Anonymous wrote:
Antoine I don’t fully understand what you have written, without photograph or diagram I find it hard to visualise.
I can’t visualise the “one running line from the upper batten to the lower batten”. It sounds as though you have just a single line managing all four battens – I can’t see how that works
>>> That because it does not work. I changed it this afternoon.
I can comment though, that the parrel-downhauls do work well. One for each batten would be nice, but that’s too many hauling lines – spanning them in pairs, as Slieve has described, makes more sense, managing two battens at a time. So, for your four battens, you need two of these running lines. Apart from your halyard and mainsheet, that’s all the running gear you should need with that rig, if it has the same proportions and geometry as the Amiina sail.
>>> Created the upper one this afternoon. The lower one has yet to be created.
In addition to adjusting the sling point of the yard, you might need to experiment a little before finalising exactly where these "parrels" attach to each batten, to get the sail setting perfectly.
(My boom is pretty light and perhaps because of the sheet span arrangement it floats up a bit, so I have added a standing downhaul on the boom too – which is just a bit of string tied on – that doesn’t normally need any attention, and you may not need it).
>>> Sounds like a good plan. Would be interested in the sheet arrangement.
The fixed attachments of halyard & boom to mast I find very appealing. My mast consists of two widths/dimensions as I have a sleeve (yes another one....) around the mast to enable lowering the thing. Sorry, I don't understand any of that. Can you add some diagrams?
Coromandels have a mast that can split somewhere below the middle. Richard has a picture of it on his site here:
https://tammynorie.wordpress.com/2014/06/21/mast-raising-demonstration/
I can agree with you that the split junk rig is untidy when reefed – the jibs won’t stay in conventional lazyjacks, as you have found. For a boat this size with SJR I cannot recommend more strongly the sail catcher as devised by Slieve. But it can be simplified. You don’t need a wishbone at each end – just the two stiffener “battens” each side.
Diagram shows the wishbone on Amiina (upper photo). Mine broke and I found it was not necessary (lower photo)
>>> I followed your example - I proceed without the wishbone ends.
For a sail this size you don’t need (and in my opinion don’t want) lazyjacks. Just two lift pairs – one at the mast where it will not interfere at all with the SJR sail – and the other (sometimes referred to as a "topping lift" as far aft on the boom as you can go provided it still captures the yard when you lower the sail.
The photo shows one side of the two lift pairs, in white. (The parrel downhauls are not visible here).
>>> I will need to simplify my lazyjack arrangement a bit then. I still use the set up as proposed for the original Coromandel rig.
I suggest you do not attach the lifts to the boom – and also do not attach the lifts directly to the two “batten” stiffeners on the sail catcher. Instead, attach the lifts to the sail catcher itself. That way the stiffeners merely stiffen the top of the sail catcher but do not carry a lot of weight – they can then be quite light. The weight of the bundle is carried by the sail catcher itself, via the lifts. This arrangement works well, not only muzzles the sail, but also can act as a sail cover – and a handy repository for your boat hook.
>>> Yes my prototype works the way you describe it here. I red your earlier contributions.
Spanned parrel downhauls, and sail catcher. I bless Slieve every time I raise my SJR sail!
>>> Same here but I have some way to go to get the whole thing going. Today the sail was a bag of wringles so I still have a ways to go.
Thanks for all input!!!