Eric
 
Around here the largest LP allowed without penalty was 150% of J "with a
2% allowance for stretch".  That was due to dacron sails.  Of course
then sailmakers started building sails that were 152.9 % etc ...  
 
Mike

________________________________

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Eric
Baumes
Sent: Wednesday, October 09, 2013 1:36 PM
To: cnc-list
Subject: Re: Stus-List - genoa sizing


PHRF is a funny thing. 

At some point the max genoa without penalty went from 150% to 155%. And
of course your sail maker is going to tell you bigger is better. The c&c
34/36 track seems to have been designed for the small sail, so the sail
maker had to cut the clew super low so I could get the proper sheeting
angle without running out of track.

on my #3 which is about 100% it sheets inside the shrouds. track runs
all the way from the shrouds back. On other boats I have seen "split"
cars either on the same or split tracks that are adjustable with the
same controls.



On Wed, Oct 9, 2013 at 10:19 AM, Hoyt, Mike <mike.h...@impgroup.com>
wrote:


        
        yeah - what he said!
         
        makes a lot more sense than my attempt

________________________________

        From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf
Of Gary Nylander
        Sent: Wednesday, October 09, 2013 11:17 AM
        To: cnc-list@cnc-list.com
        Subject: Re: Stus-List - genoa sizing
        
        
        In a number of boats I've been on, the number 3 tracks allow a
'blade' type of jib to be led inside the shrouds, and the other long
tracks are for the number 1 and 2 and the sails are led around the
shrouds. As was said, the 1's are 150 or 155 or larger (depends on the
boat but most PHRF groups limit these to 155% (don't ask why). On
certain boats (J-30's come to mind), the number 1 for one design racing
is a 160 or 163 or so. On the Pearson Triton it is 170+. They get a
different rating than the PHRF boats with smaller genoas. The J-80 I
race on has both tracks and the one design rating (blade only) is
different than the PHRF (with a genoa).
         
        I think some of the C&C 35's have this arrangement - a smaller
track up forward, on or near the cabin top, which is for the smallest
jib.
         
        The 30-1's were delivered with no tracks, one sheeted the genoa
to the toe rail with a snatch block. That made for a rather wide
sheeting angle and less pointing. Most owners have mounted tracks aft of
the shrouds and in line with them to get better pointing performance.
However, these are pretty far inboard for reaching when you would like
to have the slot more open, so some folks have a device to lead the
sheet back to the rail area. I sometimes use a snatch block on the rail
and sometimes (light air) use the spinnaker sheet twing blocks. The boat
reaches better when not choked in.
         
        There is no specific percentage for a number 2, it is just
smaller than the 1, larger than the 3. Mine is about 140% - I bought it
used from Bacon's and only use it for cruising and once in a while for
breezier days.
         
        Gary
        30-1
         

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