David,

The rope is stretching over the entire 100 foot -plus length.
Halyard tension should be adjusted during a race - less downwind, more
upwind.
You would need to check the sheaves to see if they were changed.  Rope
compatible sheaves are more V shaped.
Rope is more of a DIY project unless you have the tools.  You still the
need the rope tail.
Dyneema is lighter than wire, but I doubt you would notice the difference
on a 12,000 boat.

Joel
35/3
Annapolis


On Mon, Dec 2, 2013 at 11:01 AM, Hoyt, Mike <mike.h...@impgroup.com> wrote:

>  David
>
> Have your ruled out slippage of the halyards in the clutches?  We have
> this problem on a number of boats on which I sail.
>
> Mike
>
>  ------------------------------
> *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *David
> Knecht
> *Sent:* Monday, December 02, 2013 11:58 AM
> *To:* CnC CnC discussion list
> *Subject:* Stus-List halyards again
>
> I was thinking about the recent discussions of new high tech halyards and
> have a question.  The PO replaced my halyards with all rope, but I don’t
> know what kind it is.  I have noticed significant changes in sail shape
> over a day of sailing which I am presuming is stretch.  Given the length of
> a rope halyard for a C&C, the stretch factor seems like a serious issue.
>  If you have 60’ of line after uphaul, then 2-4% stretch becomes a
> significant amount of change in mainsail shape.  Those are the kinds of
> stretch numbers I am seeing for lower tech line.  I don’t want to have to
> adjust the halyard during a race when shorthanded.  One solution seem to be
> to use a low stretch line (spectra core, etc.) and the other is wire/rope.
>  It looks like wire-rope is actually less expensive, so what is the down
> side?  Are they less durable?   If someone says weight, then I am going to
> ask for a calculation of the relative weight difference of wire vs rope
> given the huge mass of aluminum and dacron we all have sticking 40’ off the
> deck.  I am hard pressed to believe that small weight difference is
> significant for non-Americas cup sailors.  Dave
>
>
>  David Knecht
> Aries
> 1990 C&C 34+
> New London, CT
>
>
>
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>


-- 
Joel
301 541 8551

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