Increasing diameter of a double braid

[alberto]

Hi to all.
Sorry for my english, I'm italian and what you're reading is my very best :-(

I'm not an arborist, I'm a skipper looking a way to do by myself with ropes as no one here seems be able to help me.
I'm trying to rig my regatta boat and I'm trying to loose as much as weight as possible, expecially on top of mast.

I've seen a great solution on a french boat I really don't know how to make. Immagine this:
- a vectran (core) rope with a polyester cover
- for the most of the lenght the cover has been removed (lo save weight (and this is not a problem) but due to the lower diameter the rope would not be usable with the stopper (requires a 12mm diameter to work properly)
- so, for a lenght of about 3 meters (approx. 9 feet) over the original cover (left in place there) it has been used an additional polyester cover
This way it's possible to move lo lower diameters permitted by vectran, lower again weight stipping out it's cover and using the original cover coverd again with another cover as to keep the diameter required.
This new cover, obviously must remain in place and not slip away even if in a working condition.

Anyone knows how to get that result?
Any picture or documets would be appreciated (as my english is poor..)

Thanks a lot.
Alberto.-

 

[Blinky]

I'm not sure if whiplocking or sewing the covers would work or not.
Get in touch with these guys, Brion Toss Yacht Riggers
If anybody can help, they can.

 

[alberto]

I think they will not work because of the load put also to the cover.
I tried 3 minutes ago to post a similar question to Brion Toss forum... let's hope.

Anyway. Thanks a lot.
Alberto.-

 

[knudeNoggin]

Thanks, Blinky -- you beat me to the referral to Brion's site.

Greetings, Alberto.
I have to wonder about using bare / unsheathed Vectran rope,
as
[ QUOTE ]
Although Vectran is lacking in UV resistance, this limitation can be overcome by using polyester as a protective covering.

[/ QUOTE ]

-- the usual sort of information found about Vectran.

*kN*

 

[NickfromWI]

Instead of whipping the cover to the core, make a long tapered tail on the cover and splice it into the core. That will leave a fair transition that can run through pullies/blocks and if done right, can also sustain a load.

Good luck!

love
nick