[bolger] Martha Jane balance lug draft -formulae?
Graham Cheers (MJ "Shirley Valentine") has been having sail problems.
He's recut the mizzen to near-flat, a great improvement over the full
cut originally given it, but has also discovered muddles in his main,
with no crucial dimension in any direction matching that of the plan.
(No, he didn't suspiciously measure it when he received it new--there's
a moral here.)
On his calculations, the odd measurements bring the centre of effort 6-7
inches forward, which may go a long way to indicating reasons for some
of his lee-helm difficulties from time to time.
He desires to lay down the law to his sailmaker, and get the sail recut.
He would like to know what formula(e) to use for determining roaches
etc to get the draft of a balance lug right, so that he can further lay
down the law to his sailmaker.
I've got copies of the Michalak essays (and even CoD :). Any further
references on the net? Regrettably, i no longer have access to John
Leather's "Spritsails and Lugsails"
I'll print and mail to Graham any words of wisdom which appear in
postings
Tim & Flying Tadpole
He's recut the mizzen to near-flat, a great improvement over the full
cut originally given it, but has also discovered muddles in his main,
with no crucial dimension in any direction matching that of the plan.
(No, he didn't suspiciously measure it when he received it new--there's
a moral here.)
On his calculations, the odd measurements bring the centre of effort 6-7
inches forward, which may go a long way to indicating reasons for some
of his lee-helm difficulties from time to time.
He desires to lay down the law to his sailmaker, and get the sail recut.
He would like to know what formula(e) to use for determining roaches
etc to get the draft of a balance lug right, so that he can further lay
down the law to his sailmaker.
I've got copies of the Michalak essays (and even CoD :). Any further
references on the net? Regrettably, i no longer have access to John
Leather's "Spritsails and Lugsails"
I'll print and mail to Graham any words of wisdom which appear in
postings
Tim & Flying Tadpole
Dear Frank,
For details of traditional rigging, look in various books by Hervey
Garrett Smith, esp. "The Arts of the Sailor," and (a little more
modern), "The Rigger's Apprentice" by Brion Toss.
Ford Walton
For details of traditional rigging, look in various books by Hervey
Garrett Smith, esp. "The Arts of the Sailor," and (a little more
modern), "The Rigger's Apprentice" by Brion Toss.
Ford Walton
On Thu, 27 Jan 2000, Frank San Miguel wrote:
find what you like in another John Leather book, "The Gaff Rig," which is
widely available.
Chris Crandallcrandall@...(785) 864-4131
Department of Psychology University of Kansas Lawrence, KS 66045
I have data convincingly disconfirming the Duhem-Quine hypothesis.
> I looked on bibliofind.com, bn.com and amazon.com and didn't findYou're unlikely to find it--I've searched for two years. Still, you can
> "Spritsails and Lugsails" any other books or sugguestions?
find what you like in another John Leather book, "The Gaff Rig," which is
widely available.
Chris Crandallcrandall@...(785) 864-4131
Department of Psychology University of Kansas Lawrence, KS 66045
I have data convincingly disconfirming the Duhem-Quine hypothesis.
I've just finished a 15 foot Sharpie with a 100 sqft sprit-boomed sail
and am in the process of rigging it (http://fsanmiguel.homepage.com).
I'm looking for a good book on detailed rigging for traditional small
boat rigs. I've got Chapelle's "American Small Sailing Craft",
Bolger's "103 Small Boat Rigs", a book on rigging ships and "Sailmakers
Apprentice" but they don't get into the details that I am interested
in. Things like gaskets and blocks, sheets and halyards, leathering
spars, fastening snotters, stuff like that. My plans are perfectly
adequate for rigging the boat, but I am a junkie for technical trivia,
even if I don't use it.
I looked on bibliofind.com, bn.com and amazon.com and didn't find
"Spritsails and Lugsails" any other books or sugguestions?
Frank
"c. o'donnell" <dadadat-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=2002
and am in the process of rigging it (http://fsanmiguel.homepage.com).
I'm looking for a good book on detailed rigging for traditional small
boat rigs. I've got Chapelle's "American Small Sailing Craft",
Bolger's "103 Small Boat Rigs", a book on rigging ships and "Sailmakers
Apprentice" but they don't get into the details that I am interested
in. Things like gaskets and blocks, sheets and halyards, leathering
spars, fastening snotters, stuff like that. My plans are perfectly
adequate for rigging the boat, but I am a junkie for technical trivia,
even if I don't use it.
I looked on bibliofind.com, bn.com and amazon.com and didn't find
"Spritsails and Lugsails" any other books or sugguestions?
Frank
"c. o'donnell" <dadadat-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=2002
> "chuck leinweber" <duckwork-@...> wrote:tackline.
> original article:http://www.egroups.com/group/bolger/?start=1919
> > Tim:
> >
> > I have a copy of Leather's "Spritsails and Lugsails" and a scanner.
> I would
> > be happy to send any relevant pages if you know what they are. I
> don't find
> > anything in the index under "cutting" or "shape".
> >
>
> Well, it's a great book anyway.
>
> I think the key is "cut the sail with lots of draft". Another key is
> only a supposition on my part, have the luff rope made of spectra so
> you can really tauten that sucka, and use spectra halyards and
>
"chuck leinweber" <duckwork-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=1919
I think the key is "cut the sail with lots of draft". Another key is
only a supposition on my part, have the luff rope made of spectra so
you can really tauten that sucka, and use spectra halyards and tackline.
original article:http://www.egroups.com/group/bolger/?start=1919
> Tim:I would
>
> I have a copy of Leather's "Spritsails and Lugsails" and a scanner.
> be happy to send any relevant pages if you know what they are. Idon't find
> anything in the index under "cutting" or "shape".Well, it's a great book anyway.
>
I think the key is "cut the sail with lots of draft". Another key is
only a supposition on my part, have the luff rope made of spectra so
you can really tauten that sucka, and use spectra halyards and tackline.
Tim:
I have a copy of Leather's "Spritsails and Lugsails" and a scanner. I would
be happy to send any relevant pages if you know what they are. I don't find
anything in the index under "cutting" or "shape".
Chuck Leinweber
Duckworks Magazine
http://www.duckworksmagazine.com
I have a copy of Leather's "Spritsails and Lugsails" and a scanner. I would
be happy to send any relevant pages if you know what they are. I don't find
anything in the index under "cutting" or "shape".
Chuck Leinweber
Duckworks Magazine
http://www.duckworksmagazine.com
----- Original Message -----
From: <tjfatchen@...>
To: <bolger@egroups.com>
Sent: Sunday, January 23, 2000 9:22 AM
Subject: [bolger] Martha Jane balance lug draft -formulae?
> Graham Cheers (MJ "Shirley Valentine") has been having sail problems.
> He's recut the mizzen to near-flat, a great improvement over the full
> cut originally given it, but has also discovered muddles in his main,
> with no crucial dimension in any direction matching that of the plan.
> (No, he didn't suspiciously measure it when he received it new--there's
> a moral here.)
>
> On his calculations, the odd measurements bring the centre of effort 6-7
> inches forward, which may go a long way to indicating reasons for some
> of his lee-helm difficulties from time to time.
>
> He desires to lay down the law to his sailmaker, and get the sail recut.
> He would like to know what formula(e) to use for determining roaches
> etc to get the draft of a balance lug right, so that he can further lay
> down the law to his sailmaker.
>
> I've got copies of the Michalak essays (and even CoD :). Any further
> references on the net? Regrettably, i no longer have access to John
> Leather's "Spritsails and Lugsails"
>
> I'll print and mail to Graham any words of wisdom which appear in
> postings
>
> Tim & Flying Tadpole
>
>
>
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