[bolger] Re: Micro Sails
Really useful information for all micro builders! Thanks, Bernie
Francisco.
Bernie Wolfard wrote:
Francisco.
Bernie Wolfard wrote:
>
> All cat-yawl rigs will sail like they are dragging a bucket if the
> main sail isn't cut correctly. I wish I could give you the seam taper
> measurements, but alas, I don't know them. Here, however, are the
> general guidelines I gave the old CSD sail maker, and would share
> with another sail maker who asked. These are really from Mike
> O'Brien, assistant editor @ WoodenBoat Magi.
>
> The main should be cut like a Blade (a type of genoa) with the
> largest amount of camber you can get without wrinkles in the sail,
> the deepest point of camber about 1/3 of the way back from the luff.
> This is farther back and much more camber than a sloop sail. The
> trailing edge of the sail (leach) is absolutely flat from the deepest
> point of the camber to the leach.
>
> The mizzen is simple, just cut it flat. It is a steering and balance
> sail, not a driving sail.
You roll the sail up on both sides of the seam.
----- Original Message -----
From: "Roger Dewhurst" <dewhurst@...>
To: <bolger@egroups.com>
Sent: Wednesday, May 24, 2000 9:44 PM
Subject: Re: [bolger] Re: Micro Sails
>
> How do you manage to sew across the full width of the sail with an
ordinary
> sewing machine?
>
> Roger.
>
>
> ------------------------------------------------------------------------
> Old school buds here:
>http://click.egroups.com/1/4057/10/_/3457/_/959310365/
> ------------------------------------------------------------------------
>
>
Daniel
I've used SC4 for a while, and I've of course produced files for both
Micro sails. I might think to post them on my web site.
For what I know from several sources, the main has to be pretty full,
i.e. with a quite significant camber, while the mizzen should be
fairly flat.
SC4 gives you the possibility of setting up the camber in terms of
depth and longitudinal position. Fairly easy to do.
Le me know if I can be of more help
Best, Pippo
I've used SC4 for a while, and I've of course produced files for both
Micro sails. I might think to post them on my web site.
For what I know from several sources, the main has to be pretty full,
i.e. with a quite significant camber, while the mizzen should be
fairly flat.
SC4 gives you the possibility of setting up the camber in terms of
depth and longitudinal position. Fairly easy to do.
Le me know if I can be of more help
Best, Pippo
Pete,
sewing machine?
Roger.
> If you have any questions, please feel free to ask. I make my ownHow do you manage to sew across the full width of the sail with an ordinary
>sails to this day. The key items to buy are a good pair of scissors,
>a good 6" ruler with a metric scale, an electric soldering iron with
>a flat tip, a long spool of string, thumbtacks, and a push-type
>staple puller (not the claw kind).
>
> Battens can be scarfed up from left over plywood from building
>your boat, or rip some spruce 2x's and scarf them together. They
>don't have to be straight, but they MUST bend in nice smooth, fair
>curves. The extra length will enable you to get the curves fair at
>the corners of the sail, because you can move the battens end around.
>
> Another great book about sailmaking is "The Sailmaker's
>Apprentice", from International Marine. This is the best book I've
>found.
>
> Tips:
>
>Use pencil to mark things
>
>Staple the luff, leech, and foot tapes to the sail before sewing, or
>the folded tabling
>
>Use the bigest needle that will fit your sewing machine
>
>Definitely install a leech line to stop it from fluttering
>
>Cut the leech with a hollow in it, the same reason as above
>
>Walk the needle through tough layers by hand - you may have to punch
>the needle through with repeated stabs
>
>Use double-sided tape to stick the corner and reef patches down
>before sewing
sewing machine?
Roger.
Thanks John!
I thought I was going crazy trying to figure that one out.. As they say, now
that I know it looks obvious!
I have used the Sailcut programme to generate this file for the Mainsail..
(See attached file: Microsm.sc4)
Could you (or anybody interested) look at it for me and pass any comments on
shape etc.. My project was meant to be a joint effort with my brother, who had
to move away shortly after I bought all the wood to build my Micro. This site
has therefore proved to be a massive amount of support, encouragement and
inspiration to me. I have had a picture of Banty (as well as Peter Lenihan's
boat) as my wallpaper on my machine here for some time.
Sailcut can be downloaded here
http://users.bart.nl/~jmlaine/sailcut/en-index.html
I work in the middle of London, and I am thinking of wandering past the
chandlers and picking up some Epoxy today on the way to the railway station.
Regards
Daniel
I thought I was going crazy trying to figure that one out.. As they say, now
that I know it looks obvious!
I have used the Sailcut programme to generate this file for the Mainsail..
(See attached file: Microsm.sc4)
Could you (or anybody interested) look at it for me and pass any comments on
shape etc.. My project was meant to be a joint effort with my brother, who had
to move away shortly after I bought all the wood to build my Micro. This site
has therefore proved to be a massive amount of support, encouragement and
inspiration to me. I have had a picture of Banty (as well as Peter Lenihan's
boat) as my wallpaper on my machine here for some time.
Sailcut can be downloaded here
http://users.bart.nl/~jmlaine/sailcut/en-index.html
I work in the middle of London, and I am thinking of wandering past the
chandlers and picking up some Epoxy today on the way to the railway station.
Regards
Daniel