Registered users don't see ads

Mainsail slug binds in the mast track

Discussion in 'Ask A Macgregor Owner' started by My Mistress, Feb 8, 2018. Add this thread to a FAQ

  1. My Mistress

    My Mistress

    Joined Nov 30, 2015
    200 posts, 25 likes
    MacGregor 26S
    US Lakehills, Tx
    When I try to raise my mainsail, the slug at the head binds in the track about 12inches below the masthead, preventing the sail from being fully raised. I've tried jerking the main halyard, putting all my weight on it, lubing the track, nothing seems to work. Any ideas? I'd hate to force it up,and then not be able to lower the mainsail.

    The sail is old, and could probably be recut.
    The slugs are 1/2". I have one at the head of the sail. I read somewhere that adding a second slug just below the topmost one would help.

  2. BudGates


    Joined Apr 19, 2012
    1,006 posts, 114 likes
    Macgregor 26d
    US Ridgecrest CA
    Although it is true that having double slugs at the head of the sail will keep the slugs aligned better, it sounds like you have some restriction in the mast. Your best option would be to drop the mast (fairly easy on a Mac) and try the sail slugs in the mast while it's down. Then you'll be able to pin point the issue better.

    My Mistress likes this.
  3. Bill Roosa

    Bill Roosa

    Joined Jun 6, 2006
    6,972 posts, 142 likes
    Hunter 40.5
    US Harrington Harbor North, MD
    A picture of the head of the sail would be helpful. Is there more than one attachment point for the halyard? How are you attaching the halyard to the head? I'm thinking that the halyard sheave is not seeing a fair lead. Having the sail head attached too far from the luft line (aft of the luft line proper) will cause problems. If the method of attachment does not allow the halyard to lead fair that will cause things to get bound up. this is much more important as the head gets close to the sheave.

    Will Gilmore likes this.
  4. Will Gilmore

    Will Gilmore

    Joined Oct 19, 2017
    2,752 posts, 1,180 likes
    O'Day 19
    US Littleton, NH
    An old main. An old halyard and swivel? Likely, there is twisting as the halyard reaches its end and the sail won't let it twist. (Just a guess, of course, but easy to check and fix if I'm right).

    - Will (Dragonfly)

    My Mistress likes this.
  5. Traveler


    Joined Nov 29, 2017
    18 posts, 3 likes
    MacGregor 26M
    US Home
    Try raising the boom with your boom lift.

    I had the same problem. When I pulled the boom lift, so as to raise the boom a few inches more than where it was when the slugs got jammed. It worked. The slugs then traversed to the top. Simple solution to an irritating problem.

    Will Gilmore likes this.
  6. Sumner


    Joined Jan 31, 2009
    5,140 posts, 195 likes
    Macgregor 26S/Endeavour 37 .
    US Utah's Canyon Country

    My Mistress likes this.
  7. Joe


    Joined Jun 1, 2004
    6,470 posts, 328 likes
    Catalina 27
    US Mission Bay, San Diego
    Traveler's comment will most likely solve the problem. Release the mainsheet and boom vang, even try lifting it with your shoulder or the topping lift, to take the pressure off the leech, and thus the top off the sail.... Before you hoist again, spray a little SailKote.. or silicon lubricant on the slug and the sail track.

    My Mistress and Will Gilmore like this.
  8. Chris&JenMac25


    Joined Jul 5, 2018
    10 posts, 1 likes
    Macgregor 25
    FourTwelve Us Eagle Creek
    Can you tell me the size of the slugs? I need to order new for a used sail.

  9. My Mistress

    My Mistress

    Joined Nov 30, 2015
    200 posts, 25 likes
    MacGregor 26S
    US Lakehills, Tx
    Mine are 1/2 inch.

NEW, updated Get Rid of Boat Odors
The bible of marine toilets and plumbing, expanded and updated for 2016!
Teak companionway doors
Amazing artisan quality, custom made to fit your boat.
Leaky Lewmar ports?
Start by replacing lens gaskets in stock now
Sail Trim Chart and Guide
When it comes to sailing, as basic as salt and pepper and just as indispensable!