[Rhodes22-list] How does my mast jack work?

[Mike Riter]

Hi Kenwood.
You are obviously pretty apt in the mechanical dept. It might make sense to
stop trying to make the current system work and build the modern system
Stan made for the mast raising. It's a simple system that works
phenomenally well. I've always put the mast up by myself with it, even in a
breeze. It's also small enough to store on the boat while you're underway.

I'm out of town on a project right now, but will be home in a couple weeks.
If you're interested in pursuing this course, let me know and I can walk
you through it with detailed photos and measurements. The hardest part will
be machining the mount for the foredeck. With your skills, I imagine it'll
be a piece of cake.

SV Emma B




On Mon, Jul 15, 2024 at 7:43 PM Kenwood _ <kenwood364 at gmail.com> wrote:

> So, yes but no. We tried our best but... there's just nothing to attach to
> or like, no way to connect everything. We did find the eyes in the jib
> sheet cubbies, but they're almost perfectly inline with the jack. So it
> didn't really secure anything. Plus, the rope didn't nearly reach anything.
> it didn't even reach the tabernacle, and the angle it made with the
> deckhouse stays was so steep. Plus it didn't reach them either, it just is
> not that long. So far back aft in the boat. Plus.. it didn't really make
> any sense having it like that.
>
> Im sorry i forget who suggested it, but somebody theorized about putting a
> block on the forestay mount on the deck, and running thru that, to the
> forestay itself and pulling from that, but the angle is way to steep. and
> again, way too long for the mast jack.
>
> In the end, we just chopped up the mast raising system and turned it into a
> ginpole <https://nextcloud.kitsunehosting.net/index.php/s/8grS7Z67q5ZZHqW
> >,
> a job it is much more suited for after some cutting bending and
> re-arranging.
>
> On Mon, Jul 15, 2024 at 7:23 PM ROGER PIHLAJA <roger_pihlaja at msn.com>
> wrote:
>
> > Hi Kenwood,
> >
> > Have you had a chance to try my backwards mast stepping idea?
> >
> > Roger Pihlaja
> > S/V Dynamic Equilibrium
> > 1978. Sanford, MI
> >
> > Sent from my iPhone
> >
> > > On Jun 29, 2024, at 9:10 PM, ROGER PIHLAJA <Roger_Pihlaja at msn.com>
> > wrote:
> > >
> > > Let’s see, you would have to disconnect the backstays and the aft
> lower
> > side stays at their chainplates.  The forward lower side stays would stay
> > connected and the forestay + roller furler would remain tied off to the
> > mast.  The backward rotation of the mast would be stopped by the forward
> > lower side stays .  Port/starboard tipping of the masthead during mast
> > stepping would be limited by the upper side stays.  Once the mast was
> > raised, I would attach the back stays, then the forestay, and finally the
> > forward lower side stays.  Then, you could disconnect the halyard and
> > remove the gin pole.  I can picture the process working slick as a
> > whistle.  So, next question, does the bottom of the gin pole fit into the
> > table socket in the cockpit and are the guy lines sized to secure the gin
> > pole in an upright position?
> > >
> > > Please understand I’ve never actually seen your mast raising system in
> > operation.  I’m just picturing how it might work in my mind.
> > >
> > > Roger Pihlaja
> > > S/V Dynamic Equilibrium
> > > 1978. Sanford, MI
> > >
> > > Sent from my iPhone
> > >
> > >> On Jun 29, 2024, at 5:47 PM, Kenwood _ <kenwood364 at gmail.com> wrote:
> > >>
> > >> Oh, that's a strange idea but maybe yeah. Literally backwards gin
> > pole, I
> > >> can take some closeup pictures of the pole but, what you see is what
> you
> > >> get. And there is no socket or anything like that forward of the
> > tabernacle
> > >> just, putting that out there.
> > >>
> > >>>> On Sat, Jun 29, 2024, 5:41 PM ROGER PIHLAJA <roger_pihlaja at msn.com>
> > wrote:
> > >>>
> > >>> By any chance, does your mast raising system work “backwards”?  ie,
> > Start
> > >>> with the mast bolted into the tabernacle and lying forward resting on
> > the
> > >>> bow pulpit.  Then, winch the mast up backwards using a halyard led to
> > the
> > >>> gin pole and winch?  The guy lines on the gin pole would still be
> > rigged to
> > >>> hold the gin pole vertical.  I can see how this strategy would work
> > using
> > >>> only the pieces/parts in the photo.
> > >>>
> > >>> Roger Pihlaja
> > >>> S/V Dynamic Equilibrium
> > >>> 1978. Sanford, MI
> > >>>
> > >>> Sent from my iPhone
> > >>>
> > >>>> On Jun 29, 2024, at 4:25 PM, ROGER PIHLAJA <Roger_Pihlaja at msn.com>
> > >>> wrote:
> > >>>>
> > >>>> Hi Kenwood,
> > >>>>
> > >>>> The male pin and tabernacle in the picture looks like it’s designed
> to
> > >>> plug into the cockpit socket for the galley table.  The guy lines
> look
> > like
> > >>> they would attach to the stern cleats and the winches port and
> > starboard
> > >>> and would hold the gin pole vertical.  Do you have a block that
> > attaches to
> > >>> the forestay?  It looks like you would run a halyard to the block on
> > the
> > >>> bow forestay, then back to the block on the end of the gin pole, and
> > down
> > >>> to the winch.
> > >>>>
> > >>>> This is very different from the mast raising system on my boat.  On
> my
> > >>> boat, the base of the gin pole attaches to a fitting on the leading
> > edge of
> > >>> the cabin roof.  The forward lower side stays are attached to the gin
> > pole
> > >>> near the upper end.  The winch line on the gin pole runs to the bow
> > cleat.
> > >>> To step the mast, the gin pole starts vertical and pivots downward
> > from its
> > >>> base towards the bow as the mast is winched upward.
> > >>>>
> > >>>> Stan went thru a number of different versions of the mast stepping
> > >>> system.  You must have an early version.
> > >>>>
> > >>>> Never having used your system, I can’t comment on how well it works.
> > I
> > >>> think I have the newest version and it works pretty well.
> > >>>>
> > >>>> Roger Pihlaja
> > >>>> S/V Dynamic Equilibrium
> > >>>> 1978. Sanford, MI
> > >>>>
> > >>>> Sent from my iPhone
> > >>>>
> > >>>>> On Jun 29, 2024, at 2:39 PM, Kenwood _ <kenwood364 at gmail.com>
> wrote:
> > >>>>>
> > >>>>> All the reading I've done online talks about a ginpole but... Mine
> > >>> doesn't
> > >>>>> rly look like that? It has a socket and foot that looks like
> > it's.meant
> > >>> to
> > >>>>> socket into the cockpit. I don't understand! I was planning on
> > >>> dismantling
> > >>>>> the whole thing and turning it into a ginpole by removing the foot
> > and
> > >>>>> adding a rubber plate. What do you all think though? Is this
> simpler
> > to
> > >>> use
> > >>>>> than I think?
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>> Thanks!
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