Dyneema v pre-stretched braid on braid,

mickshep

mickshep

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Hi all. I'm about to begin renewing the running rigging on the mast of our Shipman 28. Is there anty real benefit in paying the extra for Dyneema as apposed to pre-stretched braid on braid. our sailing is definately more cruiser orientated, BUT! I do like to get the best out of any boat I'm sailing. Cheers, Mike.
 
For halyards that's the way to go.Mine,wich have been in place for 15 years now,don't stretch at all and feel very much like the steel halyards they replace.For sheets and guys normal braid on braid is usualy adequate.
 
That's interesting 30boat, I was thinking of replacing a 6 mm wire main halyard with Dyneema too. Did you have to replace the mast sheave, and increase the size of the halyard at all? (I ask about size with regard to ease of handling, not strength of halyard) The present set up is a bit of a 'dogs dinner' and I'm trying to simplify things.
 
I didn't change the sheaves and had no problems.It's more critical with kevlar than dineema.I'm using 8mm for the genoa and 12mm for the main,The larger size makes it easier to handle although it´s alright with 8mm.Some rope jammers might not work well with 8mm though.
 
Great. That's for me then, and I don't have any jammers to worry about, nothing leads aft it's all cleats at the mast. Thank you.
 
I too would go for Dyneema halyards every time, esp. for the main, it's the equal to wire for low stretch and so keeps luff tension compared with Braid. I find a secondary advantage of rope over wire is that it seems to have less tendency to flick forward and catch round upper mast fittings if the halyard is allowed to slacken.
 
Have a look on ebay ... I've been thinking of changing my halyards too and was fightened by the cost at established riggers. I notice dyneema occasionally on ebay for much less (if you spot one the right length) - not too much more than braid on braid if I recall correctly. They didn't specify a brand (eg Marlow, Liros etc.).... does anybody know if that's important - is "Dyneema" from company X likely to be less quality than the big names?
 
Not sure Mike as I'm new to dyneema too, but I'm hoping to get away with at least 10mm but preferably 12 mm, that's purely for ease of handling not strength, otherwise you could probably get away with 6 mm but it would be cruel on cold hands!! I need to go aloft and look at the sheaves before I decide for certain.
 
For a 28 footer 8mm is more than strong enough and it handles well.It's not exactly cheap so this size is a good compromise between strength and comfort of use.
 
Get some 8mm multiplait first and try it round your hands. I find 10/12 best for handling purposes. My original halyards were wire spliced to 12mm multiplait. I tried 8mm kevlar for a season (I had thirty yards left after a job.....don't ask.). I couldn't wait to replace it with thicker line, one season was enough.
 
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