Re: Tiller Layup & Centerboard and Rudder layup
from [Greg Ryan] [Bookmark Link][Original]
To: <swiftsolo@xxxxxxxxxxxx>
Subject: Re: Tiller Layup & Centerboard and Rudder layup
From: "Greg Ryan" <gregoryrryan@xxxxxxxxxxx>
Date: Thu, 29 Dec 2005 11:58:09 -0500
Cc: "Mark" <mark@xxxxxxxxxxxxxxxxxxxxxx>
References: <02f701c60c94$75760600$0200a8c0@markkrtsykx0qx>
54 inches is a guide only but a good one
There has been a lot pf discussion on the length and size of the CB,
search Catzooks for the info and why it makes a difference based on the
skippers weight.
In summary, Bram would like to make a measurement of 55 as the max for
very good practical reasons but its not in the rules yet. we will discuss it at
Desoto. The area under the water is completely up to you.
NYC skiffs will build, in cnc cut foam, whatever blade section or profile
you want. If you are using the off the shelf blade then we purposely cut the
stock and the foil longer than you need to aid in manufacturing. (keep the
usable part well away from the ends of the saddles that can deform during
fabrication).
If you want my guesstimate
for 165lb skipper cut off the top, there will still be plenty of area and
stock section to raise the board.
185lb cut both, perhaps a little more off the bottom than the top.
200lb+ make it at least 55in not more than 57in and cut off the bottom.
I have attached a PowerPoint file showing the relative dimensions of a
couple of rudder options. In that document I suggest cutting the top of the
rudder stock. Now I recommend cutting off the blade.
I have often thought that the CB top offcut might be somehow fabricated
into blocks for the cb case with a little ingenuity and poured epoxy/
bladetight.
G
PS, just a reminder there is lots of very interesting things for builders
in the catzooks archive. I recommend spending a day and reading it all top to
bottom. Save the parts that you think you will need.
----- Original Message ----- From: "Mark White"
<Mark@xxxxxxxxxxxxxxxxxxxxxx>
To: "Greg Ryan" <gregoryrryan@xxxxxxxxxxx>; <swiftsolo@xxxxxxxxxxxx>
Sent: Thursday, December 29, 2005 11:25 AM
Subject: Re: Tiller Layup & Centerboard and Rudder layup
Greg,
The instructions say the finished centerboard is 54"
long, the blank is 62". What end do you cut off?
What is the finished size of the rudder? What end do you cut off?
Everything else seems clear.
Mark
----- Original Message -----
From: Steve Nichols
To: Swiftsolo
Sent: Tuesday, April 17, 2007 6:29 PM
Subject: Centreboard length
Hi guys,
What is the length of the cut down 49er board that is being used?
Also what is the length of Greg's blade that some people are using?
Cheers,
Steve
Check out my Swift Solo build progress on
www.aussieswift.livesaildie.com
Send instant messages to your online friends http://au.messenger.yahoo.com
|