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Have a very good look around the runs for any sharp edges or rough surfaces that might cause chafe. Absoultely the best thing since sliced bread is a mast track if the budget runs to it (but you will need a fully battened main for that). Good clutches and ST winches help enormously. If there are blocks in the boom for the reefing lines consider removing them on a boat of this size especially if going for downsized dyneema reefing. Look at the angle at which lines coming back present to the mast base and move deck tidys if necessary to get smooth angles (ie remove 90 bends). Personally I would have a think about whether you don't prefer single-line with thin dyneema.Īs you say the right place to start is by inspecting every sheave, making sure everything turns and runs nicely, replacing anything that looks worn or likely to cause friction. You might be able to get away with polyester and larger line if you are going for twin-line reefing. The size again is about friction reduction. We have 6mm dyneema reefing lines which are single line on reeds 1 and 2. I don't know anything about wire halyards but I think the sheave for one might have a deeper groove for the wire? If so be sure it is not roughed up by wire in any way that could snag or damage a dyneema halyard. As far as halyards go, I would stick with 10mm. I have all dyneema on my 30ft boat, mainly for size reduction and friction reduction. Probably buy from Jimmy Green or the like so it'll be decent bits of string and not cheap rubbish. Observations greatly appreciated - it's going to be a slowish project involving blowing all our cash on deck gear and blocks to start with and then doing the lines as we can over the season. The other control lines - so beefing up the kicker purchase, sorting the outhaul, cunningham and the pole lines - all pre streched polyester? Should i have dyneema for the reefing lines or can I get away with normal decent pre stretched polyester - and any thoughts about diameter again? If we have 10mm at the moment (I'm guessing) do we keep at 10mm or drop to 8mm dyneema? Or stick with polyester I'm thinking about dyneema for the genny (long run and used a lot so low stretch). Stick to wire and rope for the main or just change to cruising dyneema and if so what diameter? Do I have to change anything else like masthead sheaves if I change? It's an old fashioned sorta boat - so big old genny and a relatively small main. the main halyard is wire spliced to rope. The replacement will be coupled with taking all lines back to the cockpit and most likely reefing back as well using seperate lines and not single line. Normal halyard stuff or cruising dyneema question. Our various halyards are tired indeed - the spinny halyard is well beyond repair
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