I have found that the wingmast on งง (ex Sidecar) does not rotate in the wind and is in fact difficult to adjust to the proper angle for sailing. Frequently I forget to adjust it after shunting and go for some time with terrible aerodynamics because it remains at the opposite angle from where it should be, creating a large area of detached flow.
I am unlikely to stay with the wingmast and will probably change it to a wharram type wingsail with luff sleeve that removes the large error. Probably not as efficient as a wingmast at its best, but much more efficient than a wingmast at it's worst.
Best regards
Herb
--- In harryproa@yahoogroups.com.au, "jaythree59" <jaythree59@...> wrote:
>
> Yes, bare poles in a storm or at when away from the boat at anchor.
> A wing needs to be able to be feathered AND also lowered.
> Just how often it actually gets lowered at sea will be something we learn as time on type clocks up a bit more...
> Perhaps we'd learn to feel safe with a wingmast with a "foolproof" bearing system to feather at the jetty or a fore and aft locking position for a mooring.
> For me this may be a moot point if I can get the wingsails sorted well, as they would use circular masts.
>
> Jeff
>
> --- In harryproa@yahoogroups.com.au, Mike Crawford <mcrawf@> wrote:
> >
> >
> > The three-mast discussion brings up a question that's been in my mind
> > for months now: If you want to survive a big storm, is it better to
> > have rotating wing masts or a circular mast section (either rotating or
> > fixed)?
> >
> > My guess is that the wing masts would be better if you're on board the
> > boat in open water, and can ensure they feather into the wind properly
> > in order to benefit from their lower drag. And that circular masts
> > might be better in a mooring field, particularly if you're not on the
> > boat to make sure everything is feathering properly.
> >
> > A big wing mast would be a nice compromise between a single skin sail
> > and a wing sail, with an inexpensive sail that sailmakers know how to
> > design and cut. But I've got an innate fear of the boat wanting to sail
> > while on the hook if it's got a schooner rig with wing masts.
> >
> > Any arguments for one mast section versus the other?
> >
> > - Mike
> >
>