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About johnstarks

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    hopefully usa and not China
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  1. johnstarks

    Route du Rhum 2018

    Gitana is sending it right now. 35kts. All the other ultimes are in the teens.
  2. johnstarks

    TF10 foiler... what could possibly go wrong!?.....

    No stability computer but it does have electric actuators on rudders and daggerboards. Pitch control is passive. Its similar to an A cat. The longer wheel base (distance between foil and rudder) helps slow down the motions. The bigger the boat the easier it gets.
  3. johnstarks


    The V1 and D1 both look like they go to the same outboard chainplate. That normally stops rotation. Must be just a drawing mistake
  4. johnstarks


    They say its a rotating rig but the rig plan shows something different. I'm i missing something?
  5. johnstarks

    US Watercraft goes to Auction!

    Who got the c&c 30 molds?
  6. johnstarks

    NYYC foiling tri

    TF10 launched more on DNA facebook
  7. johnstarks

    Poll: Next AC Boat

    Width gets you righting moment. Length between rudder and daggerboard helps with pitching moment. Then you need a certain amount of volume fwd for crashing
  8. johnstarks

    Poll: Next AC Boat

    I like foiling monohulls, they have there place reaching around the world not in a windward leeward course. I'm all for a more robust boat that can sail in waves and breeze. I'm not saying a catamaran is the only solution. I personally think a well thought out trimaran might be better. I just don't think foiling monohull concept works in this application.
  9. johnstarks

    Poll: Next AC Boat

    For a foiling boat you need two things, to be light weight and lots of righting moment prefferable at zero angle of heel, with a canting keel monohull you can have one or the other not both. Righting moment in simplest terms is weight x a distance. Try and make the math work. Yes you get additional righting moment from outboard foils but it's not enough for sustained flight. Ok also so let's pretend we can get this pig to fly. What now? Why do you think it's better than the current boats? As you get faster and faster the need for downwind sails disappears. Your always going upwind. Maybe they keep a tight luff gennaker for downwind but is that really better. Yes they put up a sail and down, but the age of bowman peeling kites is gone at these speeds. Peeling code zeros is not exciting. I think everyone is in agreememt what we want is more tactics and less people trying to be machines. The multihull concept as is, is not perfect. they need to get people in front of the technology not behind it.
  10. johnstarks

    Poll: Next AC Boat

    The idea 90ft foiling canting keel monohull in a windward leeward course is so flawed it's laughable. It's a fine concept for an ocean race but that's it. Foiling boats have to hit a certain boat speed (around 15kts) before they pop up. It is highly unlikely a monohull would be able to hit a take off speed consistently through the wind range. Dali style foils also pose a challenge for close combat sailing. Not sure if we are ready for Ben her on water. They knocked down that idea to have foils outside the max beam because of safety concerns in the last cup. Canting keels should be out because you would need an engine to move it with any speed. This is sailing not a motor sport. So your left with 2 options. Multihull or displacement monohull. The mono is further limited in size due to draft restrictions. For practical standpoint 3.5m draft is about maximum allowable draft for the majority harbors including Auckland. So based on the draft the largest monohull you would see would be minimaxi 65-70ft. While I would imagine it still would be a lot of fun to sail it would be eclipsed by any new event that stays at the leading edge.
  11. johnstarks

    Poll: Next AC Boat

    A foiling monohull is a nonstarter on a windward leeward course. To get enough righting moment you would need to fly the bulb which at this size (larger than 50') would require an engine or you would have to be cool with really slow tacks. I don't think we want to go down that road. The only monohull i could see foiling is some super sized moth like skiff, which would be cool but how is that different than multihulls 1) Stick with some kind multihull 2) only allow 2 people grinding 3) no hydraulics except for actuating the foils, or maybe just use electric actuators 4) open box rule on everything, 1 design has no place here 4) all soft sails, code zeros for prestart maneuvers and light air 5) get rid of the 10sec start, and reaching finish 6) longer course more than 1 jibe per leg 7) Be able to race in 2m swell, 30kts of breeze