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svendson

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About svendson

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  1. I very much appreciate Paul and Rapido engaging here and the openness in discussing a range of questions and issues related to their boats. I particularly look forward to hearing more about the 40 as the first boats launch and get some miles behind them, assuming Paul manages to hang in here that long. Could there be even more transparency? Of course, but this is already pretty groundbreaking in the yachting world. The number of companies worldwide willing to do this is very low, and where I can I try to reward such practice with my business and/or by referring friends. There is no s
  2. Very cool looking boat. I just can't help thinking it would have been a lot more appealing for anyone without a big bucks sponsorship if they had just kept the water ballast instead of the foils... or gone with a fully retracting DSS type foil assist...
  3. How does a trimaran resist capsize from the pressure in the sails? By pushing the leeward ama down into the water. The amas have a much lower heave response amplitude than the main hull, so any action from beam seas is going to tend to throw the boat onto the leeward ama. So yes, the float rudders probably come out of the waves sometimes. But with far less regularity and far less severity than the main hull.
  4. I have the F-22 rudder. Makes no discernable difference to the situation I outlined.
  5. I only have a little F-24 and I sometimes encounter a swell wavelength and size that leaves me with very little mainhull/rudder in the water, even when reefed fairly conservatively. This usually starts to occur when the sea state is getting to the point where I am steering quite aggressively around the worst waves. If I get a set of these inconvenient waves, the 6-8 inches of rudder left in the water after the first one is inadequate to turn the boat in time for the next wave and the boat ends up getting a pretty hard smack. It can handle it, but I wish I had the control to avoid more of those
  6. Umm, Sodebo cut both floats off and moved them 80cm forward.
  7. There are some properties of high prismatic hulls, regardless of application, that are fairly well known and accepted. They include: -Lower Cr (wave making drag) at high Froude numbers (high speeds). -Increased longitudinal metacentric height. This mean better longitudinal stability at small pitch angles. As long as the prismatic stays reasonably high (ie one end or the other doesn't get submerged or lifted right out), this is true for larger pitch angles as well. Importantly, the area under the longitudinal stability curve goes up, meaning more energy is required to pitchpole. -Increase
  8. I got in touch with the Multihulls direct guys about the Farrier options they have - extremely fast, clear, and frank replies every time. Pricing came out pretty much in line with what I estimated self building to cost. I figure that makes sense. They are in a very low cost country, buying in bulk, and I am in a very high cost one, buying at retail. Everything I have learned from previous builders also indicates the you very rarely save much money in the end, you just spread the payment period out over more time. Personally, I suffer from an odd dementia where I would like to build a boat
  9. dingleberries

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