Forgot password

Mast collar size

  • 20 Apr 2018 08:23
    Quote
    Reply # 6112141 on 6097536
    Anonymous member

    You might be able to find some plastic tube at a builders' merchant, that would be more or less the right size? 
  • 20 Apr 2018 05:26
    Quote
    Reply # 6112013 on 6097536
    Anonymous member

    I have no option to step the mast before the boat is in the water, and I have to start the transport sail rught away. I have to use sime kind of a mock-mast to set the step and partners ready.
  • 18 Apr 2018 17:10
    Quote
    Reply # 6109190 on 6097536
    Anonymous member (Administrator)

    Jami,
    I first stepped Ingeborg's mast a couple of times, using  only two screws to hold the mast step. I didn't sail with this, but when I was happy with the mast's setting ( that is, dead plumb both ways). I removed the mast, then carefully marked up the position of the step, then removed it and finally fastened it permanently to the sole with a few screws and epoxy.  When doing so, I left a string in the draining groove and rinsed the groove from epoxy with it, before it set.

    See photos in this album.

    Arne

    Last modified: 18 Apr 2018 17:21 | Anonymous member (Administrator)
  • 18 Apr 2018 16:56
    Quote
    Reply # 6109178 on 6108734
    Anonymous member
    Arne Kverneland wrote:

    If you build the mast step in two stages, as shown here, you will be able to trial step your mast and fine-adjust the step's position. This will ensure a perfect alignment and save you from some worries.

    Arne

    Yes, this is the plan. But what kind of forces are involved - will the step be secure enough if only screwed on without epoxy? 
  • 18 Apr 2018 10:50
    Quote
    Reply # 6108734 on 6097536
    Anonymous member (Administrator)

    If you build the mast step in two stages, as shown here, you will be able to trial step your mast and fine-adjust the step's position. This will ensure a perfect alignment and save you from some worries.

    Arne

    Last modified: 18 Apr 2018 10:51 | Anonymous member (Administrator)
  • 18 Apr 2018 10:08
    Quote
    Reply # 6108713 on 6108619
    Anonymous member
    David Tyler wrote:
    150mm will be big enough. Because both mast and partners are parallel, the wedges will have to be carefully made with only a slight taper (hard to drive out again), and with an enlarged top end so that they don't drop through.

    This doesn't give much room for possible misalignments with the mast step and collar. Looks like I have to be sure with the measurements... Thanks!
  • 18 Apr 2018 08:01
    Quote
    Reply # 6108619 on 6108448
    Anonymous member
    Jami Jokinen wrote:
    Jami Jokinen wrote:After learning the right technical term (butt-weld flange) I managed to source aluminium ones from a nearby seller.

    Since I have to take the mast out every autumn, I think I'd be more at ease with a bigger hole and using wooden wedges.

    The flange sizes available are 150 (wedges quite small) and 200 mm (wedges maybe too big). Which would you choose for a 130mm mast?

    Help? Please?


    150mm will be big enough. Because both mast and partners are parallel, the wedges will have to be carefully made with only a slight taper (hard to drive out again), and with an enlarged top end so that they don't drop through.
  • 18 Apr 2018 04:19
    Quote
    Reply # 6108448 on 6107364
    Anonymous member
    Jami Jokinen wrote:After learning the right technical term (butt-weld flange) I managed to source aluminium ones from a nearby seller.

    Since I have to take the mast out every autumn, I think I'd be more at ease with a bigger hole and using wooden wedges.

    The flange sizes available are 150 (wedges quite small) and 200 mm (wedges maybe too big). Which would you choose for a 130mm mast?

    Help? Please?
  • 17 Apr 2018 18:08
    Quote
    Reply # 6107684 on 6097536
    Deleted user

    Yea,. Synaptic misfire - Sorry
  • 17 Apr 2018 16:47
    Quote
    Reply # 6107576 on 6107479
    Anonymous member (Administrator)
    Dave Rieger wrote:
     Question to Arne,

    I'm getting ahead of myself here (because I haven't researched this point yet) but -

    You are suggesting 'clamping' the mast to the step with bolts rather than boring a couple of holes through the step AND the mast allowing the bolts to pin the mast to the step.

    I'm curious, why one method over the other?



     No, I was talking about the partners, not the step.

    Arne
       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

                                                              Site contents © the Junk Rig Association and/or individual authors

Powered by Wild Apricot Membership Software