Gennaker yes, and it's allowed on Cruisers and Racers but with the same sail area as a spinnaker, 19.60 sq.m.
Principle, average SL unchanged, let's say 6.40, may be SLu=7.30 and SLe=5.50 or 7.20/5.60
4*SMG+SF unchanged, example 4*3.73+3.45 = 18.37
You want SMG=90% SF% then 4*0.9*SF + SF =4.6*SF = 18.37, SF = 3.99, SMG = (18.37-3.99)/4 = 3.845 bad luck, let's round to the most convenient centimeter 3.85 then SF=18.37-4*3.85 = 3.97
Further what bowsprit extension? 2/3 SF from mast = 2.646
In addition, bowsprit must be retracted within hull template (means above deck) when not in use.
Works well too, but for cruising only, this boat is admitted in national regattas in Germany with penalty on yardstick.
----- Original Message -----
Sent: Wednesday, November 19, 2008 11:21 PM
Subject: [MicroClass] Re: Kelt 550
Thanks for the info Phil. Now I know where I am!!
I hope to get used to the boat over the winter. There is no spinnaker
gear with the boat so that may have to come at a later stage. I know
the design is quite old now but have any suggestions been made to
allow a gennaker into the class in align with modern sportsboats?
Regards
Colin
--- In MicroClass@yahoogroups.com, "Philippe DE TROY" <philippe@...>
wrote:
>
> No problem, the Kelt was built on the genuine Class Rules of 1977.
> Designer Giles Ollier
> Available as fixed keel (Q) or lift keel (QR)
> Performance is assessed by the French Federation as equal to the
First 18, and the First 18 QR has a PN 1111, just slower than a Swift
18 (1102) and the First 18 and Kelt 550 are clearly approximately 1
minute slower. These handicaps rely on speed statistics and may also
reflect the average level of the crews...
>
> There was god information (in French) on a Swiss Web site La Voile-
Les Voiliers, temporary unavailable, also a page (in French too) on
the Go-Neptune Web site (also in French) www.go-neptune.org/index.php?
option=com_content&view=article&catid=46:croiseurs&id=72:kelt-
550&Itemid=70
>
> On Micro Class.org, see the standard sail dimensions on
www.microclass.org/page.php?page=document5
> These dimensions are still "old style" mainsails, the Micro Class
accepts some "refreshed" style with larger mainsail head (batten
accepted instead of board), but it implies a device to pass the
backstay when gybing.
> The headsail is also outdated, most of the Micros are using
standard jibs 6.50 by 2.00 metres, just check if there is room on the
forestay for such a long luff, then as the standard mainsail area is
10.94 sq.m., improved with larger mainsail like First 18 or Jouet 550
11.20 sq.m., adjust the heasail area to 7.56 or 7.30 sq.m. (for luff
length 6.50, perpendicular from clew point 2.32 or 2.24)
> On the other side, if the forestay attachment is as low as the
headsail luff length lets fear, the spinnaker is incredibly high and
narrow (and slightly undersized for the present Class Rules), the
standards in the Class are leeches length 6.40, mid width 3,73 and
foot length 3,47 (like Go-Neptune). I used a 6.55 high spinnaker on
my standard Shanta Micro Proto, the kite was not setting properly,
now I changed to 6.40 and things are much better, the forestay length
is 6.90
>
> Phil
>
>
> ----- Original Message -----
> From: katmancol
> To: MicroClass@yahoogroups.com
> Sent: Tuesday, November 18, 2008 5:08 PM
> Subject: [MicroClass] Kelt 550
>
>
> Hi All
> I've just bought a 1981 Kelt K18/550 which the owner told me was
a
> Micro Cup design. I would like to know if the boat fits this
Micro
> class and if anyone can give me any more information on the Kelt
I'd
> appreciate it.
> Thanks
> Colin
>
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