mainsheet system - westerly storm

[Rappey]

I have this on a 12 ton boat. It's original 4:1 was a struggle as the wind gets up.
Now I have 4 or 8:1. Can't find any use for the ratchets .

 

[john_morris_uk]

That’s reminiscent of the main sheet I used on Storm No 1 many years ago.

 

[Chae_73]

5:1 would be lower block triple with cleat, upper block double plus becket.

of course; thank you.

 

[Chae_73]

I've found somewhere which has the Lewmar blocks needed for a single ended 6:1.

If I take the length of the boom as two sides of a right angles triangle, work out the length of the 3rd side, x 6 and add a few metres, will this be roughly the length of sheet I need?

Or really I should to set it up and measure?

 

[TernVI]

I've found somewhere which has the Lewmar blocks needed for a single ended 6:1.

If I take the length of the boom as two sides of a right angles triangle, work out the length of the 3rd side, x 6 and add a few metres, will this be roughly the length of sheet I need?

Or really I should to set it up and measure?

If the boom doesn't go out to 90deg, you might be buying quite a few metres more rope than needed?
Would you let the traveller off to save a few metres?
It's not just the cost of extra, but the tangle potential and cockpit clutter.

 

[Chae_73]

If the boom doesn't go out to 90deg, you might be buying quite a few metres more rope than needed?
Would you let the traveller off to save a few metres?
It's not just the cost of extra, but the tangle potential and cockpit clutter.

Yes, that's a good point. Only getting to the boat every other week at the moment so there is a bit of a trade off between paying for surplus line which I may want to trim off, and waiting another fortnight to complete the job.

 

[Daydream believer]

Yes, that's a good point. Only getting to the boat every other week at the moment so there is a bit of a trade off between paying for surplus line which I may want to trim off, and waiting another fortnight to complete the job.

But if you are only going to it once a fortnight then there is no rush to get it - is there

 

[Chae_73]

But if you are only going to it once a fortnight then there is no rush to get it - is there

I'm not quite sure what your point is.

Mine was that if I wait to measure things, and then get the line, another two weeks would elapse before I could use the system. Whereas if I just buy a slightly too long line, I can use it at the next visit.

 

[penfold]

Sigma 33s were originally supplied with the same double ended mainsheet as the Storm, but most have been replaced with single-ended 4:1 with a fine trim; unless you're racing you could readily do without the fine trim and just have a 4:1 system, much cheaper and less string to get wrapped around everything(with the position of the mainsheet track on a Storm tangle avoidance is quite important).