A third JR sail for Dorothy

  • 12 Jun 2020 11:39
    Reply # 9032612 on 9030210

    By the way, check out the top batten in this, the second of Dorothy's JR sails. At this distance in time, I can't be sure, but maybe the aim was to see whether, as it just has to support the roach, the top, unsheeted, batten could be shorter than full length (similar to the short batten in a bermudan mainsail), easing the congestion in the sailmaking at the throat and allowing the sail to develop a little more  camber in this area.

    An experiment that someone might care to repeat?

    Last modified: 12 Jun 2020 11:52 | Anonymous member
  • 11 Jun 2020 10:29
    Message # 9030210

    Back in 1989, I built a clinker ply dinghy, Dorothy. She is an enlarged version of the Acorn 10/Puffin design from Iain Oughtred - he hadn't designed the Guillemot at that time; he did so as a result of the success of my enlarging the Acorn 10 to 11ft 6in, I think.

    Dorothy appears in JRA NL no. 20, December 1989 on p6, and graces the cover of NL no. 31, 1995. I used to sail her in the Solent, from Hamble River as far west as Newtown River.

    She had two JR sails back in those days, but at present she has a western standing lugsail.

    Looking for something useful and entertaining to do during lockdown, it occurred to me that I could make her another JR, to the sailplan that Annie and I have settled on for Fanshi, with low AR, low yard angle, hinged battens, the sail flat aft of the hinge and a little camber sewn in forward of the hinge. I have to lose a panel off the bottom, to fit the existing mast, but otherwise all I have to do is apply a scale factor of 0.4 to Fanshi's sail. Sail area is 4.66 sq m/50 sq ft.

    I have some 16mm GRP tube on order for battens, and found some yellow 60gsm polyester ripstop on eBay. When they arrive, I can amuse myself with some miniature sailmaking.

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    Last modified: 12 Jun 2020 11:15 | Anonymous member
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