Stus-List Second Reef Point on 33 MKII

CHARLES SCHEAFFER cscheaffer at comcast.net
Sat Mar 23 18:16:03 EDT 2019


Hi John,
Curious what model boat and where are you sailing to justify four reefs.

Chuck 1990 C&C 34R on Chesapeake Bay


> On March 23, 2019 at 11:40 AM john sandford via CnC-List <cnc-list at cnc-list.com> wrote:
> 
> 
>     I have 4 reefs, and calculated the heights based on wind speed pressure, max load, and hence sail area.
> 
>     Viz. Wind Pressure in Pounds per Sq. Ft. = .0053  x (Wind Speed Knots squared)
> 
>     Works fine up to 40 knots, (when the 4th goes in) haven’t tested it further yet.
> 
>      
> 
>     From: Josh Muckley [mailto:muckleyj at gmail.com]
>     Sent: March-22-19 9:52 PM
>     To: cnc-list at cnc-list.com
>     Subject: Re: Stus-List Second Reef Point on 33 MKII
> 
>      
> 
>     Not specific to 33 mkII but it is my experience that most slab reef points are equal distance from one another and the boom.  About 1/4 of the height of the sail per slab.
> 
>      
> 
>     If you find that the boat is uncontrollable in heavy winds with the first reef then either a second reef or no mainsail at all would be in order.  Your rigger/sail maker should be able to give some ideas.  If you have or plan to have a bat-car system, or a strong track system the placement of the second reef will have to take into consideration the stack height.  Penents/dog bones may be required to reach the reef horn.  Boom height when reefed is going to be a consideration for the clew ring placement.  Again all questions which the sailmaker should be discussing with you. 
> 
>      
> 
>     Josh Muckley 
> 
>     S/V Sea Hawk 
> 
>     1989 C&C 37+
> 
>     Solomons, MD
> 
>      
> 
>      
> 
>      
> 
>      
> 
>      
> 
>     On Fri, Mar 22, 2019, 6:33 PM Lee Rosenbaum via CnC-List <cnc-list at cnc-list.com mailto:cnc-list at cnc-list.com > wrote:
> 
>         > > 
> >         I have a 33MKII and all my mainsails have a single reef point.
> > 
> >         I do have two reefing lines in my boom so I can accommodate a second reef and am thinking of having one installed.
> > 
> >          
> > 
> >         My questions are:
> > 
> >            1. Do other 33MKII have as second reef?
> >            2. Are they beneficial?
> >            3. Where on the mainsail is the upper reef?
> > 
> >          
> > 
> >         I race on Lake Michigan and we have had some nasty winds the last two years.
> > 
> >          
> > 
> >         Thanks,
> > 
> >         Lee Rosenbaum
> > 
> >         Kookaburra
> > 
> >         1985 33MKII
> > 
> >         Kenosha, WI
> > 
> >          
> > 
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