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Showing content with the highest reputation since 03/01/2010 in Blog Comments

  1. The first improvement I’d work on making after replicating the existing system (i.e. sonar sensor for current ride height and servo for actuation only) is improving the algorithm. Specifically, the gearing on the UFO is setup to handle waves as well as possible at a slight top speed cost, but with the electronic system it’s easy to automatically adjust gearing. What you want to try is taking lift off the flap faster when ride height gets too high, adding it back faster when boat gets near/in the water and keeping the flap close to neutral at a constant gearing at your desired ride height. some
    2 points
  2. Not sure I understand the wand issue completely. That said, it is very often true that the sensor and servo functions do not need to directly address (code) the physics to achieve a reliable servo action. You can characterize the wand with some regression on the likely variables and use that to generate the input to the servo function. Also, be vary careful screwing with the sensor data in an (often) misguided attempt to filter the data. All too often we see attempts to brutally clip (supposedly) outlier data or shortcut coded filters that generate too much noise. Do the right thing from
    1 point
  3. Just so I follow your thinking on the wand, are you imagining a system that would raise and lower the wand electromechanically? It would additionally adjust main foil rake? Both of those sound like a lot of custom mechanical parts (probably my area of least experience). On the servo / actuation question, my first thought was to actuate the flap mechanism by using a piece of wand (1 foot length or so) and link the servo to this 'stub wand'. Then actuate the main foil flap using the same mechanics already in the boat. I think this would be simple and totally removable. It could be mad
    1 point
  4. I have been thinking about this for a while as well. One of the areas where I have evolved a bit is that I worry about a servo and batteries powerful enough to drive the flap mechanism. Because of that, in my mind practical uses of #1 should be later in the roadmap. It makes sense to start with small simple servo mechanisms that that engage/disengage the wand (your #2) and can control foil rake. A simple mechanism to control wand length (manually or electronically) can also be a winner with modest effort and complexity. I would set all these things up, and provide simple manual cont
    1 point
  5. Just watch some videos on youtube of people sailing the type of boats you will be on.
    1 point
  6. Where's the microphone on this damn thing?
    1 point
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    -1 points

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