Grommets Both Above and Below Each Batton ...
I recently picked up a second-hand Catalina 36 full batten mainsail to replace a more tired normally battened mainsail for my 1980 Hunter 36. (For any Hunter purists reading this, I did remove the Catalina logo from the sail before going out in public.)Firstly, one thing to check if you will be sewing in more slides than you already have on the luff. Added slides cause the mainsail head plate to rest several inches higher than currently when your sail is flaked down on the boom. For example four new slides may only add say five extra inches, but its enough that possibly your sail cover may no longer fit. Further to the concept of the suggestions that luff slides should be installed at each batten, I thought to convey that on the Catalina 36 sail, there is a grommet located both immediately above and immediately below each batton along the luff rope. From memory, about ~ 0.75-1.0" would be the distance. So if the batten is 1.5" wide, then the distance between the two grommets is say 3.0-3.5". One slug was attached at each batten by webbing strip that is looped through the two batten grommets in a manner that leaves the slug/slide at mid-point of the batton at the luff. I suppose that this arrangement distributes the stress of the batton along two points. On the conversion to my boat, the Catalina slides were too narrow for my mast track. When I replaced the slides with wider ones, I didn't bother with the webbing between the upper and lower grommets but only used the grommet just above each batton. I've only used the sail a few times, but seems to be OK. I am planning to inspect this location closely over the next few months for any signs of stress to the sail. regards,rardi