-I endorse what Mike says though I still reckon a gunter on sail tracks whose tip can can be made to slide in the tracks when bringing it down would do the job. A well designed two part mast makes more sense for your application. Don't know how you go about separating the two parts. I have a jammed two part windsurfer mast-- In harryproa@yahoogrou
>
>
> A two-pat mast seems to be the best bet.
>
> A telescoping mast would also be a great fit, but that's a more
> complex design, and you would lost anti-turtle flotation in one half the
> mast. I do believe that a telescoping mast could be done, but I also
> wouldn't want to be one of the early adopters.
>
> Robert's idea of a gunter would certainly work. However, I'd
> personally rather have a rig that makes it easy to raise and stow the
> sails in any wind, either with roller-reefing or using slides/cars and
> lazy jacks. It would probably be more time-consuming to go from sail
> cover to gunter and back again, especially if single-handed.
>
> I'd have a pro design a two-part mast, though. There is some serious
> stress in an unstayed rig, and while it's easy to design for, it does
> have to be designed for. A joint introduces other stresses, so I'd want
> it designed by a professional who has access to good Finite Element
> Analysis software.
>
> Cutting a mast and rejoining it could be done, but it probably
> wouldn't be pretty, and more importantly, you'd lose the ability to pass
> stress through nice, long, continuous carbon fibers. That said, if the
> patch were thick enough and long enough, it could work. I'd still want
> someone to do FEA, though, to make sure how long and thick the patch
> would have to be.
>
> - Mike
> / /
>
> Gardner Pomper wrote:
> >
> >
> > Hi,
> >
> > Still trying to figure a good rig for a boat that wants alot of sail
> > area (Rare Bird-ish), but can still be shipping in a container. The 2
> > part masts sound doable, but difficult. I was wondering if it makes
> > sense to just build a regular 1 part mast, 50-60 feet long, then cut
> > it in half, if I do end up shipping the boat in a container. It will
> > cost at least $6000 to ship the boat, so I can't imagine doing it more
> > than 2-3 times in my life (who knows, maybe I never will). Does it
> > make sense to just cut the mast, stick it in the container and then
> > repair it at the destination?
> >
> > Thanks,
> > - Gardner
> >
> >
>
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