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Thread: Junk rig reefing and rigging garphic.

  1. #1
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    Default Junk rig reefing and rigging garphic.


    Sorry about the spelling error in the title...senior moment.
    Last edited by WX; 04-25-2019 at 06:32 AM.
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  2. #2
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    Default Re: Junk rig reefing and rigging garphic.

    Any questions?
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  3. #3
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    Default Re: Junk rig reefing and rigging garphic.

    I'm not clear on how the sheeting works. Are they block upon block type rigs?
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  4. #4
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    Default Re: Junk rig reefing and rigging garphic.

    Cool. I'd love to get some more time on a junk rig.

  5. #5
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    Default Re: Junk rig reefing and rigging garphic.

    Awesome video. Seeing it in 3D like this really drives home how amazing junk rigs are. Both complex and simple at the same time.
    It would be great if videos like this came with boat plans.

  6. #6
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Sailor View Post
    I'm not clear on how the sheeting works. Are they block upon block type rigs?
    With conventional BM rigs the sheet attaches to the boom. In the JR the sheet loading is distributed to the battens as well, the boom being basically a batten. The sheet attaches to the battens via sheetlets and multiple blocks are used to reduce friction. Does that help?
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  7. #7
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    Default Re: Junk rig reefing and rigging garphic.

    What are the advantages of a euphroe?
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  8. #8
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by P.I. Stazzer-Newt View Post
    What are the advantages of a euphroe?
    A early form of block arrangement I would say, though I think deadeye might be the right term?
    I’ve never used one, far less friction with blocks. The advantage would be cost I think, easy to make.
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  9. #9
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    Default Re: Junk rig reefing and rigging garphic.

    Lately I've been experimenting with light weight sleeveless blocks (the commercially made type). They would probably work well as euphroes.

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    Default Re: Junk rig reefing and rigging garphic.

    Lots of development in the racing world using new materials to bring back old concepts (like deadeyes). 'Frictionless Rings' are all the rage.....

    http://www.antal.it/eng/55_low_frict...neema_loops_en

    Could be the basis for a super simple junk rig setup?

  11. #11
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Clarkey View Post
    Lots of development in the racing world using new materials to bring back old concepts (like deadeyes). 'Frictionless Rings' are all the rage.....

    http://www.antal.it/eng/55_low_frict...neema_loops_en

    Could be the basis for a super simple junk rig setup?
    Probably a good idea, I’ll ask some fellow junkies and get back to you.
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  12. #12
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    Default Re: Junk rig reefing and rigging garphic.

    One person I know has used them to good effect on the sheet spans but the friction is too much for use on halyards. Probably ideal on small rigs, say under 20ft.
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  13. #13
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    Default Re: Junk rig reefing and rigging garphic.

    Is a junk rig another form of balanced lug? They look similar to me, though evidently the junk is very easily reefed as shown in your 'garphic'.

  14. #14
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Small boats rock View Post
    Is a junk rig another form of balanced lug? They look similar to me, though evidently the junk is very easily reefed as shown in your 'garphic'.
    I will probably be corrected but I think it’s a fully battened balanced lug rig.
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  15. #15
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    Default Re: Junk rig reefing and rigging garphic.

    As I understand it, the Chinese got camber into a flat sheet with battens. They also make for a reefing system. On the downside the battens and rigging lines add extra weight to the sail where you don't want it. The liens must carry some drag too. You also have an unstayed mast that has to be bigger and heavier than a stayed mast. 'Western' sailmakers put camber into the sail with sail panel cut to reduce weight aloft but at a cost, as that's a skilled job. In the end a combination of the two can be pretty effective, just look at windsurfing tech...though in small boats battens do stop a sail flogging sometimes when you want it to.

    I noticed a Storm Petrel Swallow Boats dinghy built with a Chinese junk rig which is pretty unusual for sale recently on Apollo Duck...





    https://www.apolloduck.com/boat/swal...-petrel/603797

  16. #16
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    Default Re: Junk rig reefing and rigging garphic.

    Edward my mast weighs 87kg. 9m long, 220mm at the partners and 100mm at the cap. In strong wind all the weight, what there is of it will be low down as the sail will be reefed. I also made my cambered panel sail myself so though fiddly it wasn’t that hard to do. Drag from running rigging is negligible.
    C910FBF8-51F4-497D-91C6-89C0DC777373.jpg
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  17. #17
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    Default Re: Junk rig reefing and rigging garphic.

    The above photo was taken during the first hoist of my sail after fitting batten pockets. The photo below was taken a few years ago before the present mods to sail and boat. Instead of batten pockets I had webbing loops which worked quite well but were a bit sloppy.
    D02EB474-A78C-4776-AC6D-1546E75EDD1C.jpg
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  18. #18
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    Default Re: Junk rig reefing and rigging garphic.

    Gary is the position of your mast step/partners as per design? Her original sail plan is bermudan with jib right?

  19. #19
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Small boats rock View Post
    Gary is the position of your mast step/partners as per design? Her original sail plan is bermudan with jib right?
    Yep BM rig on the plans. Hartley Spindrift 24. Mast and partners not as per plan. The original mast position was just aft of the fore hatch.
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  20. #20
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    Default Re: Junk rig reefing and rigging garphic.

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  21. #21
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    Default Re: Junk rig reefing and rigging garphic.

    I guess there was still sufficient bury even though the mast is further forward?

  22. #22
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    Default Re: Junk rig reefing and rigging garphic.

    From "The Voyage Of The Liberdade"
    Her model I got from my recollections of Cape Ann dories and from a
    photo of a very elegant Japanese _sampan_ which I had before me on the
    spot, so, as it might be expected, when finished she resembled both
    types of vessel in some degree.

    Her rig was the Chinese _sampan_ style, which is, I consider, the most
    convenient boat rig in the whole world.
    Worth reading anyway -> http://www.gutenberg.org/ebooks/18541
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  23. #23
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    Default Re: Junk rig reefing and rigging garphic.

    My favourite junk rigged boat, Bill King's 'Galway Blazer'.

    king2.jpg

  24. #24
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Small boats rock View Post
    I guess there was still sufficient bury even though the mast is further forward?
    1.2m. It’s a percentage of total length which is 9% minimum but 10% is ideal. Mine actually steps onto the stem piece just forward of number two frame.
    I can rattle off the figures because Mr Sibley gave me his copy of Practical Junk Rig on Friday and I have it with me.
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  25. #25
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by lupussonic View Post
    My favourite junk rigged boat, Bill King's 'Galway Blazer'.

    king2.jpg
    Mine is Ron Glas. Jock McLeod claimed he could sail her across the Atlantic in his slippers.
    All lines led to a helm station that could be closed in.
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  26. #26
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    Default Re: Junk rig reefing and rigging garphic.

    Sure, but he hasn't said if his slippers were in the end quite soggy and made from neoprene.

  27. #27
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    Default Re: Junk rig reefing and rigging garphic.

    A slightly different approach
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  28. #28
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    Default Re: Junk rig reefing and rigging garphic.

    Quote Originally Posted by Small boats rock View Post
    Sure, but he hasn't said if his slippers were in the end quite soggy and made from neoprene.
    He stayed dry.
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  29. #29
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    Default Re: Junk rig reefing and rigging garphic.

    Roger Taylor took high latitude sailing in small yachts into a new realm. I have one of his books.
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