Hi Charlie, I'm no expert, but I have replaced my lifelines with dyneema and several other running rigging things. I made a short strop to raise the mainsheet purchase up off the traveller car and recently changed the wire in my solid vang to dyneema. I like dyneema because it's so easy to splice. However, I can also cut it with a good knife in one stroke. I think SS wire is best for a centerboard pennant because it is more ressistant to abrasion, harder to cut, and therefore more reliable especially out of sight and underwater. My 2 cents.
Chuck Resolute 1990 C&C 34R Broad Creek, Magothy River, Md > On July 7, 2017 at 3:52 PM Charlie Nelson via CnC-List > <cnc-list@cnc-list.com> wrote: > > It is time for me to replace my centerboard pennant--now 6 years old. > > The yard likes to go with stainless steel wire, which is the same as the > original pennant delivered with the boat when new in 1995. > > I am considering using an equivalent or stronger dyneema line but have a > few questions for the list before I proceed. > > 1. A portion of the pennant is always exposed to the sun--between the aft > cabin top winch and the turning blocks which direct the line below thru the > SS tubes. How does this portion of the line get protected from the UV? I > think a covered line would provide protection but the cover may not fit thru > the SS tubes which take the line to the board. Further, the cover on the line > should probably not stay in the water below the surface since it is likely > not dyneema. > > 2. The current SS wire is bent in a loop and swaged and led to a winch > with a 3:1 purchase. In the up position, the purchase and winch (and line > clutch) hold the board up. When the board is fully extended, it is stopped by > a fitting that 'catches' the swage and stops the board at a depth of ~ 7' 3". > At this depth, the leading edge of the board matches the leading edge of the > centerboard trunk (and the board is supported against athwartship forces by > the trunk).Thus the board is always held by the pennant, whether it is up or > down. Without a swage fitting, how will the line hold the board up while it > is extended? > > Hopefully some center-boarders on the list have switched to line and come > up with solutions. > > Thanks, > > Charlie Nelson > Water Phantom > C&C 36 XL/kcb > > > > > > > cenel...@aol.com > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
