Any knot will reduce strength at roughly 40%. A splice, done correctly, will not. In fact, rope strength is tested with a splice on each end. And it never breaks at the splice. Chuck Gilchrest Novabraid Ropes
Sent from my iPhone > On Feb 1, 2018, at 5:28 PM, Josh Muckley via CnC-List <cnc-list@cnc-list.com> > wrote: > > I've heard that a bowline can reduce strength by 50%. Additionally a bowline > has a fixed diameter loop or eye. It takes a good amount of dressing the > knot to make the eye small. A bigger eye means that the knot "two blocks" or > jambs in the sheave sooner. This could be a concern if you are trying to > maximize hoist for a long(ish) luff or if you're going aloft. I can barely > reach my tri-color to replace bulbs or lens as it is. A bowline doesn't > present as compact profile either. This could present a problem with > entanglement of other halyards at full hoist... Particularly if that also > includes a furler swivel. > > A bowline works and does have the advantage of saving you from having to cut > the knot out. > > Then again why use shackles and not just tie the halyards where they need to > go? But what knot would you use - A bowline, at 50% reduced strength > obviously so that you could untie it. > > Lots of options. We didn't even delve into soft shackles. I like the Double > overhand on itself knot for my purposes. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Feb 1, 2018 4:07 PM, "Matthew L. Wolford via CnC-List" > <cnc-list@cnc-list.com> wrote: > Nice knot. If you’re going to go that route, why not just tie a bowline? > > From: Jim Giffing via CnC-List > Sent: Thursday, February 01, 2018 3:29 PM > To: cnc-list@cnc-list.com > Cc: Jim Giffing > Subject: Stus-List Masthead sheaves C&C 37+ > > One thing to consider about sheave sizes which I did not think about when I > replaced my halyards... don't forget to allow for the eidth of your line due > to your eye splice for your halyard shackle. It obviously makes the line much > thicker and makes it harder to hoist the last 8"-12" or so of the halyard > without creating abrasion on the halyard. > > It was suggested to me to instead use something called the Jeanneau Halyard > Knot... something I never heard of in all my years of sailing but it solved > the problem for me and now I can raise the the halyard 100% without concern > for halyard wearing out faster at the top... here is a link on how to tie the > knot for those interested and never heard of it like me... I am probably one > of the last people to hear about it... never too late to learn. > > -- http://jeanneau.tripod.com/hintsandtips/id137.htm > > Regards > Jim > S/V Strong Tower > 1977 C&C 29 MK 1 > North East, Maryland > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray >
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