[alberg30] PHRF QUESTION

[Guy Lalonde]

From: "Guy Lalonde" <guy.lalonde at sympatico.ca>

Hi Lee,

at first I thought the % number of a genoa had to do with sail area but then
I saw the following explained in a book.

With a jib, imagine a line extending from the tack of your jib to a point on
your forestay so that it meets the forestay at 90 degrees. Mesure that
distance, that will be considered the 100%.

Then measure the imaginary line between the tack of your genoa to a point on
your forestay so that it also meets the forestay at 90 degrees. If it is say
40% longer than the distance measured above, it is a 140%.

So if you measured 10 feet with the jib, and you then measure 14 feet with
the genoa, then it is a 140%.

Guy
#466

----- Original Message -----
From: <FINNUS505 at aol.com>
To: <alberg30 at onelist.com>
Sent: Monday, August 23, 1999 1:31 PM
Subject: Re: [alberg30] PHRF QUESTION


> From: FINNUS505 at aol.com
>
> Hi John,
> I read with interest your PHRF discussion, and maybe you can clear
something
> up for me, which other people on the list may find of interest as well.
> the various %'s that describe the headsails; are these %'s of fortriangle
> area, or just the 'J' measurement?  The 160-170 figure you mention for a
big
> #1, for instance.  Just for curiosity, what are the approximate foot, luff
> and leach lengths of that sail? (In feet, vs. metric, for us yanks :)  )
> Thx, John,
> Lee
> Stargazer #255
>
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