs. I just took a look
at Common Sense Boats and they don't have plans for this boat nor
could I find any internet archive of the Common Sense Designs
website. Perhaps someone has the old CSD catalog and can scan the
sail plan.
Romayne
Chebacco. Mr. Bolger also used this rig on the Common Sense skiff
that he designed for the "perfect skiff" competition in Wooden Boat
several years ago. I think the sail was about 75 square feet. Plans
for it were available from Common Sense Designs. I just took a look
at Common Sense Boats and they don't have plans for this boat nor
could I find any internet archive of the Common Sense Designs
website. Perhaps someone has the old CSD catalog and can scan the
sail plan.
Romayne
>Rather than "...having a possibilty of the yard come crashing down..." theI'm finishing up Birdwatcher spars for the Solent Lug and eventually can
>solent lug is easier to control than any of the other (balanced, standing,
>dipping) lugs since its yard hangs vertically from the halyard. It is the
>other lug yards which can dive 'peak first'.
post a report when the boat is sailing...
--
Craig O'Donnell
Sinepuxent Ancestors & Boats
<http://freepages.genealogy.rootsweb.com/~fassitt/>
The Proa FAQ <http://boat-links.com/proafaq.html>
The Cheap Pages <http://www.friend.ly.net/~dadadata/>
Sailing Canoes, Polytarp Sails, Bamboo, Chinese Junks,
American Proas, the Bolger Boat Honor Roll,
Plywood Boats, Bamboo Rafts, &c.
_________________________________
-- Professor of Boatology -- Junkomologist
-- Macintosh kinda guy
Friend of Wanda the Wonder Cat, 1991-1997.
_________________________________
A couple of observations;
I've read that big spritsails are tough to handle. Even on a small boat
scale I don't see the peak sprit as the most easily managed spar in tricky
conditions. And then there's the whole reefing question.
Rather than "...having a possibilty of the yard come crashing down..." the
solent lug is easier to control than any of the other (balanced, standing,
dipping) lugs since its yard hangs vertically from the halyard. It is the
other lug yards which can dive 'peak first'.
cheers
Derek
I've read that big spritsails are tough to handle. Even on a small boat
scale I don't see the peak sprit as the most easily managed spar in tricky
conditions. And then there's the whole reefing question.
Rather than "...having a possibilty of the yard come crashing down..." the
solent lug is easier to control than any of the other (balanced, standing,
dipping) lugs since its yard hangs vertically from the halyard. It is the
other lug yards which can dive 'peak first'.
cheers
Derek
--- Inbolger@yahoogroups.com, "bobffej" <bobffej@y...> wrote:
I tried twice to scan the text from the book for you - but it did not
work. Something wrong here. Anyway you have to get the book because
the rigs are often described in reference to the previous ones.
Bolger calls the solent "a true lug with one halyard and no
attachment of the luff of the sail to the mast. It differs from other
lugs in having the yard slung ABOVE it's center of gravity." (This of
course keeps it pointing upright.) It's main advantage over the leg-o-
mutton is the shorter mast, and the ability to lower the height of
the yard when reefing, or going under a bridge. Disadvantage is
having a possibilty of the yard come crashing down and hitting the
boom.
A rather extreme example of this rig is shown in the cartoon for the
one-person liveaboard which can be viewed at Bolger2 in the MARINA
CRUISER file.
I think the spritsail rig became more popular as it allows more sail
area to be spread on the same sized mast and spars.
Cheers, Nels
> Hello All.Hi Jeff,
>
> I noticed an unusual sailing rig in BWAOM as I was browsing through.
I tried twice to scan the text from the book for you - but it did not
work. Something wrong here. Anyway you have to get the book because
the rigs are often described in reference to the previous ones.
Bolger calls the solent "a true lug with one halyard and no
attachment of the luff of the sail to the mast. It differs from other
lugs in having the yard slung ABOVE it's center of gravity." (This of
course keeps it pointing upright.) It's main advantage over the leg-o-
mutton is the shorter mast, and the ability to lower the height of
the yard when reefing, or going under a bridge. Disadvantage is
having a possibilty of the yard come crashing down and hitting the
boom.
A rather extreme example of this rig is shown in the cartoon for the
one-person liveaboard which can be viewed at Bolger2 in the MARINA
CRUISER file.
I think the spritsail rig became more popular as it allows more sail
area to be spread on the same sized mast and spars.
Cheers, Nels
YES it is!
Bruce Hallman <bruce@...> wrote:--- Derek Waters wrote:
rig is one of the rigs PCB
specs for use on Birdwatcher
if you find the sprit sail
to be undercanvased.
Bolger rules!!!
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Bruce Hallman <bruce@...> wrote:--- Derek Waters wrote:
> a Solent Lug rigIf I am not mistaken, this
rig is one of the rigs PCB
specs for use on Birdwatcher
if you find the sprit sail
to be undercanvased.
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
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[Non-text portions of this message have been removed]
--- Derek Waters wrote:
rig is one of the rigs PCB
specs for use on Birdwatcher
if you find the sprit sail
to be undercanvased.
> a Solent Lug rigIf I am not mistaken, this
rig is one of the rigs PCB
specs for use on Birdwatcher
if you find the sprit sail
to be undercanvased.
Hi Jeff
The 25 foot Lapstrake is shown with a Solent Lug rig (#19 in 103 Rigs). I've
used this rig, and happily promoted it on the is group and elsewhere. As you
note, it is not a gunter, with which it is sometimes confused.
It avoids the gunter's potential for binding, and its need for sliding
hardware - this is essentially a 'stick and string' rig. If you already have
an 'Instant Boat' style sprit boomed 'leg of mutton' this is an easy way to
experiment with shorter masts. Bolger mentions it being competitive with
advanced gaff and primitive marconi rigs. He notes that the Solent lug has
the same defects as other 'leg of mutton' sails in cat-boats - sail too high
or boom too long for convenience. The rig reefs easily and works well with a
sprit boom. Bolger points out that if the yard is too bendy it will add
draft to the sail as reefs are taken in. This last can be avoided with
rigging, but a stiff yard works just as well.
hope this helps
cheers
Derek
The 25 foot Lapstrake is shown with a Solent Lug rig (#19 in 103 Rigs). I've
used this rig, and happily promoted it on the is group and elsewhere. As you
note, it is not a gunter, with which it is sometimes confused.
It avoids the gunter's potential for binding, and its need for sliding
hardware - this is essentially a 'stick and string' rig. If you already have
an 'Instant Boat' style sprit boomed 'leg of mutton' this is an easy way to
experiment with shorter masts. Bolger mentions it being competitive with
advanced gaff and primitive marconi rigs. He notes that the Solent lug has
the same defects as other 'leg of mutton' sails in cat-boats - sail too high
or boom too long for convenience. The rig reefs easily and works well with a
sprit boom. Bolger points out that if the yard is too bendy it will add
draft to the sail as reefs are taken in. This last can be avoided with
rigging, but a stiff yard works just as well.
hope this helps
cheers
Derek
Hello All.
I noticed an unusual sailing rig in BWAOM as I was browsing through.
It was on one of the alternate chebbaco designs as well as another
in the same section of the book(can't remember the design).
This rig looks to be a cross between gaff and bermuda rigs...a yard
is hauled up and sits flush against the mast with about two thirds
of its length above the top of the mast. Yet there is no bracket
like a gunter has.
This rig looks like a interesting alternative to the tall mast of
the leg'o'mutton sprit. I like the reduced mast spar lengths and
the ability to reef.
I was wondering if anyone had ever used a rig of this type. Also,
is this rig in Bolger's 100/3 rigs and if so could we have a summary
of his description(or scan). Is there a protocol/formula/algorithm
for scaling down a rig of certain dimension?
Thanks all for your inspiration. Just got Dave Carnell's
plans...looking forward to starting a build in a few months when
winter comes to a close(It's been pretty darn cold up here near
Boston)
Jeff
I noticed an unusual sailing rig in BWAOM as I was browsing through.
It was on one of the alternate chebbaco designs as well as another
in the same section of the book(can't remember the design).
This rig looks to be a cross between gaff and bermuda rigs...a yard
is hauled up and sits flush against the mast with about two thirds
of its length above the top of the mast. Yet there is no bracket
like a gunter has.
This rig looks like a interesting alternative to the tall mast of
the leg'o'mutton sprit. I like the reduced mast spar lengths and
the ability to reef.
I was wondering if anyone had ever used a rig of this type. Also,
is this rig in Bolger's 100/3 rigs and if so could we have a summary
of his description(or scan). Is there a protocol/formula/algorithm
for scaling down a rig of certain dimension?
Thanks all for your inspiration. Just got Dave Carnell's
plans...looking forward to starting a build in a few months when
winter comes to a close(It's been pretty darn cold up here near
Boston)
Jeff