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John,
Your planet is not as far as you think from the Class Rulles, there is an appendix 4 about experimental rules describing how you can use an asymmetric spinnaker. Probably your sail is not meeting all requirements, but you are using the standard halyard of the spinnaker. Perhaps there is just a problem of inches on bowsprit extension.
Here BEL-1 J-C, another Challenger, sailing in an international regatta with a perfectly legal asymmetrical. This crew used NOT to set the spinnaker above force 3, so we had to wait sometimes for 20 minutes more to launch the next start procedure. Clik on image to see the whole gallery
The problem is that our tests are showing that an asymmetric spinnaker is always slower than a conventional on winward-leeward courses if the sail area is the same, and we cannot allow a much larger area (it was tested too) as this would become a "measurement hole" for conventional spinnakers, made "just" asymetrical by one inch on the leech to take advantage of the increased area.
Here GER-201 Toni, a German Microsail, set a 25 sq.m. asymmetrical (illegal for the Class Rules), the halyard is higher than standard. Fits nicer than yours. Click on image for the discussion on Micro Class forum
Phil
----- Original Message -----From: john hughesSent: Friday, April 17, 2009 10:29 AMSubject: Re: [MicroClass] Re: Yardstick number for micros
hi john, youīre asking the wrong person, sadly i donīt get much chance to race but a couple of points, i donīt know the sail sizes of a medina but itīs unlikely they will fit in micro rule sizes. As youīre not racing "class" i donīt suppose it matters too much. Two reefs in the main are a bit overkill but thats what the class rules say. My jib has a reefing point in it so rather than change sails you can reduce. with a bit of imagination you can rig lines to do this from the cockpit- someone on the foredeck kills the micro stone dead. Iīve found it works very well. Good Sailing!!
--- On Wed, 4/15/09, john hughes <johnhughes1@...> wrote:
From: john hughes <johnhughes1@...>
Subject: Re: [MicroClass] Re: Yardstick number for micros
To: MicroClass@yahoogroups.com
Date: Wednesday, April 15, 2009, 9:15 PM
--- On Sun, 9/28/08, Philippe DE TROY <philippe@detroy. org> wrote:
From: Philippe DE TROY <philippe@detroy. org>
Subject: Re: [MicroClass] Re: Yardstick number for micros
To: MicroClass@yahoogro ups.com
Date: Sunday, September 28, 2008, 10:27 PM
Back on this old topic...A German competitor entered the 30th Micr'Eau d'Heure and declares his boat as a "Gem with a Cruiser's rig". He sent his national measurer a setof measurement, but after some exchanges, it appeared that the boat was not a Gem, but probably a Jones Micro 18 (this is the boat described on http://www.microcla ss.org/forum/ viewtopic. php?p=3398)I'm searching the Stour sailing Club Galleries, and on http://www.stoursai lingclub. co.uk/Images/ Gallery/Regatta% 20Day%202% 20035.jpg, the 4 boats from the left are familiar to me, and identified as Gems. The fifth one, on the right side, should be a Jones... (someone confirms?)Then, apparently, the rig is shorter indeed, but for Cruiser, the Mainsail Hoist "P" is limited to 6,85 m (or 22ft 5in) and mast length 7,70 m (or 25ft 3 in)Data for the Gem are P=7,25 (23ft 11in), mast length unknown, but limited by Micro Class Rules to 8,20 m (26ft 10in)This gives, on paper, a slight advantage to the Gem.According to the French Handicap National (HN) TCF system, the only element of comparison I found in addition of the Gem (PY 1069-HN 0.6973) is the First 18 (PY 1111 / HN 0.6466)...The PY of the Swift in the Byron software table seems right, related to the First as they are believed to be similar in performance, but the Gem could be too high (equivalent of HN, compared to the First, should be 1029!But there are other boat types in the range of PY 1051-1111, common to both tables, and most of them (Centurion 32, GK 24, J 22, Sun 2000, Shipman 28, Ecume de Mer, Trapper 300, Jouet 760, Dufour 2800, Trapper 500, ...) ALL having a TCF in France between 0,73 and 0,75... This is the TCF of a Micro Proto (Hot Boat, L'Arte), NOT for the Jones or any production Micro...A first conclusion ofthe comparison of the tables is than Byron software over-estimates the performance of a Micro by approximately 3 to 5 minutes per hour (except for protos, but HN is based on modern boats with carbon rig)Anyway we don't have more information about the Jones Micro 18, but personally,based on 1069 forthe Gem, I should not give less than 1096, probably 1115, but also change the Swift to 1143 and the First 18 to 1152...Phil----- Original Message -----From: Peter HalliwellSent: Thursday, September 06, 2007 12:01 PMSubject: RE: [MicroClass] Re: Yardstick number for microsThanks everyone...thats good enough for me.
Peter H
Terry <terry.home@home- it.com> wrote:The Micro Gem runs a Handicap of 1069The Micro 18 is slightly faster with a Handicap of 1050The Swift 18 has a Handicap of 1084Not checked any of the other Micro Cuppers as these are the only ones I have had to use for handicaps at our clubPS. A good reference for handicap numbers is available fromRegardsTerry-----Original Message-----I'm thinking of getting a Micro...what PY Number are the Brit boats sailing to?
From: MicroClass@yahoogro ups.com [mailto:MicroClass@ yahoogroups. com] On Behalf Of Peter Halliwell
Sent: 05 September 2007 15:03
To: MicroClass@yahoogro ups.com
Subject: Re: [MicroClass] Re: Yardstick number for micros
Peter H
Steve Culpitt <sculpitt@hotmail. com> wrote:Dave
I sheet to the coach roof, what do you have around the 4 year mark?
Steve
On 3/9/07 23:25, "David" <dave.waters@ btinternet. com> wrote:
Steve,
All are sound but quite well used. I replace my sails before they
get too stretched but I like to get a few seasons use from them.
Ages range from 10+ years to about 4. Sheeting angle of course
depends on position of tracks and blocks. On the Micro18 the
sheeting angle is typically to make a lot of tension down the leech.
Dave
--- In MicroClass@yahoogro ups.com <mailto:MicroClass% 40yahoogroups. com> , Steve Culpitt <sculpitt@...> wrote:
>
> Dave
>
> What condition are they in and how old?
>
> Kind regards
>
> Steve
>
> Oh and what sheeting angle?
>
>
>
> On 29/8/07 15:24, "David" <dave.waters@ ...> wrote:
>
> >
> >
> >
> >
> > Hullo Jimmy,
> >
> > I have a number of redundant Micro 18 sails, including jibs. If
you
> > still need a jib (or any other sail) please let me know. I live
in
> > Colchester, Essex and I sail my boat on the Stour at Manningtree.
> >
> > I'm not familiar with the Microdsail, but if you can give me the
> > measurements I could check them against the Micro 18 sail(s).
> >
> > Regards,
> >
> > Dave
> >
> > --- In MicroClass@yahoogro ups.com <mailto:MicroClass% 40yahoogroups. com> <mailto:MicroClass%
40yahoogroups. com> ,
> > "jimmyfuller0" <jimmyfuller0@>
> > wrote:
> >> >
> >> > --- In MicroClass@yahoogro ups.com <mailto:MicroClass% 40yahoogroups. com> <mailto:MicroClass%
40yahoogroups. com> ,
> >> "jimmyfuller0" <jimmyfuller0@>
> >> > wrote:
> >>> > >
> >>> > > Good afternoon everyone.
> >>> > >
> >>> > > I am in need of a standard blade jib for a Microsail as i
only
> > have
> >> > the
> >>> > > genoa with a poor sheeting angle. It will be for cruising
use
> >> > perhaps
> >>> > > some racing dacron will do must be in good condition and be
> >> > suitable
> >> > to
> >>> > > sheet to the standard cabin roof fittings with barber
haulers.
> >>> > >
> >>> > > Thanks in advance
> >>> > >
> >>> > > Jimmy.
> >>> > >
> >> >
> >> > Hello anyone out there, if there is anyone out there?
> >> >
> >> > Just to create some life on the UK forum you are all abviously
out
> >> > there
> >> > having too much fun!! I am writing to tell you i have managed
to
> > get
> >> > a
> >> > Narwhal blade jib off a Proto in Austria which works superbly
and
> > I
> >> > was
> >> > pleasantly surprised at how quick it was to arrive on my
doorstep.
> >> >
> >> > If anyone else is in need of a new jib or suit of sails the
same
> > chap
> >> > has a full suit of Doyle racing sails cut for a carbon mast
(500
> >> > Euros
> >> > +postage) and a superb radial cut Narwhal headsail (200 euros
> >> > +postage)! Email me and i will forward your details to the
seller
> > for
> >> > the details, alternatively go to www.microclass. org on the
forum
> >> > under
> >> > sales and contact Christian yourself. There is a possibility
they
> >> > might
> >> > be sold allready but its worth a go.
> >> >
> >> > Jimmy
> >> >
> >
> >
> >
>
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