[MHml] Open Racing offshore vs closed course was Cats vs Tri

[Rob Denney]

G'day,

Using a vane to trim the rig was always on the list of things to do on the
ballestron, but never got round to it. We are awaiting the engineering for
an 18m/60' harry with a wing rig.  This will be trimmed by a vane, which
should show how it can be done.

Using the rig is also a good idea and the basis of cheap and cheerful (and
successful) self steering gears on many boats.  The fun and sense of
accomplishment from getting non electric self steering gear to work is one
of the many things missing from today's short handed race boats.

Regards,

Rob the luddite.


----- Original Message ----- 
From: "Alan Christoffersen" <alan at insatech.com>
To: "'Informed discussion of multihull issues'" <multihulls at steamradio.com>
Sent: Monday, November 06, 2006 6:01 AM
Subject: Re: [MHml] Open Racing offshore vs closed course was Cats vs Tri


> You use a Balestron rig, with the windvane mounted at the forward end of
> the jib boom. The vane is connected to the tiller arm via a lever/gear
> system. By adjusting the length of the arm, you can adjust the
> amplification. Presto you have a proportional controller, that will give
> you a speed dependent offset,if you fiddle enough,this can probably made
to
> compensate for any offset/drift the boat has.  If there isn't enough power
> in this arrangement, you can use a trimtab on your rudder.
>
> I am trying to figure out how to use the rig itself, as this will offer
> even more power.....
>
> Actually came upon the idea of using a traditional autopilot to steer to a
> waypoint, then add a vane at the forward end of the balestron jib to
> control the whole boom relative to the wind, so you have an automatic trim
> system - alot simpler than the PLC based one I saw a wrte up on a couple
of
> years ago in Yachting world I think.  Ideal for lazy or tired single
> handers.
>
> Best Regards/Med venlig hilsen
>
> Alan Christoffersen
>
>
>
>
> -----Oprindelig meddelelse-----
> Fra: Gary Pearce [SMTP:gary at steamradio.com]
> Sendt: 5. november 2006 22:31
> Til: Informed discussion of multihull issues
> Emne: Re: [MHml] Open Racing offshore vs closed course was Cats vs Tri
>
> On Monday 06 November 2006 00:18, Rob Denney wrote:
> > Wind
> > driven self steering gear
>
> Now just how do you plan to do that for a vessel that presumably sails
> faster
> than wind speed at times over a predominantly downwind course ?
>
> Gary
> _______________________________________________
> Alter your subscription details or unsubscribe at the bottom of this page:
> http://www.steamradio.com/mailman/listinfo/multihulls
>
> Multihulls mailing list      (Multihulls at steamradio.com)
>
>
>
>
> _______________________________________________
> Alter your subscription details or unsubscribe at the bottom of this page:
> http://www.steamradio.com/mailman/listinfo/multihulls
>
> Multihulls mailing list      (Multihulls at steamradio.com)
>
>
> -- 
> Internal Virus Database is out-of-date.
> Checked by AVG Free Edition.
> Version: 7.1.385 / Virus Database: 268.11.5/426 - Release Date: 8/23/2006
>
>