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I would think mine is the dyneema sheath, it feels slippery. Strange they do that, I would think the polyester sheath would be cheaper. As to tightness causing damage. It wouldn't be the gearbox as the tension is on the pulleys not the gearbox. The vulnerable one would be the turning block I think. The word tight can be subjective, my tight and your tight may be different things.
Thanks for your input (again)
SM 299 Ocean Pearl
Today, I learned that Dyneema rope is made with a Dyneema braid outer sheath and also with a Dyneema core and a Polyester braid outer sheath. This is probably the reason for the mixed results from owners using Dyneema.
I had the outhaul line very tight 12+ years and never overhauled the outhaul gearbox. I did have a new spare waiting for a failure and maybe that is the reason it never failed...either that, or the famous Danny Simms grease access to the gearbox!😀
I was on the boat yesterday and tried tightening to line. While it had been pretty tight before I did manage to get a bit more out of it. It is tighter now than I think would be good for bearings. I will try it next time I go out and see if it still slips.
On 02 November 2018 at 01:57 "Bill Rouse brouse@... [amelyachtowners]" <amelyachtowners@...> wrote:
Thanks for that. I guess some Dyneema rope is slipperier than other. I will start recommending Vectran.
CW Bill Rouse
Admiral, Texas Navy
Amel School www.amelschool.com
720 Winnie St
Galveston Island, TX 77550
Hi Bill, yes bar tight. And I couldn't believe how fast and far it slipped in 18 knots of wind Thanks for the page
Danny, maybe it wasn't tight enough. I know at least 10 others that have not had the problem. Did you use the outhaul to really get it tight?
I am sending you a page out of my book.
yes I tried to get Kevlar and had to take dyneema 12mm. I fitted it very tightly but useless, as soon as the breeze came up it slipped dramatically. I agree with you about it diminishing in diameter but I think the casing is very slick too. It would seem 14mm might be a try but I doubt if it will work.
SM 299 Ocean pearl
On 01 November 2018 at 07:37 "Bill Rouse brouse@... [amelyachtowners]" < amelyachtowners@...> wrote:
Amel used Kevlar 10mm on the SM. It is nearly impossible to find.
Amel suggests 12mm Dyneema:
The issue was not with the strength because Dyneema line is stronger than Kevlar. The issue is that most rope manufacturers are taking fiber from the middle of the rope and 10mm isn't really 10mm anymore. I purchased some 10mm that I could squeeze with my fingers to 7mm. Look at the Anderson Line Tender. You will see that if you can squeeze 10mm to 7mm, the line will certainly slip.
A little while ago a number of you posted on replacing the control line for the mainsail out haul. I remember dyneema was not successful. Can some one remind me of what type was the best.
SM 299 Ocean Pearl