Right, Dwight. And it's not like our booms are made of balsa wood either! :)
On Fri, May 10, 2013 at 10:39 AM, dwight veinot < dwightvei...@hfx.eastlink.ca> wrote: > ** ** ** ** ** ** ** > > Andrew**** > > ** ** > > I agree big forces at play but if you keep the preventer tensioned the > forces act through very little distance (basically movement of the sail > from one side to the other, sort of like heaving to with the jib…different > if the preventer is slack and experiences a sudden shock load**** > > ** ** > > Dwight Veinot**** > > C&C 35 MKII, Alianna**** > > Head of St. Margaret's Bay, NS**** > > ** ** > ------------------------------ > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Andrew > Burton > *Sent:* May 10, 2013 11:17 AM > *To:* **cnc-list@cnc-list.com** > *Subject:* Re: Stus-List Gybe preventer**** > > ** ** > > Personally, I like to have one as close to the end of the boom as > possible--all the way from the end to the bow, if I'm running. Think about > the forces on the boom when the preventer stops an accidental gybe; they > are not straight down, which is how the boom is strongest. The forces are > more from the side (because the preventer is led forward to hold the boom > in one place), which is the weakest part of the boom. Another thing to > consider is that if at all possible, you should lead your preventer inside > your lifelines so you don't wipe out or bend a couple of stanchions if you > gybe. All that being said, it's kind of difficult to find a place near the > end of the boom if you don't have a loose-footed main so the preventer will > probably be attached at the mainsheet bail. **** > > I use a preventer pretty much all he time my sheets are eased, even in > light stuff, a powerboat wake can cause the boom to swing into the back of > a head. I wouldn't go with anything too stretchy; Dacron is fine. I usually > use a single line from the boom to a block on the rail and back to a winch, > so it's easy to adjust when I trim the sails. > > **** > > Andy**** > > C&C 40**** > > Peregrine**** > > ** ** > > On Fri, May 10, 2013 at 8:56 AM, Joel Aronson <joel.aron...@gmail.com> > wrote:**** > > The doctor who spoke at the Safety at Sea seminar said the #1 thing you > can do to prevent injury is to rig a gybe preventer. My mainsheet sheets > mid-boom. I know you need a rope with stretch to absorb shock.**** > > ** ** > > I was thinking of making a preventer as follows:**** > > Dyneema loop around the boom just aft of the mainsheet blocks. 3 strand > nylon with snap shackles to attach to the loop and toe rail. Is that too > simple? Should it run through a block to a cleat or clutch? > **** > > ** ** > > -- > Joel **** > > 35/3**** > > ****Annapolis**** > 301 541 8551 <301%20541%208551> **** > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com**** > > > > > -- > Andrew Burton > ****61 W Narragansett Ave**** > ****Newport**, **RI**** > ****USA**** 02840 > http://sites.google.com/site/andrewburtonyachtservices/ > phone +401 965 5260 **** > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2241 / Virus Database: 3162/5813 - Release Date: 05/10/13* > *** > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- Andrew Burton 61 W Narragansett Ave Newport, RI USA 02840 http://sites.google.com/site/andrewburtonyachtservices/ phone +401 965 5260
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