Theoretical max is one hull in the water with max sail availability.
Looks like you could do with another couple of meters on the mast if
you want to race, otherwise just enjoy the safe cruising. Certainly
looking forward to your cruising story. Hope you write it up with pics
for multihull magazines. Unfortunately I lost most of my pics when I
cruised in a 6.5m aluminium tri from Port Moresby to Thursday Island.
It may be worth backing up with some disposable waterproof cameras
and waterproof paper for your notes and a dictaphone. If you like I
can send you some waterproof paper left over from my estuary research.
Robert
--- In harryproa@yahoogrou
>
> Hi
>
> I went under yesterday and cleared top of mast by less than 6
inches - tide was higher than expected.
>
> I try sometimes to see if Sidecar will fly, but maybe if take gear
out, roof off and sit to leeward. Is this necdessarily as fast as
having two hulls in the water or would that mean that you are not
getting a maximum force in the sails?
>
> Doug
>
> Robert <cateran1949@
> My sense of safety as to weight of ww hull is how much
windage there
> is under bare poles for the stability of the boat when it starts to
> really blow. A large part of the weight of a cruiser is all the junk
> carried for cruising. A Harry cruiser unloaded for racing has a good
> power to weight ratio and an excellent stability so it should be able
> to be moderately competitive as is, but if you are going to extremes
> offshore, then I can see Rob's mast shortening coming into its own.
>
> For going under the bridge, maybe you can fly a hull to reduce the
> mast height(:<)
> Robert
>
> -- In harryproa@yahoogrou
> >
> > Hi,
> >
> > Was wondering where the cut off point is in flying a hull racing
> and not flying a hull on a cruiser? How light do you need to keep a
> cruiser to be able to match it with racers? Can you do it safely?
> > Example boat - Visionarry LW hull, and Harry WW hull.
> >
> > Doug
> >
> > Doug Haines <doha720@> wrote:
> > Hi,
> >
> > You then have a large section at the top, this is adding windage
> maybe weight.
> >
> > I extended about 50cm to Sidecars two masts and can now sailo
> under a bridge here at about mid to low tide. The other bridge in the
> down stream direction is much lower, 5m and would suit a telescoping
> mast but will leave it up to Rob to sort out first.
> >
> > Doug
> >
> > Rob Denney <harryproa@> wrote:
> > G'day,
> > Both pieces of luff are attached with slugs/slides in an integral bolt
> > rope track.
> >
> > There is a discontinuity at the join, but should be no problem as the
> > nearest slides will be a couple of feet above and below it.
> >
> > The top part of the sail is always on the top mast. The top mast is a
> > bigger section than the bottom mast, so lowers over it.
> >
> > regards,
> >
> > rob
> >
> > On Jan 2, 2008 11:11 PM, George Kuck <chesapeake410@
> > >
> > >
> > >
> > >
> > > How is the luff attached to the upper mast so that it can be
> lowered to the
> > > bottom mast or is the upper luff free flying ? Is there a slot or
> track for
> > > the sail slides to run in and how will it transition from bottom
> mast to top
> > > mast ?
> > >
> > > George Kuck
> > > Chestertown, MD
> > >
> > > Rob Denney <harryproa@> wrote:
> > >
> > > G'day,
> > > >
> > > > Can the mast be lowered while the sail is powered up under load,
> when it
> > > > would be most needed to lower it ?
> > >
> > > No, but the on part mainsheet (with 4:1 fine trim) can be eased very
> > > quicklywhich allows the rig to weathercock, completely depowered.
> > >
> > > >What would the procedure be.
> > > Dump sheet, stroll across the dry, near stationary trampoline,
release
> > > the mast halyard (I will need to come up with some better names for
> > > the various lines, will ask for suggestions once I know what works),
> > > which lowers the top mast, with the sail attached and simultaneously
> > > lowers the bottom part of the sail. Mothe clew and luff downhauls to
> > > their new attachment points, sheet on and sail away. To drop sail
> > > completely, do the above,m then trip the halyard l;ock and the top
> > > part of the sail comes down.
> > > >
> > > > Do you have a back up mast or plan for one if the extendable
> mast should
> > > > prove not to be practical ? (not that it would be) or would you
> have to
> > > > start from scratch ?
> > >
> > > As it has to fit in a container, I would make a new top piece
with an
> > > internal sleeve. However, I would put up wth a lot of practical
> > > problems to have a wing mast which can be reduced in height, weight
> > > and windage by 50% I cannot any major reasons for it not to work
> > > (often the way at this stage of the process ;-)) Plenty of potential
> > > detail problems to solve, but the principle seems sound.
> > >
> > > regards,
> > >
> > > rob
> > > >
> > > > George Kuck
> > > > Chestsertown, MD
> > > >
> > > >
> > > > Rob Denney <harryproa@> wrote:
> > > >
> > > > G'day,
> > > >
> > > > You aren't the only one who hopes it works!
> > > > .
> > > >
> > > >
> > > >
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