Steve, thats a great bit of information thanks for sharing...
Any chance you want to send us the raw data you constructed the graph
from, and perhaps a small paragraph explaining it? I'd love to put
this on the Class Website if you don't mind.
O' and the direct download for the Swift Solo Class Rules is at:
http://swiftsolo.org/classfiles/TheSwiftSoloclassrules.pdf
Or: http://swiftsolo.org/index.php/class-rules/
/Al
On Apr 20, 2007, at 6:18 PM, Steve Nichols wrote:
This spreadsheet may illustrate the bend characteristics better. It
is a comparison between the forte section and the cst section I'm
using.
Check out my Swift Solo build progress on
www.aussieswift.livesaildie.com
----- Original Message ----
From: "BDally6107@xxxxxxx" <BDally6107@xxxxxxx>
To: wojtek_pagacz@xxxxxxxxx; swiftsolo@xxxxxxxxxxxx
Sent: Saturday, 21 April, 2007 1:20:28 AM
Subject: Re: Sails and rig
Wojtek,
A great place to start would be to have a look at the class rules.
http://www.single-handedskiffs.com/rulesofficers.html
You should be able to get the basic measurements from there. The
jib clew typically has a clew board with three holes in it like the
49er. The location of the clewboard is critical and it may be
better to visit someone in your area that has a suit of sails to
determine the actual location and angle.
Mast bend can vary a bit depending on whether the builder chose to
sand and refinish the mast before rigging it. It may be best to
get your mast, decide if you're going to sand and put your own
finish on it, and then test it with the mast track on. Attached is
an xl spreadsheet which will provide a good starting point.
We vary/change our mast a rake a fair amount--depending on the wind/
wave conditions (there is no set rule). Our kites are affected a
great deal by mast rake. Generally we are raking aft in heavy air
for the typical benefits (it loosens the caps and lowers, loosens
the jib leech, and tightens the kite luff--driving the fullness
forward). We do have a rather standard rake starting point buy
you'd need you boat finished to make that work (it is a measurement
from the transom bar top to the tip of the mast with the cap
pressure off. I'll dig that number out for you)
Best regards,
Bram
In a message dated 4/20/2007 6:26:52 A.M. Pacific Daylight Time,
wojtek_pagacz@xxxxxxxxx writes:
Hi,
I'm trying to design myself some sails. I dont have the boat built
yet and the rig is on it's way. I need some dimensions. Like luff,
foot, forestay lengths. Mast rake and mast bend for the forte
spar. Clew location for jib. The E, P, J. Any of this
information would be greatly appreciated.
cheers,
Wojtek
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