The Revolution takes another step: the Mini POGO Flies!

Discussion in 'Sailboats' started by Doug Lord, Aug 12, 2018.

  1. myszek
    Joined: Jan 2013
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    Location: Lodz, Poland

    myszek Junior Member

    Both foilers seem not to fly. The wind is now about 16kn, last days it was 18-19kn, downwind. A hull-flying foiler should easily exceed 20 knots under such conditions, especially while sliding down the waves. Actually, they sail 9-10-11 knots, not faster than non-foiling Minis.
    Something does not work in current foiling Minis...

    regards

    krzys
     
  2. Dolfiman
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    Location: NICE (France)

    Dolfiman Senior Member

    You are right, it is a bit confusing to see that the 2 foilers Cerfrance and Arkema 3 are not able to show some extra speed in these most favorable conditions, even though they did well in the first leg up to Finistere Cap in light winds, then reaching, then upwind conditions in waves. May be pure beam reaching is better for them than the present rear wind with gybes, or that it is troublesome to have the auto pilot under full flying ? The race is not finished, the leader is on a counter gybe and will loss some of his advance, Axel Trehin in the west is well positioned to contest the lead, and light winds are expected at the end.
    Tracking : Cartographie | Mini-Transat La Boulangère https://www.minitransat.fr/suivi-de-la-course/cartographie
     
  3. Dolfiman
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    Dolfiman Senior Member

  4. Dolfiman
    Joined: Aug 2017
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    Location: NICE (France)

    Dolfiman Senior Member

  5. Dolfiman
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    Dolfiman Senior Member

    The finish is becoming rather uncertain between the 3 leaders due to patches of light winds at the arrival on Las Palmas : presently Team BFR/Francois Jambou is still leading with 13 NM to go, but with unconsistent speed between 0 to 2,5 Knots. Cerfrance / Tanguy Bouroullec is just 3,5 Nm behind and Project Rescue Ocean / Axel Trehin is 7,1 NM behind, both showing a bit more speed in average.
    Tracking is now updated every hour :
    Cartographie | Mini-Transat La Boulangère https://www.minitransat.fr/suivi-de-la-course/cartographie
     
  6. Dolfiman
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    Dolfiman Senior Member

  7. Dolfiman
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    Dolfiman Senior Member

    And finally, the 3rd won ! ..with a bit of chance as usual when there are erratic corridors of light winds. So Axel Trehin first, Francois Jambou 2nd at 6 minutes, Tanguy Bouroullec with the foiler 3rd at 24 minutes. In his interview, Tanguy said he tore his medium spi offshore Portugal, he quasi not flies due to a very bad sea state, but he used them (for assist I presume) to come back on Jambou. Anyway, he is very happy of the polyvalence of his boat in the very various conditions of this first leg, and confident for the second leg with trade winds.
    Interview Tanguy :Actualités | Mini-Transat La Boulangère https://www.minitransat.fr/actualites
    Tracking : Cartographie | Mini-Transat La Boulangère https://www.minitransat.fr/suivi-de-la-course/cartographie
     
  8. Dolfiman
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    Dolfiman Senior Member

    May be interesting to remind you on the smart foils system of Cerfrance imagined by G. Verdier : the 2 half spans of each foil are not symmetrical, one is with a straight tip, acting both for lift when horizontal or nearly and as a daggerboard when vertical or nearly, the other one is with a curved tip, acting mostly for lift when horizontal or nearly, otherwise out of water. The struts also act for the lateral resistance when the foils are horizontal. Two visible degrees of freedom : retractable and canting foils. About the rake ? (No info, I think not). These freedoms allow a continuous graduation of the foils use with a low drag objective in mind , for lateral resistance, and /or foil assistance and /or for full flying.
    IMG_0052.JPG IMG_0053.JPG IMG_0054.JPG
     
    Doug Lord likes this.
  9. Dolfiman
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    Dolfiman Senior Member

    ... actually the rake setting is also possible, so 3 degrees of freedom and a lot of ropes inside the boat (no hydraulic !), according to an older interview of Tanguy thanks to Voiles et Voiliers :
    "Voiles et voiliers : I imagine that the possibilities of adjustments are particularly numerous?
    Tanguy Bouroullec: I like to explain that this boat is in fact three-dimensional. First there is the angle of incidence of the foil. Then you can go in or out, then up or down. We can play on these three levels. I do not have all the keys yet but there is a multitude of possible settings. And it's really exciting to look for the best combinations, test what works, see what's not working."
    Source : https://voilesetvoiliers.ouest-fran...uroullec-cc656eba-b9e1-11e9-8417-a5bd6dde1321
     
  10. Dolfiman
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    Dolfiman Senior Member

  11. Dolfiman
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    Dolfiman Senior Member

    Cerfrance / Tanguy Bouroullec, after a good start in the second leg, faces technical problems with its fore stay and its bow sprit : he presently sails at just 6 knots to see how he can solve them :
    Everyone in the trade winds… or almost. Bouroullec in turmoil with technical issues. | Mini-Transat La Boulangère https://www.minitransat.fr/en/news/everyone-trade-winds-or-almost-bouroullec-turmoil-technical-issues
    The trade winds are presently light, Team BFR / Jambou (the scow ex Maximum winner last year) leads the fleet, the tracking :
    Cartography | Mini-Transat La Boulangère https://www.minitransat.fr/en/follow-race/cartography
     

  12. Dolfiman
    Joined: Aug 2017
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    Dolfiman Senior Member

    A frustrating second leg for Cerfrance / Tanguy Bouroullec, due to technical problems with its fore stay and its bow sprit, for which he should do a fragile preliminary repair : consequently, he could not sail on "full cylinders" and try to maintain an honorable 5th rank in the proto division. Yet, impressive leading and very probable victory of Francois Jambou with its scow Team BFR ( the ex Maximum already winner in 2017 with Ian Lipinsky). So, a bit frustrating to not be possible to compare the two at their best in this second leg as it was during the first leg.
    Tracking : Cartographie | Mini-Transat La Boulangère https://www.minitransat.fr/suivi-de-la-course/cartographie
     
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