[Alberg30] Great Paint!

[John]

"Alberg 30 public list"
I just repainted my alberg 30, white she was black. I used  Interlux TopLac
It's a silacone polymer 1 part paint. It went on great and looks like  I
sprayed it!
J.Porter "Sea Dance" Alberg 30 #43
----- Original Message ----- 
From: <mmeinhold at toadmail.com>
To: "Alberg 30 public list" <public-list at alberg30.org>
Sent: Thursday, July 24, 2003 6:23 AM
Subject: Re: [Alberg30] Sail area


> You can find the area of any triangle with Heron's Formula :
>  let a, b and c be the lengths of the three sides.
>  find the half-perimeter s = 1/2(a+b+c)
>  then the area A = sqrt( s*(s-a)*(s-b)*(s-c) )
>
> Mike
> Mike Meinhold (soon to be #272)
>
>
> Quoting Dave Terrell <DTERRELL at message.nmc.edu>:
>
> > It is my understanding that the measurements are for the distance from
> > the stem (10.5) to the mast and the height of the mast(36). That will
> > give you 189 sq ft. I do not know that real jibs are right angle
> > triangles. I believe that if you want a 150% genoa, you just multiply
> > the 189 by 1.5. The real decision you have to make is where you want the
> > clew on the genoa. if you chose a high cut clue, you will still get 150%
> > of the jib area, but the sail will not be a right triangle. I would
> > guess that ordinarily genoas do not have right triangles - mine does
> > not. I think a next thing is to discuss with your sail maker whether
> > what your goals with the new genoa are. If you want to keep the sail off
> > the deck to improve visibility, a higher clew would be in order. If you
> > race, they other issues become very important. I think your sail maker
> > should be able to give good advice. If not, he/she would become suspect
> > in my mind. Sorry to take a few days to get back to you - I am not in
> > the office every day in the summer.That is one of the nice things about
> > college teaching. There really is time for sailing.
> >
> > >>> schuylki at vanent.vanebros.com 07/15/03 06:00PM >>>
> >
> > Thanks for the reply Dave; I'm encouraged my calculations for the main
> > are
> > in line with your figures.
> >
> > About the jib, though-do you have the foot and luff measurements
> > readily
> > available? There are max. dimensions for the jib listed in the
> > handbook-those are the figures I used. I don't remember them being
> > there
> > when I had a jib made many years ago, but there it is
> >
> > Also, I don't think luff X foot/2=sail area will work for genoas. I
> > think
> > that formula requires a right angle, and there aren't any on Genoas.
> > Gotta
> > use all that tangent and sin business. Or, do what the mathematically
> > challanged do; lay the sail out on the grass, make a right angle with
> > a
> > tape measure down the middle of the sail, and add the two areas
> > together.
> > At least, I think that will work...
> >
> > One step at a time
> > Thanks again
> > Michael
> > #220
> >
> >
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