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5.7 mast sheaves  Bottom

  • Does anybody know where to get the mast sheaves for the nacra 5.7 can be replaced with west marine might carry.
  • Murrays.com has em
  • The 5.5 and 5.7 has the same mast except for the lowbudget external halyard and halyard lock of the 5.7.
    I suggest you upgrade with the 5.5 top fitting with sheave, hook and ring. I have the top fitting and hook lying around, unfortunately shipping from Sweden might be a problem?
    https://bnrwatersport.com/images/stories/virtuemart/product/mt118.2.jpg



    Edited by revintage on Oct 15, 2021 - 01:35 PM.

    --
    Brgds
    Lars

    Present multihulls:
    Frankencat 5.8/F20
    Frankentri 5.5/Tornado/F18
    Aerow trimaran foiler

    https://www.facebook.com/groups/1192604934176635
    --
  • revintageThe 5.5 and 5.7 has the same mast except for the lowbudget externat halyard and halyard lock of the 5.7.
    I suggest you upgrade with the 5.5 top fitting with sheave, hook and ring. I have the top fitting and hook lying around, unfortunately shipping from Sweden might be a problem?
    https://bnrwatersport.com/images/stories/virtuemart/product/mt118.2.jpgEdited by revintage on Oct 15, 2021 - 07:30 AM.


    I mill my own out of delrin. But, I would agree with upgrading to the hook. If the sail is built right and everything lines up, it hooks and unhooks like a dream. Very simple.

    --
    Scott

    Prindle 18-2 Mod "FrankenKitty"
    Tornado Classic "Fast Furniture"
    Prindle 19 "Mr. Wiggly" - gone
    Nacra 5.8 "De ja vu"
    Nacra 5.0
    Nacra 5.8
    Tornadoes (Reg White)
    --
  • rungiDoes anybody know where to get the mast sheaves for the nacra 5.7 can be replaced with west marine might carry.


    Here is what came on my 1983 Nacra 5.0 which uses the same mast head setup as the 5.7.

    https://www.thebeachcats.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=135945&g2_serialNumber=4

    I tried every sheave Murrays and others had, but could not find the correct size. I was just about to have a set custom made, but found out that the 5.0 (an upgraded version) is still made in Australia that uses the correct sheave. I ordered it from:

    http://www.nacra.com.au/contact

    It looks like this:

    https://www.thebeachcats.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=135949&g2_serialNumber=4

    The only difference between this new sheave and the old originals is that it is supplied with a spacer to get the ID down to 1/4", the width and outer/inner OD are the same.

    Hope this helps.

    Enjoy

    --
    Hobie 16 (3 formerly)
    MacGregor 25 (formerly)
    Chrysler Dagger 14 (formerly)
    NACRA 5.0 (currently)
    High Point, NC
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