Good sailcloth for JR

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  • 20 Feb 2017 09:13
    Reply # 4618710 on 1206989

    I placed an order for the 92g polyester, but I won't hold you responsible, David :)

    The price is so much less than Outguard, and this is my first JR sail, after all. I'll use tough seatbelt webbing, let's hope this works ok.


    EDIT: I will also consider the possibility of using Roger Taylor hinge-system between the top three panels and the rest of the sail. This will make it possible to make the upper part of the sail from a thicker cloth later on, if needed.

    Last modified: 20 Feb 2017 11:04 | Anonymous member
  • 19 Feb 2017 16:33
    Reply # 4617820 on 1206989

    That's as much about good sailmaking practice, and stopping flutter and flap, as it is about the weight of the material. Reinforcement, doubling where necessary and correct alignment will improve the performance of any fabric. Personally, I would choose the Outguard 190 for a serious offshore sail, the 92gm for an inshore sail. But don't take my word for it. Get a sample of at least a metre of each, and make sure by actually making something. Stuff sacks are always useful.

    Last modified: 19 Feb 2017 16:48 | David
  • 19 Feb 2017 14:58
    Reply # 4617732 on 1206989
    Yes,

    you have convinced me, too. Now I'm down to two options: this 92g polyester you recommend, or the Outguard 190.

    But which one... That seems a harder choice than I thought.

    Would you trust the 92g in F7-8 winds?

    Last modified: 19 Feb 2017 15:00 | Anonymous member
  • 19 Feb 2017 14:27
    Reply # 4617688 on 4598595
    David Tyler wrote:

    I've got some 92 gm/sq m/2.7 oz sq yd textured ripstop polyester from Pennine Outdoor, which I intend to use for the cover of my new wind vane.

    This morning, I sewed up my vane cover, and this confirmed my thoughts about the ripstop polyester being suitable for making a small sail. It's smooth and shiny, yet not too slippery to handle. It feels strong, but like other fabrics that we've been discussing, it stretches more across its width, so cloths should be laid parallel to the leech. It feels very dense, and resists the needle going through; this shows that it is quite tightly woven.
  • 19 Feb 2017 10:34
    Reply # 4617472 on 1206989

    If I were at all interested in lightweight junk rig racing sails (which I'm not), I'd be investigating Code Zero fabrics like this and this.

  • 18 Feb 2017 14:48
    Reply # 4616398 on 1206989

    One more thought: what about using a stiff, around 200g cloth (weathermax or outguard) and sewing the sail using Roger Taylor's hinge system? The sail is said to settle better in light winds with the hinges, right?

  • 17 Feb 2017 09:32
    Reply # 4614234 on 4614232
    Jami Jokinen wrote:

    Whoa,
    your tip of 90g/sqm, silicone-coated ripstop-polyester has to be the cheapest option available anywhere: only 1,70 eur/m (less than 2 pounds).

    This is a very interesting option, if I just find something a bit stronger and yellow/orange -coloured (for visibility) for the upper two panels!

    (And no, I'm not restricted to this one cloth provider website - if better options are to be found inside the EU, please bring them up!)


    http://www.pennineoutdoor.co.uk/fabrics/
    Wind-and-Shower-Resistant-Fabrics-BREATHABLE-and-
    Lightweight/PS38%20textured%20ripstop%20polyester
  • 17 Feb 2017 09:23
    Reply # 4614232 on 1206989

    Whoa,
    your tip of 90g/sqm, silicone-coated ripstop-polyester has to be the cheapest option available anywhere: only 1,70 eur/m (less than 2 pounds).

    This is a very interesting option, if I just find something a bit stronger and yellow/orange -coloured (for visibility) for the upper two panels!

    (And no, I'm not restricted to this one cloth provider website - if better options are to be found inside the EU, please bring them up!)

  • 17 Feb 2017 08:43
    Reply # 4614127 on 1206989

    The only thing that ripstop construction does is to enable the manufacturer to get more strength into a given weight of fabric. Stretch will depend on other factors in the way the cloth is woven and then processed post-weaving.

    No, I don't think you should use the PU-coated fabric. We've established that coatings and impregnations break down, in the case of Odyssey certainly, resulting in a loss of stability and strength. PU coating is for waterproofing only, and adds nothing to the properties of the fabric, in terms of sailmaking. It's not useful to have a coating on one side only, as we have to be more careful not to reverse pieces of cloth, so as to get a consistent appearance on each side of the sail. 

    If you are looking to get your fabric only from that website, I would prefer to choose from the 'uncoated' section, and there, the only one I would use is the Cordura. Unfortunately 120 gm is out of stock which leaves 185gm. In the 'coated' section, I see silicon coated polyester 75 denier 75gm and silicon coated polyester 75 denier 90 gm  which I would prefer over the silicon coated nylon balloon fabric. I also see three different  Dacron 170gm sailcloths which, let's face it, are the right thing from which to make sails, as they have been designed precisely for that purpose.

  • 17 Feb 2017 07:34
    Reply # 4613937 on 1206989

    Thank you, David, for your analysis and tips.

    Does ripstop make nylon less stretchy? And in that case, would this be a better option?


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