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  1. #1
    Join Date
    Mar 2014
    Location
    Monmouth County
    Posts
    343

    Fin Box Breaking Fins

    Bought a new board recently and the fin box (futures)snaps the leading edge fin point that makes contact with the box. I blamed myself for the first broken fin thinking I may have screwed it down to tight... Nope. There is definitely an issue with the fin box after the same box cracked a second fin screwed in just slightly. So not only did I spend 700 on the board, it's broken 2 expensive fins.

    Anyone ever have this happen?

  2. #2
    Join Date
    Jun 2012
    Location
    Cape Cod
    Posts
    366
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    7
    I am not sure what you mean exactly but I snapped a futures fin like this (see picture below) a few weeks ago. Not sure how. I didn't realize it until I got ashore -- so I was surfing for probably at least a half hour w/o one outer fin in my quad setup.

    It was a challenge to remove, being I was traveling and I did not have all my tools, and there was nothing to grab. I was able to find a small screw and get it to "bite" and then pulled it out with pliers.

    snappedFutures.jpg
    Last edited by capecodcdog; Aug 16, 2014 at 01:15 AM.

  3. #3
    Join Date
    Aug 2010
    Location
    BELMAR, NJ
    Posts
    1,523
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    1
    Is your fin tight when you install it? Maybe try to lightly sand the base so it's not so tight when inserting it into the box

  4. #4
    Join Date
    Mar 2014
    Location
    Monmouth County
    Posts
    343

  5. #5
    Join Date
    Mar 2014
    Location
    Monmouth County
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    343

  6. #6
    Join Date
    Mar 2014
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    Monmouth County
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  7. #7
    Join Date
    Mar 2014
    Location
    Monmouth County
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    343
    It's crazy, I slide the fin in the box, and with one turn, this is what happens. The fin doesn't get seated all the way in the box.

  8. #8
    Join Date
    Dec 2013
    Location
    avon
    Posts
    188
    Quote Originally Posted by 3rdperson View Post
    It's crazy, I slide the fin in the box, and with one turn, this is what happens. The fin doesn't get seated all the way in the box.
    Might be a dumb question, but there are 2 sized fin boxes, depth wise. Usually the center fin, or trailers are like 1/4 inch and the fronts are 3/4 (I believe). Some fin sets though, the rears/trailer are also deeper. Thats probably not your issue but I dunno. Your not trying to put the deeper 3/4 rear fins into a shallower 1/4 box?

  9. #9
    Join Date
    Aug 2010
    Location
    BELMAR, NJ
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    1,523
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    Wierd... You think it's the angle that the fins/box where seated when they made the board? Maybe the cant is too much??

  10. #10
    Never happened to me but I like all blues theory...but it's possible the box was routed too deep prior to box install/poorly installed and by torquing down on the front screw creating a bit too much pressure on the front of that fin...leading to a cracked fin.

    Post a pic of the box...