Quote:
Originally Posted by Dave_S
I intend to go that way late next year.
From my research creep is a bit of a variable. Current trends seem to be to over spec the dyneema to about 3 to 5 times the required strength to reduce creep. That makes the dyneema significantly larger in diameter which has the down side of increasing drag.
I believe the creep issue will be better controlled with development of the material because it is theoretically possible to use narrower dyneema for the required strength.
If the makers can develop it so it will reduce drag that will be a significant issue resolved and increase sales so there is a great deal of motivation.
I don't think retentioning the rigging is much of an issue so I will go with rigging on the narrow side. You can buy it pre stretched now but that doesn't mean it won't stretch, just that it will stretch less.
I expect a lot to change between now and then. |
The weight reduction aloft allowing less heel will outweigh any negatives from the slight increase in drag. Most cruising
boats have so much stuff on
deck and along rails (not to mention dodgers, biminis, arches, etc) that
shroud diameter is trivial.
That said we have all Colligo for our
boat. Only thing that's SS is our two
head sails which are
furler. If you have hanks, dyneema will be fine as long as your hanks aren't jacked up on the inside. A good bit of cruisers are using this with hanks especially those with Solent stays or removable staysails.
Creep isn't an issue if you size your dyneema for creep not strength. The only thing we have to worry about is temp/season changes as dyneema has inverse changes to
aluminum for temps. In the
winter the dyneema gets longer and the
mast gets shorter, the opposite in the summer. We tension for the in-between.
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