main halyard
main halyard
Anybody know what the breaking strength requirements are for the 800 main halyard? I have the racing mast with a small square top added to the sail. There seems to be quite a range in breaking strengths between different dyneema and vectran lines, as well as price difference.
Also has anybody tried running any lines bigger than 8mm? I have a length of 10mm I am thinking about trying, but I think it will be too big.
Thanks!
Also has anybody tried running any lines bigger than 8mm? I have a length of 10mm I am thinking about trying, but I think it will be too big.
Thanks!
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- Joined: Wed 09 May 07, 0:18
- Your Country: USA
Re: main halyard
Use 8mm Spectra, Dyneema or Vectran, or any other low-stretch line. You are not strong enough to break it.toby123 wrote:Anybody know what the breaking strength requirements are for the 800 main halyard? I have the racing mast with a small square top added to the sail. There seems to be quite a range in breaking strengths between different dyneema and vectran lines, as well as price difference.
Also has anybody tried running any lines bigger than 8mm? I have a length of 10mm I am thinking about trying, but I think it will be too big.
Thanks!
Larry - Former Owner DF-1200
I understand that, but I have seen 8mm lines of varying low stretch material ranging in breaking strengths from 7,000 pds. down to under 4,000 pds. I would guess that 4,000 pd. strength would be more than adequate, but there is a lot of force involved. I want to make sure the line will be adequate while keeping costs under control.
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- Posts: 215
- Joined: Fri 03 Nov 06, 3:05
- Your Country: USA, Raritan YC, Perth Amboy, New Jersey
Your missing the point, you don't want the line to s t r e t c h .
Buy the line with the least amount of stretch you can afford. Good place to look is APS in Annapolis. Tell them what you are looking for in a high tech low stretch line. Ask if they have any line tails left over - that will save some $'s also. I just did two halyards from them last fall.
You may also look into doing a core to core splice - high tech no stretch up the mast and to the winch, while a cheaper double braid gets spliced on as a tail.
http://www.apsltd.com/c-1485-line.aspx
Ted
Buy the line with the least amount of stretch you can afford. Good place to look is APS in Annapolis. Tell them what you are looking for in a high tech low stretch line. Ask if they have any line tails left over - that will save some $'s also. I just did two halyards from them last fall.
You may also look into doing a core to core splice - high tech no stretch up the mast and to the winch, while a cheaper double braid gets spliced on as a tail.
http://www.apsltd.com/c-1485-line.aspx
Ted
Ted Paliwoda
D'Fly 1000 ; HN #1
Nice Tri
Raritan YC, Perth Amboy, NJ, USA
D'Fly 1000 ; HN #1
Nice Tri
Raritan YC, Perth Amboy, NJ, USA
The main halyard on our 800 is 10mm and it is too big for the sheaves at the mast base. Lots of friction raising the sail. I will be changing it to 8mm low stretch double yacht braid. I used 8mm as my main halyard on my previous boat, a 10 metre Crowther cat with a hell of a lot bigger (and heavier) mainsail than the DF has with no problems at all. The yacht braid is relatively inexpensive and has very little stretch, you can always rig a simple Cunningham downhall to tighten the luff.
cheers,
Paul
cheers,
Paul