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Judy, I am probably showing my ignorance here but wouldn't you want the
cleat to be the weakest part of the system? It seems to me that the working
strength of the halyard, splice, and shackle is less than 500 lb.. IT would
seem that the last thing you would want to happen on a cruise is loose the
sail to halyard connection with no way to reconnect it without unstepping
your mast. Worse still would be pulling the attachment of the block out of
the mast. Mine is held by two 3/16" pop rivets. By the way, all my
halyards on the P-15 are 1/4" and pass through harken cam cleats.
Regards
> ----------
> From: JBlumhorst@aol.com
> Sent: Tuesday, March 9, 1999 2:46 PM
> To: Richard.Dickerson@ttmc.ttuhsc.edu
> Subject: Re: Cam, Clam, Jam, and clutch.
>
> In a message dated 3/9/99 12:27:41 PM Pacific Standard Time,
> Richard.Dickerson@TTMC.TTUHSC.EDU writes:
>
> > Dear Judy, How did you figure the load on your main sheet halyard? Let
> me
> > know please. Everything else looks good. Richard Dickerson
>
> Dear Dik,
>
> I consulted Bruce, the head rigger at Svendson's in Alameda. Incredible
> guy.
> He rigs million dollar yachts and still takes me and my questions on my
> P19
> seriously. He looked up the sail area, hull length/weight/displacement
> type,
> average wind conditions on SF Bay on a chart and recommended a minimum of
> 500
> SWL. He specifically cautioned me not to use a cam cleat or the spinlock
> miniclutch (200# SWL) for the main halyard if I was going to sail in heavy
> air.
>
> For my blocks everywhere on the boat, he estimated the load based on his
> experience. Then I did the layout, applied a load factor depending on the
> lead angle, and made my final selection for each block.
>
> Regards,
> Judy
>
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