5mm or 6mm Standing Rigging

[Francoisvdm]

Hi All, I have a Hurley 22 yacht project which came without any standing rigging. I need some advice on the steel wire diameter to use please. A lot of scratching around the internet seems to suggest that 1x19 316 stainless steel wire of 5mm diameter should be sufficient. Or should I be looking at a 6mm wire diameter? The sail area is approximately 240 ft (22.2 m2), and the ballast 1040 kg. I came across one rule of thumb that the breaking strength of the wire and related fittings should be 2 x ballast which suggests 5mm should do the job.
Many Thanks in advance.

 

[Tranona]

5mm most likely. Do you have the original bottle screws or are you buying all new? You could try here for confirmation www.hurleyownersassociation.co.uk or check with the rigger who makes up the shrouds for you.

 

[Refueler]

5mm 1x19 is fine .....

My 4 ton 25ftr is 5mm and that's been good for over 20 yrs.

 

[DownWest]

4mm would do for that, fittings are a bit cheaper too. 6mm is overkill.

 

[Refueler]

4mm would do for that, fittings are a bit cheaper too. 6mm is overkill.

Quite possible ...

I'm trying to remember what my Snap 23 had and I have a feeling that may have been 4mm

 

[peteK]

My Leisure 23sl has 4mm,you certainly dont need 6mm for a 22ft boat.

 

[chris-s]

Our Pegasus 700 at 23ft has 4mm all round. If going up in size you will probably also need to increase the tension putting additional strain on the boat which it may or have been designed for.

 

[VicS]

Our Pegasus 700 at 23ft has 4mm all round. If going up in size you will probably also need to increase the tension putting additional strain on the boat which it may or have been designed for.

There is no need to increase the tension purely because the rigging is uprated in fact it would be a mistake for the reason you quote

 

[Refueler]

There is no need to increase the tension purely because the rigging is uprated in fact it would be a mistake for the reason you quote

True because its the same tension as long as rigging is within sensible range ....

It would only be more if the rigging was so oversize - that weight of the wire itself was a problem in sag !