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Mast collar size

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  • 13 Apr 2018 14:41
    Quote
    Reply # 6097706 on 6097536
    Anonymous member

    Thanks David,

    The price is indeed right. It’s thick, stainless steel and costs about two lunches.

    Using this collar would mean getting the hole at partners and the mast step position spot on from the start with no possibility of slight adjustment with wedges?
  • 13 Apr 2018 14:29
    Quote
    Reply # 6097700 on 6097536
    Anonymous member
    Jami Jokinen wrote:

    Am I on the right track here? The collar is dirt cheap, and there are several of them, so I could buy two and use the other on the mast step. If only the dia was 150-160mm...

    Edit: what If I made a nice rubber gasket for the collar and the bolts, and install the collar every time the mast is being installed (every spring and vice versa in the autumn)? Would the tight-fit collar still be  a no-go?

    It looks immensely thick, and the fastening holes look huge, but if the price is right ...

    Yes, the collar can be permanently installed on the mast (fig 9.7 in PJR, for example). I doubt whether you can get any sheet material into the 0.5mm gap to prevent rattle and fretting, but you can pump in some sealing compound using a fine nozzle, and then put a mast coat over the top. Add a soft rubber gasket to mount the collar on, and you have a good strong solution.
  • 13 Apr 2018 11:45
    Quote
    Message # 6097536
    Anonymous member

    Holy cow! This was my initial thought while exploring at the local junkyard. Then it hit me - it was probably too good to be true.

    I found a sturdy stainless steel collar that costs next to nothing. Absolutely fabulous (see photo).

    The inner diameter is 131mm, and the lower part of my mast will be 130mm. I suppose this is unusable, because:

    - no way of installing wedges

    - too close a match to slip in and out the mast with a crane and a swinging boat

    Am I on the right track here? The collar is dirt cheap, and there are several of them, so I could buy two and use the other on the mast step. If only the dia was 150-160mm...

    Edit: what If I made a nice rubber gasket for the collar and the bolts, and install the collar every time the mast is being installed (every spring and vice versa in the autumn)? Would the tight-fit collar still be  a no-go?

    1 file
    Last modified: 13 Apr 2018 13:34 | Anonymous member
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