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Thread: Bobstay fitting at the stem?

  1. #1

    Default Bobstay fitting at the stem?

    I'm considering a different way to attach the bobstay to my boat's stem. Currently it looks like this with two bronze straps. I like the look of the Spartan Martine Bobstay Chainplates, but even the smaller one is a little large for my 22 foot boat.

    https://www.spartanmarine.com/all-pr...te-assembly-12

    Any good alternatives that are not custom? I can easily get to the backside of the stem, so a fastener that passes right through is fine. I've seen bronze eye bolts, but question the strength.



  2. #2

    Default Re: Bobstay fitting at the stem?

    I just found this from Davey:
    https://www.fisheriessupply.com/dave...owsprit-plates

    No specs on the strength or even thickness of eye, but it looks like a possible solution. I'd need to bend the bronze to match the curve of the stem though.

  3. #3
    Join Date
    Oct 2008
    Location
    Walney, near Cumbria UK
    Posts
    58,096

    Default Re: Bobstay fitting at the stem?

    Quote Originally Posted by preserved_killick View Post
    I'm considering a different way to attach the bobstay to my boat's stem. Currently it looks like this with two bronze straps. I like the look of the Spartan Martine Bobstay Chainplates, but even the smaller one is a little large for my 22 foot boat.

    https://www.spartanmarine.com/all-pr...te-assembly-12

    Any good alternatives that are not custom? I can easily get to the backside of the stem, so a fastener that passes right through is fine. I've seen bronze eye bolts, but question the strength.


    They do look a bit crude and clunky. How do the widths compare to the width of your stem, I am thinking of letting the smaller one down into the face of the stem so that it appears to be smaller. Filing the edges round would make them look more finished without reducing the strength.
    Classic Marine does these: https://www.classic-marine.co.uk/pro...itting-bronze/
    It really is quite difficult to build an ugly wooden boat.

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  4. #4
    Join Date
    Mar 2019
    Location
    Rushworth, Australia
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    973

    Default Re: Bobstay fitting at the stem?

    https://www.classic-marine.co.uk/pro...itting-bronze/

    you might find this a better alternative. Although the price will scare you, itís more a case of paying once, worry less

    look at that , you beat to it Nick.

    BTW itís not too expensive to get a custom one cast in a near-by sand casting foundry and polish it up your self. Thatís what I did and now I can see where the expense of bronze comes from. Not hard to make a pattern (donít forget to create ďdraftĒ) and the polishing isnít hard, just time.

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    Last edited by Andrew Donald; 06-28-2022 at 08:03 AM.

  5. #5
    Join Date
    Jan 2007
    Location
    Brewer, Maine
    Posts
    128

    Default Re: Bobstay fitting at the stem?

    Go with a galvanized eyebolt. Line the hole with epoxy to prevent iron sickness, and get your grandson to climb behind the king posts to fasten the nut.
    70402530-9109-40C6-A781-9A5417A0A26A_1_105_c.jpg

  6. #6
    Join Date
    Oct 2009
    Location
    South Puget Sound/summer Eastern carib./winter
    Posts
    21,659

    Default Re: Bobstay fitting at the stem?

    Galv. eyebolt. Let the eye into the stem Al so the bolt part cannot bend, and then it won’t look like an eyebolt either.

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