Recent Content by drshaddock

  1. drshaddock
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    Why are my rudders so ineffective ? (pwc converted to propeller)

    Just to help get some terminology straight--because your new eBay rudder is an airfoil of sorts, it will have 'lift'--generated by differential...
    Post by: drshaddock, Feb 22, 2008 in forum: Boat Design
  2. drshaddock
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    The roll acceleration: What´s the best for crossing oceans?

    Your calculations are interesting work. I notice that the Catalina 27 row has an inconsistent formula--if you copy the formula from the row above...
    Post by: drshaddock, Feb 22, 2008 in forum: Stability
  3. drshaddock
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    The roll acceleration: What´s the best for crossing oceans?

    Teddy, it's hard to imagine any boat being comfortable when waves are breaking over the bow or stern. I'm only trying to say that if a boat has a...
    Post by: drshaddock, Feb 22, 2008 in forum: Stability
  4. drshaddock
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    A name for this on-board nav/monitoring system

    Free? I looked at that link, and Winchart Nexus does indeed look pretty slick. And after all the recent buzz about Furuno Net3D I'd really...
    Post by: drshaddock, Feb 20, 2008 in forum: OnBoard Electronics & Controls
  5. drshaddock
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    Why are my rudders so ineffective ? (pwc converted to propeller)

    rudder improvement I have a consideration for you--if you're using the water inlet and out for engine or exhaust cooling, and you're using a...
    Post by: drshaddock, Feb 20, 2008 in forum: Boat Design
  6. drshaddock
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    Discussion- Multi-purpose Onboard Computers

    One more note I forgot, to you guys who are looking to incorporate CANbus communication into OpenPilot--the www.canusb.com link provided by Tim...
    Post by: drshaddock, Feb 20, 2008 in forum: OnBoard Electronics & Controls
  7. drshaddock
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    Discussion- Multi-purpose Onboard Computers

    I love the simplicity of using a USB dongle to bring in CANbus info, especially if we're just tapping into one point in an existing CANbus...
    Post by: drshaddock, Feb 19, 2008 in forum: OnBoard Electronics & Controls
  8. drshaddock
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    Adding Bulkheads 'n stuff to Freeship model

    Thanks to both of you guys--saved me days of work! What about finding the intersections of layers? It seems to me that if you inserting a...
    Post by: drshaddock, Feb 19, 2008 in forum: Software
  9. drshaddock
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    The roll acceleration: What´s the best for crossing oceans?

    I guess it depends on how you work with overhangs in the formula. Let's say you set up a hypothetical bluewater sailboat--say 40 ft LOA, 30 ft...
    Post by: drshaddock, Feb 17, 2008 in forum: Stability
  10. drshaddock
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    Discussion- Multi-purpose Onboard Computers

    The tutorial that Billy submitted is a good overview, but of interest to our group is a piece of missing information in the list of...
    Post by: drshaddock, Feb 17, 2008 in forum: OnBoard Electronics & Controls
  11. drshaddock
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    The roll acceleration: What´s the best for crossing oceans?

    Try this calculator I put together a little Excel spreadsheet to play with the MCR as well as the CSF (and threw in the D/L ratio while I was...
    Post by: drshaddock, Feb 17, 2008 in forum: Stability
  12. drshaddock
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    Vanishing Angle for Bulk Carrier

    That was way too simplified--and I was wrong If you read through my simplified discussion from my last post, it was over-simplified and missed a...
    Post by: drshaddock, Feb 14, 2008 in forum: Stability
  13. drshaddock
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    WAGO vrs. Conventional

    More info needed By WAGO, do you mean wiring your panel using WAGO-brand terminal strips rather than bus bar with screw terminals? (thought...
    Post by: drshaddock, Feb 13, 2008 in forum: OnBoard Electronics & Controls
  14. drshaddock
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    Vanishing Angle for Bulk Carrier

    The correct procedure depends on the governing body that's going to decide whether the boat is suitable. If the ship is built, here's an example...
    Post by: drshaddock, Feb 13, 2008 in forum: Stability
  15. drshaddock
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    Vanishing Angle for Bulk Carrier

    Zaim, I'm curious what the freeboard is on this bulk carrier. And also, are you including cargo in your calculations? The angle seems quite low...
    Post by: drshaddock, Feb 12, 2008 in forum: Stability