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

Thu Jul 18 16:17:41 EDT 2024

We really dont have trouble making parts haha, its the design that takes a
lot longer! I think my first attempt was a good facsimile of the
stan-design but i would totally love to get your numbers and dimensions :)
this seems to be the way to go forward. Thanks!

On Wed, Jul 17, 2024 at 3:38 AM Mike Riter <mike at traildesign.com> wrote:

> 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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> >
> http://rhodes22.org/pipermail/rhodes22-list/attachments/20240629/1f3a2d4c/attachment.jpg
> > > >>>>
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> > >
> >
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