Thanks for setting up a fun event, Judy!
Chris Sayer
P15, #2380, Akala
-----Original Message-----
From: JBlumhorst@aol.com [mailto:JBlumhorst@aol.com]
Sent: Tuesday, November 09, 1999 9:27 PM
To: wwpotter@tscnet.com
Subject: Re: p15 results cruiser challenge
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West Wight Potter Website at URL
http://www.lesbois.com/wwpotter/
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In a message dated 11/9/99 9:13:35 PM Pacific Standard Time, chrdvd@gte.net
writes:
> So was the reason the Montgomery 15 won due to it having a 125% Genoa
> compared to the 50% storm jibs of the p15's. I noticed for the big boat
race
> that Jerry won using a 110% Lapper over an Mont.17 and P19 with 150%
> Genoa's. How would inquisitive minds come to a conclusion regarding these
> descrepidating (that word almost broke my spellchecker) facts!
>
> Dave L
Hi Dave,
Maybe, but maybe not. The Monty 15 is three hundred pounds heavier than
the
Potter 15. Even with the small 23 foot jib, the P15 has a "sail area
to Displacement" ratio of about 0.18, while the M15 has an SA/Disp of about
0.13.
I think it's clear that the P15 was much faster upwind than the M15, but
much
slower downwind.
Take a look at these two items:
My page on the modern "hull speed" equation at <A
HREF="http://members.aol.com/jblumhorst/hullspeed.html">How Fast IS a West
Wight Potter? A New Look at Hull Speed.</A>
My post on the race and the various sail areas, displacements, LWL's at <A
HREF="http://www.cruisecortez.com/webbbs/trailersailor/index.cgi?read=38834"
>R
e: Sail area, LWL, displacement</A>
Best,
Judy