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  1. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    The big guns in science education finally get involved. https://twitter.com/veritasium/status/1403130178197278720?s=20
    Post by: ThinAirDesigns, Jun 12, 2021 in forum: Propulsion
  2. ThinAirDesigns
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    'Sailing'?? Directly to Windward

    Cool, Thanks. JB
    Post by: ThinAirDesigns, Jul 31, 2012 in forum: Boat Design
  3. ThinAirDesigns
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    'Sailing'?? Directly to Windward

    Thanks Jeremy -- I am familiar with that one, but from his description was not sure (and am still not sure) if that is the boat he is talking...
    Post by: ThinAirDesigns, Jul 31, 2012 in forum: Boat Design
  4. ThinAirDesigns
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    'Sailing'?? Directly to Windward

    I would love to hear just a brief description of the sails you were using on these boats in the '80s that allowed you to progress straight into...
    Post by: ThinAirDesigns, Jul 31, 2012 in forum: Boat Design
  5. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Yep. JB
    Post by: ThinAirDesigns, Sep 8, 2010 in forum: Propulsion
  6. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Nalsa rules require the wind to be measured at hub height. As you note from your link, this location places the measurement at a point above the...
    Post by: ThinAirDesigns, Sep 7, 2010 in forum: Propulsion
  7. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Thanks, that is correct. We have a 'tight side' and a 'loose side' on our chain drive. The slack takeup device is of course on the loose side....
    Post by: ThinAirDesigns, Sep 7, 2010 in forum: Propulsion
  8. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Zawy, I couldn't find the answer to the above question in your last couple of posts. If your still considering the question, that's cool --...
    Post by: ThinAirDesigns, Sep 7, 2010 in forum: Propulsion
  9. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Zawy, another quick question so I can make sure I totally understand your position: When comparing the treadmill test and the tests in the...
    Post by: ThinAirDesigns, Sep 5, 2010 in forum: Propulsion
  10. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Ok, we agree. I likely misunderstood his question and thus your answer. My bad. It's a question I can't answer as we haven't tested down in...
    Post by: ThinAirDesigns, Sep 5, 2010 in forum: Propulsion
  11. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    I don't believe that answers the question he was asking, but perhaps I misunderstood his question. As clarification, I'll ask a related question:...
    Post by: ThinAirDesigns, Sep 5, 2010 in forum: Propulsion
  12. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    zawy -- did I miss the answer to this question? JB
    Post by: ThinAirDesigns, Sep 5, 2010 in forum: Propulsion
  13. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Replace the 72% efficiency of your above listed power transmission method with one that is well in to the 90s% and see what happens with your...
    Post by: ThinAirDesigns, Sep 4, 2010 in forum: Propulsion
  14. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    You're arguing with Galileo, Newton and Einstein. We decided not to cover their work on our site -- it's old news. High school physics text...
    Post by: ThinAirDesigns, Sep 4, 2010 in forum: Propulsion
  15. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    Again, no. JB
    Post by: ThinAirDesigns, Sep 4, 2010 in forum: Propulsion
  16. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    No. JB
    Post by: ThinAirDesigns, Sep 4, 2010 in forum: Propulsion
  17. ThinAirDesigns
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    Directly against the wind?

    Windmaster ... get a grip. I've hijacked nothing and didn't even bring it up first -- I have responded only to someone who made a false...
    Post by: ThinAirDesigns, Aug 3, 2010 in forum: Sailboats
  18. ThinAirDesigns
    Post

    The Wind Powered Sail-less Boat

    I have no control of the article, but Jack is featured prominently on the faster than the wind website -- check out the very third post:...
    Post by: ThinAirDesigns, Aug 3, 2010 in forum: Boat Design
  19. ThinAirDesigns
    Post

    DDWFTTW - Directly Downwind Faster Than The Wind

    I have no control of the article, but Jack is featured prominently on the faster than the wind website -- check out the very third post:...
    Post by: ThinAirDesigns, Aug 3, 2010 in forum: Propulsion
  20. ThinAirDesigns
    Post

    Directly against the wind?

    Wouldn't surprise me -- Davinci was a bada** who had drawings of a lot of cool stuff. Not sure how serious you are above, but for sure our...
    Post by: ThinAirDesigns, Aug 3, 2010 in forum: Sailboats
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