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Ilvy racing

  • 06 Sep 2025 18:29
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    Reply # 13539566 on 13499881
    Anonymous member

    Dankeschön! Thank you! Mille Grazie!

    :-)
  • 06 Sep 2025 10:02
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    Reply # 13539492 on 13499881
    Anonymous member

    In 3 languages Paul:

    Ich drücke dir ganz fest die Daumen!

    Wish you all the best!

    Buon vento…
  • 05 Sep 2025 09:14
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    Reply # 13539103 on 13499881
    Anonymous member

    Good morning!

    Ilvy is going to take part in the Silverrudder Regatta 2025, a singlehanded nonstop race round the Danish Fyn. It is about 134 nm and I expect a duration for Ilvy of 30-40 hours. Start is on 19th Septembre, 1000.

    Yacht Article Silverrudder 2025

    Every boat gets a GPS tracker, so whoever is interested will be able to follow up live. (I'll post the link here, as soon as available).


    Wish me luck! :)

    Paul
  • 04 Jun 2025 16:40
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    Reply # 13506661 on 13500394
    Anonymous member (Administrator)
    Anonymous wrote:

    You remember that tufting experiment on Ilvy last summer? Those telltales, spread all over the sail, definitely helped a lot - though I could only see the lee side telltales of the sun was on the right side. Sewing in some telltale windows would help here, but then we are talking about some fancy-schmancy regatta stuff :-D


    Bonjour

    You don't need to sow the telltale windows. It would be easy to glue them with some appropriate glue. The efforts in the material is very small.

    I used some 25mm wide 3M 927 glue film to assemble Mingming's wing rear part. I used Tyvex and it's not a material that is known for it's gluable performance. 

    I tested with a 10 cm join and it hold 60 kg before it broke. It was not the glue that failed but the surface of the Tyvex.

    Eric
  • 04 Jun 2025 16:27
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    Reply # 13506650 on 13502514
    Anonymous member (Administrator)
    Anonymous wrote:Result: 5th place, out of 5 in Ilvy's group. Last, again. Quite frustrating. The folkeboats simply pointed a bit higher while being faster - and I surely need to train more on my upwind junk rig helming. I'm still pinching too much (didn't fasten the luff telltales yet).

    Bonjour

    In such conditions, only the best racers are racing. 

    The important thing is not to be first or last but not to be overwelmed by all the others and ending half an hour after.

    Eric
  • 31 May 2025 12:55
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    Reply # 13505154 on 13499881
    Anonymous member

    Arne

    (..about to go sailing on a trimaran...)


    ...about to be jealous! 

    Paul
  • 31 May 2025 12:38
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    Reply # 13505153 on 13499881
    Anonymous member (Administrator)

    Paul,
    I bet you have access to the race results with the sailing time for all the boats in you handicap group. From there it is doable to find the average of their sailing time. This would let you calculate the needed speed increase you need for Ilvy to end up in the middle of the group.

    Cheers,
    Arne

    (..about to go sailing on a trimaran...)

    (Edit: Oooh, we did over 7 knots much of the time and touched 8,2kts  -  in light winds...)


    Last modified: 31 May 2025 16:46 | Anonymous member (Administrator)
  • 29 May 2025 10:01
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    Reply # 13504323 on 13499881
    Anonymous member

    Arne,

    You are right, Ilvy's mast is a good cruising mast! That's what I wanted and what I designed it to be. I'm glad it worked out so well. Nevertheless, I simply find it interesting to understand the phaenomena behind her performance - which doesn't necessarily mean I want to change the rig ;-)

    I really pushed Ilvy's rig to some limits, at least to the limits which are available to put her to. Two weeks ago, she hit 8.1 kn on a beam reach, that's about 2 kn above hull speed. It felt like she really wanted to take off and glide away, if it was'nt for her weight and round belly. The battens were bending a bit, but nothing to be afraid of. The mast was bending a bit, but still within what I consider safe. Of course that was flat sea conditions - I do not claim to have any serious offshore experience, and simply am not able to test her in those conditions.
  • 26 May 2025 09:23
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    Reply # 13503227 on 13499881
    Anonymous member (Administrator)

    Paul,

    My guess is that the mast is a little bigger than needed, both taller, thicker and heavier than the mast of my Ingeborg.

    • ·         Its length is 11m versus 9.7 on Ingeborg
    • ·         It is 170mm thick versus 150mm on my boat. Higher windage of the naked mast.
    • ·         The way the top section is shaped, makes the walls thicker up there and this moves the CG of the mast upwards.
    • ·         Its weight is around 60kg versus around 53kg on Ingeborg, even though Ilvy weighs only around 2000kg ,while Ingeborg weighs 2150kg.
    • ·         The sail generally rides higher up, creating more heeling moment than on my boat.

    These factors are not enough to kill the performance of Ilvy, but for racing, their combined impact may well reduce her performance with 1-2% (..what do I know...), and that is noticeable when racing.

    I suggest you just accept this as it is, calling that mast a cruising mast.

    Enjoy the season!

    Arne


    Last modified: 27 May 2025 09:18 | Anonymous member (Administrator)
  • 25 May 2025 19:12
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    Reply # 13503151 on 13499881
    Anonymous member

    Arne,

    just in short: the wednesday regatta in the Kiel fjord is a true round cours:


    Mast is about 11 m long (overall), with 177 mm / 4 mm at the base, only starting to get conical above 4 m length from the bottom. Wall thickness at the top is more like 7 mm, I guess due to how Nedal manufactures those poles. Weight: about 60 kg.

    Folkeboats: Yes, they are fast ones, especially when its blowing. However, with her original, worn BM rig Ilvy was very slightly outrunning folkeboats upwind in the few wednesday regattas I sailed her before the conversion, while slowly been overtaken downwind (due to the long boom/huge main of a folkeboat and the small main of a Maxi 77). That gives a clue that my JR on Ilvy is right now a little bit less able upwind as her original BM rig. 

    Cheers

    Paul